Fungi Species List

	Calbovista subsculpta
	Common Name: Puffball

	Callistosporium luteo-olivaceum
	California Fungi—Callistosporium luteo-olivaceum

	Calocera cornea
	Sporocarp Fruiting body erect, slender, cylindrical strands, usually unbranched, 1.0-1.5 cm tall, approximately 1 mm thick at the base, tapered to a narrow, obtuse tip, single or several fused to a common base; surface more or less glabrous, viscid when moist, yellow to yellow-orange; context stiff-gelatinous; odor and taste mild.

Calocybe carnea

Pileus
Cap 1.5-3.0 cm broad, convex, becoming plano-convex, the disc occasionally depressed in age; margin when young, incurved, then decurved to plane, frequently wavy; surface when fresh, pinkish to vinaceous-brown, a whitish bloom sometimes evident near the margin, the cap typically glabrous at maturity, often fading to a watery tan-brown; context thin, firm, translucent pinkish-tan, unchanging; odor not distinctive; taste somewhat pungent, disagreeable.

Calocybe onychina

Pileus
Cap 3-5 cm broad, convex, expanding to plano-convex, with or without a low umbo; margin incurved, then decurved, plane to slightly upturned, frequently wavy; surface lavender-purple to vinaceous-purple; when fresh, minutely tomentose (use hand lens), in age blotched shades of purple and brown, eventually entirely brown; context up to 1.0 cm thick, soft, cream-colored, unchanging or darkening slightly; odor mild to slightly farinaceous; taste latently farinaceous to bitter.

	Caloscypha fulgens
	Sporocarp Fruiting body 0.5-3.5 (5.0) cm broad, cupulate, elongate, to variously lobed, sometimes nearly flat in age, sessile to short stipitate; margin incurved, then straight, even to eroded; exterior surface dull yellow to yellowish-orange, bruising bluish-green to olive, especially near the margin; hymenial surface yellow-orange to orange, glabrous.

	Calvatia booniana
	Common Name: Western Giant Puffball

	Calvatia cyathiformis f. fragilis
	Common Name: purple-spored puffball

	Calvatia fumosa: Handkea fumosa
	Synonyms: Calvatia fumosa Zeller; Gastropila fumosa (Zeller) P. Ponce de León

Calvatia pachyderma

Sporocarp
Fruiting body subglobose, cushion-shaped, to turbinate, 6.0-11.0 cm tall, 7.0-13.0 cm broad, abruptly tapered towards the base, sometimes with a root-like attachment to the substrate; exoperidium persistent, thin, less than 1.0 mm thick, glabrous, pallid to pale greyish-tan, basal area dull purple-brown in age; endoperidium 2.0-3.0 mm thick, punky, brittle; gleba cream-colored, then ochre, eventually dull yellowish-brown, occasionally tinged olive, powdery; subgleba and sterile base absent; fruiting body opening by splits or polygonal fractures; odor of mushrooms; taste untried.

	Calvatia sculpta
	Common Name: Sculpted puffball Synonym: Lycoperdon sculptum Harkness

	Calvatia subcretacea: Handkea subcretacea
	Synonyms: Calvatia subcretacea Zeller; Gastropila subcretacea (Zeller) P. Ponce de León

	Calvatia utriformis: Handkea utriformis
	Common Name: Puffball Synonyms: Calvatia bovista (Pers.) Kambly & Lee; Calvatia utriformis (Bull.: Pers.) Jaap

	Camarophyllus pratensis
	Pileus Fruiting body 3-7 cm broad, convex, expanding to nearly plane, slightly umbonate; margin entire or wavy; surface moist, smooth, pale orange to apricot-orange, sometimes spotted darker orange, fading when dry to pale-peach and becoming slightly fibrillose; flesh thick at the disc, otherwise thin, white, unchanging; odor mild, soap-like in one form; taste mild.

	Camarophyllus russocoriaceus
	Pileus Cap 1.5 -3.5 cm broad, convex, the margin slightly undulate in age, faintly striate; surface moist, smooth, hygrophanous, ivory to pallid, fading from the disc toward the margin, the latter often slightly darker; flesh thin, pallid, unchanging; odor of cedar; taste, mild.

Candy Cap: Lactarius rubidus

Pileus
Cap 1.5-4.5 cm broad, convex with a slightly inrolled margin when young, becoming nearly plane, occasionally with a small umbo but more typically with a depressed disc, the margin wavy and sometimes upturned in age; surface smooth to faintly furrowed, rusty-brown, azonate; flesh thin, brittle, pale buff-brown, unchanging, bleeding a watery latex when cut; taste mild; odor faintly of brown sugar or butterscotch.

Cannon Fungus: Sphaerobolus stellatus

Sporocarp
Fruiting body globose, in age, cup-shaped, 2-3 mm broad, usually erumpent from a lignicolous substrate, occasionally developing from a pallid, surface mycelial layer; outer cup surface (peridial layer) cream-buff to ochraceous, matted tomentose, pliant, soon splitting, forming 5-7 short lobes; inner-most peridial layer translucent, tinged yellow, surrounding a glebal mass (peridiole), at maturity suddenly everting, ejecting a dark-brown, sticky peridiole; remnants of the inner peridial layer, inflated, balloon-like, briefly remaining attached to the lobe tips; in age the cups whitish and empty.

	Cantharellus californicus
	Common Name: chanterelle

	Cantharellus cibarius
	Pileus Cap 3-11 cm broad, peg to vase-shaped, the disc frequently depressed but not funnelform; margin incurved, wavy, in age decurved, plane, to upturned; surface smooth or with appressed hairs, dry, yellow to golden-yellow, fading in age; flesh yellowish, thick, firm; odor faintly fruity, taste mild.

	Cantharellus formosus
	Common Name: Chanterelle

	Cantharellus subalbidus
	Pileus Cap 5-10 cm broad, convex, margin incurved, expanding to nearly plane or depressed at the disc with an uplifted, wavy to irregular margin; surface smooth to appressed squamulose, dry, whitish to cream, bruising yellowish-brown to tawny-brown; flesh thick, whitish, firm, becoming ochraceous to tawny where exposed. Odor and taste mild.

	Cantharellus tubaeformis: Craterellus tubaeformis
	Pileus Cap 2-4 cm broad, at first convex, then depressed, sometimes hollow in the center, trumpet-shaped; margin incurved, wavy; surface dry, brown to yellowish-brown, with fine dark scales; flesh thin, yellowish-brown; odor and taste mild.

	Cantharocybe gruberi
	Synonym: Clitocybe guberi A. H. Smith

	Catathelasma imperiale
	Habitat Solitary to gregarious under conifers in northern North America and Europe. In California it is known from Humboldt, Del Norte, and Mendocino counties.

	Catathelasma ventricosum
	Synonym: Lentinus ventricosus Peck

	Cauliflower mushroom: Sparassis crispa
	Sporocarp Fruiting body 20 cm broad, 40 cm tall, sometimes larger, a rounded mass of flattened, wavy, leaf-like branches, white to pale yellow; branch edges discoloring brown in age; arising from a large root-like sterile base, the upper portion appearing chambered when sectioned, solid below; flesh white. Hymenium on the flattened surfaces of the fruiting body. Odor fragrant, somewhat spicy.

	Caulorhiza umbonata
	Pileus Cap 5-15 cm broad, conic with an incurved margin and pointed umbo, becoming planoconvex, the disc then sometimes shallowly depressed but still umbonate; in age the margin wavy, fluted to upturned; surface moist, hygrophanous, smooth, ochraceous-brown, buff-brown to dingy tawny-brown, fading overall at maturity; flesh thin, pallid to cream; odor and taste mild.

	Ceriporia spissa
	California Fungi—Ceriporia spissa

	Chaetothiersia vernalis
	Habitat Gregarious to caespitose on decaying coniferous wood and bark and on woody debris in soil; Sierra Nevada mountains, spring.

Chalciporus piperatoides

Pileus
Cap 2.5-6.0 cm broad, convex, broadly convex in age; margin decurved, becoming nearly plane at maturity; surface sticky when moist, otherwise dry, matted-tomentose, chamois-like, areolate in dry weather; color variable: ochre, rusty-brown, tan to cinnamon-brown, often tinged vinaceous; context up to 1.5 cm thick, pale tawny-buff, soft, bluing erratically; odor: fruity-aromatic; taste: peppery.

	Chalciporus piperatus
	Common Name: Peppery Bolete Synonym: Boletus piperatus Fries

	Chamonixia ambigua
	Habitat Solitary to scattered to gregarious; hypogeous under live oak.; coastal California; uncommon.

	Champignon: Agaricus campestris
	Pileus Cap 5-10 cm broad, convex, broadly convex in age, often with a low umbo; margin incurved, decurved to occasionally upturned in senescent specimens; surface dry, smooth, fibrillose to finely scaled in dry weather; color: white to ashy-grey; context white, thick, unchanging when bruised or in KOH; odor and taste mild.

Cheilymenia fimicola

Sporocarp
Apothecia sessile, cylindrical to cushion-shaped, becoming shallowly cupulate to saucer-shaped, 1.0-4.0 (5) mm broad; margin upturned, even to wavy, with pale-tan, bristle-like hairs; hymenium red-orange to yellowish-orange, glabrous, plane to concave; exterior surface lighter than the disc, with scattered, pallid, stiff hairs; context fleshy, thin, orange; odor and taste not investigated.

	Chlorociboria aeruginascens
	Sporocarp Fruiting bodies aerugineus-green (blue-green); apotheca cup to discoid shaped, 3-10mm broad at maturity; stipitate to sub-stipitate with the stipe typically laterally attached.

	Chlorociboria aeruginosa
	Habitat Scattered to gregarious on wood; the wood usually stained blue-green by the mycelium of the fungus.

	Chicken Lips: Leotia viscosa
	Pileus Cap 1.5-3.0 cm broad, hemispheric to convex, the disc occasionally depressed; margin inrolled, wavy, sometimes lobed; surface viscid when moist, more or less glabrous, dull olive-green; lower surface pallid; flesh gelatinous.

	Chlorophyllum brunneum
	Pileus Cap 7-20 cm broad, subglobose to pulvinate, becoming convex to nearly plane in age; surface dry, brown, smooth, breaking up into coarse, brown, concentrically arranged scales except for the disc where the cuticle remains intact; margin inrolled at first, frequently appendiculate; flesh thick, white, discoloring yellow-orange, darkening to reddish-brown.

Chlorophyllum molybdites

Pileus
Cap 5.0-15.0 (20) cm broad, paraboloid, to obtuse-conic when young, expanding to plano-convex, the disc slightly raised or depressed at maturity; margin shaggy from veil fragments in youth, incurved, becoming decurved, in age plane to elevated, occasionally wavy; surface of immature caps, brown, sometimes with vinaceous tints, glabrous to slightly matted-tomentose; with cap expansion the cuticle cracking, forming coarse, brown concentrically arranged, these, smaller and sparser towards the margin, background color white to buff-brown; context white, firm in youth, soft in age, sporadically carrot-orange to vinaceous when injured; odor and taste not distinctive.

	Chloroscypha alutipes: Kriegeria alutipes
	Synonym: Peziza alutipes W. Phillips; Chloroscypha alutipes (W. Phillips) Dennis

Chromosera cyanophylla

Pileus
Cap 1.0-2.5 cm broad at maturity, at first convex, becoming plano-convex, in age the disc broadly flattened, depressed or umbillicate; margin translucent-striate to near the disc, incurved in youth, then decurved, occasionally plane at maturity; surface glabrous, viscid, lavender to lilac, soon fading to yellowish or yellowish-tan; context thin, < 1 mm, pallid, unchanging; odor indistinct; taste mild.

Chroogomphus ochraceus

Pileus
Cap 2.5-9.0 cm broad, convex in youth, with or without a low umbo, nearly plane to centrally depressed in age; margin at first incurved, then decurved, even to wavy, occasionally upturned; surface viscid when moist, glabrous, when young dark-greyish-brown to vinaceous-grey over an ochraceous ground color, becoming vinaceous overall in age; context pale apricot-orange, soft, moderately thick at the disc, rapidly thinning toward the margin, unchanging when cut or bruised, vinaceous with 3% KOH, odor not distinctive, taste mild.

	Chroogomphus vinicolor
	Pileus Cap 3.0-9.0 cm broad, convex, broadly so in age, occasionally with a pointed umbo; margin inrolled, then incurved, decurved at maturity; surface viscid when moist, drying shiny, glabrous to to appressed fibrillose, mahogany brown to reddish-brown; flesh thick, orange to salmon, unchanging, vinaceous with 3% KOH; odor not distinctive, taste mild.

	Chroogomphus tomentosus
	California Fungi—Chroogomphus tomentosus

	Chrysomphalina aurantiaca
	Synonyms: Omphalia aurantiaca Peck; Omphalina luteicolor Murrill; Clitocybe luteicolor (Murrill) Bigelow & Smith

	Chrysomphalina chrysophylla
	Pileus Pileus 1-5 cm broad, convex, broadly so in age, often with a depressed disc; margin incurved at first, becoming decurved, occasionally wavy; surface innately fibrillose to finely scaled, greyish-brown, light-brown to apricot-brown over a dull yellowish ground color, palest at the margin, fading overall in age; flesh thin, pale yellow-orange, unchanging; odor and taste mild.

	Ciboria rufofusca
	California Fungi—Ciboria rufofusca

	Clathrus archeri
	Common Name: Octopus stinkhorn

Clathrus ruber

Sporocarp
Fruiting body 4-7 cm broad, rounded to pulvinate; peridium thin, white, irregularly bumpy over an inner gelatinous layer; fruiting body expanding and rupturing to reveal a pale orange to reddish-orange, hollow, fragile, lattice-work structure, the inner surface lined with a sticky, fetid-odored gleba; rhizomorphs (thickened mycelium) are characteristically found at the base of fruiting bodies.

	Clavaria vermicularis
	Sporocarp Fruiting body 3-9 cm tall, 2-4 mm thick, simple, branches rounded to flattened in cross-section, often curved, tapering to a blunt or pointed tip; surface smooth, white, becoming yellowish in age especially at the tips; flesh white, fragile.

	Clavariadelphus caespitosus
	California Fungi—Clavariadelphus caespitosus

	Clavariadelphus occidentalis
	Sporocarp Cap 7-17 cm tall, 1-5 cm thick, club-shaped, rounded at apex, tapering to the base, usually unbranched, surface smooth but becoming wrinkled or grooved at maturity; color yellowish at apex, yellowish-brown to pinkish brown overall, base pallid; flesh white staining reddish-brown when cut; taste mild to bitter.

Clavariadelphus truncatus

Sporocarp
Fruiting body club-shaped, simple, 4-13 cm tall, 3-6 cm wide, tapering to a narrowed base, lacking a distinct stipe and cap; apex typically flattened or depressed at the center, the margin often raised and irregularly bumpy; surface elsewhere more or less smooth to longitudinally wrinkled or grooved; color pinkish-brown to orange-brown below, shading to yellowish-orange at the apex, whitish and hairy at the base; flesh white to yellowish, firm when young, soft at maturity, darkening when injured; odor mild, taste mild to sweet.

	Clavicorona pyxidata
	Synonym: Artomyces pyxidatus (Persoon) Jülich

Clavulina cinerea

Sporocarp
Fruiting body up to 9 cm tall, 6 cm wide, moderately branched, arising from a common base; individual branches often sinuous, tending to produce a flattened or "crested" apical growth, the tips pointed or rounded; surface smooth to slightly wrinkled, dull from a powdery bloom, lilac-grey to, grey, becoming greyish-brown in age; stipe short or absent; context pallid, brittle; odor and taste mild.

	Clavulina cristata
	Sporocarp Fruiting body coralloid, erect, 3-7 cm tall, 2-4 cm broad, branched 3-4 times, tips with short, tooth-like projections; base 2.0 cm tall, consisting of fused branches; surface smooth to slightly wrinkled, white, becoming cream, sometimes tinged yellowish in age, the branch tips typically ochraceous-brown; flesh white to marbled, unchanging; odor and taste mild.

Clavulinopsis laeticolor

Sporocarp
Fruiting body slender, cylindrical to slightly club-shaped, usually unbranched, 2-5 cm tall, 1.5-3 mm thick, straight to slightly curved in profile, sometimes flattened in cross-section; apex obtuse to spatulate, less commonly pointed, usually tapering toward the base; surface smooth, yellow-orange to orange, yellow below, typically pallid to white at the base; flesh pale-yellow, pliant, turning yellow-green to green in 10% KOH; odor and taste mild.

Clitocybe albirhiza

Pileus
Cap 2.0-9.0 cm broad, convex, expanding to plane, sometimes centrally depressed to infundibuliform in age; margin incurved, then decurved, at times wavy to upturned; surface hygrophanous, cinnamon-brown to butterscotch-brown overlain with a whitish sometimes zonate canescence; cap surface at maturity more or less glabrous to finely cracked, uniformly buff to dingy-tan; context thin, 1.0-2.0 mm, soft, pallid, unchanging; odor, indistinct; taste slightly bitter to astringent.

Clitocybe dealbata

Pileus
Cap 2.0-4.0 cm broad, shallowly convex in youth, expanding to nearly plane with a slightly depressed to umbonate disc; margin incurved, then decurved to occasionally raised in age; surface canescent, white, ashy-grey to greyish-tan; streaked or water-spotted at maturity; context thin, 3.0-4.0 mm thick at the disc, 1-2 mm at the margin; context soft, cream-buff, unchanging; odor mild; taste mild to slightly astringent with time.

	Clitocybe deceptiva
	Pileus Cap 1.2-5 cm broad, convex expanding to nearly plane, the disc sometimes slightly to moderately depressed; margin at first incurved, finely striate when moist; surface smooth, hygrophanous, pale tan-brown to grey-brown, fading to pale-buff at maturity, the disk remaining slightly darker; flesh thin, colored like the cap, unchanging; odor of anise; taste mild.

	Clitocybe fragrans
	California Fungi—Clitocybe fragrans

	Clitocybe glacialis
	Pileus Cap 2.0 6.0 cm broad, convex, sometimes with a low umbo; margin incurved, then decurved, occasionally wavy; surface canescent, pale-grey to silvery-grey over a greyish-brown to ochre-brown background, the latter more evident with handling and age; context relatively thin, pallid, soft, unchanging when injured; odor and taste not distinctive.

Clitocybe inversa

Pileus
Cap 2-9 cm broad, convex, expanding to nearly plane, the disc depressed to shallowly infundibulate; margin at first incurved, sometimes undulate to slightly lobed; surface moist, smooth, hygrophanous, color variable: shades of orange, pink and brown, e.g. pinkish-buff, pale orange-brown, pinkish-brown to cinnamon-brown, the margin usually lighter; flesh thin, concolorous with the cap, unchanging; odor slightly fragrant; taste mild to fungal.

	Clitocybe nebularis
	Pileus Cap 5-25 cm broad; convex with an incurved margin, becoming plane to depressed; color greyish to light brownish grey; surface dry to moist, radially fibrillose; flesh thick, white; odor unpleasant, slightly farinaceous to rancid or skunky.

	Clitocybe nuda
	Pileus Cap 4-14 cm broad, convex, becoming nearly plane in age, margin inrolled, wavy, sometimes upturned at maturity; surface smooth, moist, violet to lilac, fading to tan; flesh soft, pale-lilac; odor fragrant, taste mild.

	Clitocybe odora
	California Fungi—Clitocybe odora

Clitocybe sclerotoidea

Pileus
Cap 1.0-3.0 (4.0) cm broad, convex, expanding to nearly plane, with or without a low umbo; margin when young sometimes sulcate-striate or wavy, tomentose, incurved, in age decurved to plane, occasionally raised; surface dry, dull, glabrous or with appressed fibrils, the latter unevenly tan-brown over a cream to pale-grey ground color; context white, firm, up to 4.0 mm thick, unchanging when cut; odor not distinctive; taste mild.

	Clitocybe squamulosa var. montana
	California Fungi—Clitocybe squamulosa var. montana

Clitocybe tarda

Pileus
Cap 2-6 cm broad, convex, expanding to nearly plane, in age often shallowly depressed, with an inconspicuous umbo; margin at first incurved, then decurved, eventually plane to slightly upturned, wavy to lobed, not striate, or if so obscurely; surface glabrous, moist, somewhat waxy in aspect, hygrophanous; color when fresh, medium brown, occasionally tinged lilac, darkest at the disc, shading to a paler margin, in age tan-buff overall; context whitish to pale-buff, soft, thin, 1-4 mm thick, odor indistinct, taste, like that of Agaricus bisporus.

	Clitocybula abundans
	California Fungi—Clitocybula abundans

Clitopilus nitellinus

Pileus
Cap 1.0-4.0 cm broad, convex, expanding to nearly plane, occasionally centrally depressed or with a low umbo; margin incurved in youth, translucent striate, becoming decurved to raised in age; surface, glabrous, hygrophanous, dull reddish-brown to orange-brown, drying to pinkish-buff or pale-tawny; context 1.0-2.0 mm thick at disc, firm, cream-buff, gradually tinged like the cap when cut or injured; odor and taste farinaceous.

Clitopilus prunulus

Pileus
Cap 2.5-9.0 cm broad, convex, broadly so in age, the disc sometimes depressed; margin even to wavy, inrolled when young, becoming decurved, plane to elevated at maturity; surface inconspicuously matted-fibrillose (use hand lens), viscid when wet, otherwise sticky, unpolished, light-grey, darker where handled, fading to ash-grey; context white, unchanging, soft, up to 1 cm thick at the disc; odor and taste strongly farinaceous.

Coccoli: Amanita lanei

Pileus
Cap 8-25 cm broad, convex, becoming nearly plane in age; margin decurved to plane at maturity, conspicuously striate; surface sticky when moist, smooth, typically partially covered with a thick, white patch of universal veil tissue; color variable: dark-brown, orange brown, (typical form), yellow-brown, lemon-yellow in a spring form, white in a rare variant; colors fading in age, often to buff or pale-tan; flesh white to cream, thick; odor mild.

	Collybia acervata: Gymnopus acervatus
	Pileus Cap 0.5-3.0 cm broad, convex when young with an incurved margin, at maturity broadly convex, the margin then decurved; surface glabrous, subviscid when fresh, dingy reddish-brown to vinaceous-brown, hygrophanous, fading when dry to buff-brown; context thin, 1-2 mm thick, colored like the cap, unchanging when cut; odor not distinctive; taste slightly bitter.

	Collybia badiialba: Rhodocollybia badiialba
	Pileus Cap 3-6 cm broad, convex, sometimes with a low umbo expanding to nearly plane at maturity, the disc then sometimes slightly depressed; margin entire to wavy, decurved, becoming more or less plane to slightly upturned; surface glabrous, lubricous, dark reddish-brown, the margin pallid, fading overall in age; odor and taste mild.

	Collybia butyracea: Rhodocollybia butyracea
	Pileus Cap 2.5-6.5 cm broad, convex, becoming broadly convex to nearly plane with a low umbo; margin incurved when young, sometimes upturned at maturity; surface smooth, lubricous, reddish-brown, tawny brown to greyish-brown, darkest at the disk, lighter in age; flesh white, thin, soft, unchanging; odor, fungal; taste mild.

	Collybia cirrhata
	Synonym: Microcollybia cirrhata (Pers.) Lennox

	Collybia cookei
	Synonym: Microcollybia cookei (Bres.) Lennox

	Collybia dryophila: Gymnopus dryophilus
	Pileus Cap 2-5 cm broad, convex, expanding to nearly plane, sometimes slightly umbonate; margin incurved, becoming decurved, at maturity occasionally wavy to upturned; surface smooth, moist, hygrophanous, color varying from reddish-brown, ochraceous-brown to buff-brown, the margin lighter, in age fading to buff; flesh white, thin, unchanging; odor and taste mild.

Collybia racemosa: Dendrocollybia racemosa

Pileus
Cap 0.7-1.5 cm in diameter, broadly conic, becoming convex, eventually plano-convex, the disc slightly umbonate; (in some specimens the cap may be greatly reduced or absent); margin decurved, becoming plane to raised, entire, eroded or wavy; surface dull brown, glabrous at the disc, elsewhere appressed silky-fibrillose, grey-brown, paler towards the margin, sometimes faintly zonate; context thin, less than 1.0 mm thick, grey; odor, not distinctive; taste mild.

	Collybia umbonata: Caulorhiza umbonata
	Pileus Cap 5-15 cm broad, conic with an incurved margin and pointed umbo, becoming planoconvex, the disc then sometimes shallowly depressed but still umbonate; in age the margin wavy, fluted to upturned; surface moist, hygrophanous, smooth, ochraceous-brown, buff-brown to dingy tawny-brown, fading overall at maturity; flesh thin, pallid to cream; odor and taste mild.

Coltricia cinnamomea

Pileus
Cap 1.0-5.0 cm broad, shallowly to strongly infundibuliform, sometimes merely plano-depressed or umbilicate; margin at maturity deflexed, wavy, thin, entire to eroded; when young, growing around and incorporating twigs and debris; surface reddish-brown, rust-brown, to chestnut-brown, usually faintly-zonate, velutinate at the disc, elsewhere silky to coarsely, appressed fibrils, if the former, then somewhat shiny in appearance; context thin, 0.5-2.0 mm thick, colored like the cap surface, blackish with 3% KOH; odor and taste untried.

Coltricia perennis

Pileus
Cap 1.0-7.0 cm broad, plano-depressed to funnel-form or umbilicate; margin straight to wavy, frequently deflexed at maturity; surface dull, matted-tomentose (use hand-lens), sometimes faintly wrinkled, with usually well-defined bands of cinnamon-brown, beige, yellowish-brown and greyish-tan, the actively growing margin lighter; specimens in exposed locations greyish with age; context pliant when fresh, rigid and hard when dry, medium-brown to rust-brown, 1.0-3.0 mm thick, blackish with 3% KOH; odor and taste untried.

Conocybe filaris

Pileus
Cap 1-2.5 cm broad, obtuse-conic to convex, expanding to nearly plane, sometimes with a slight umbo; margin decurved, plane to slightly upturned in age; surface glabrous to faintly wrinkled, striate when moist, otherwise obscurely so, butterscotch-brown to dull tawny-brown, the margin paler, fading when dry (hygrophanous) to cream-buff; context thin, 1-1.5 mm thick, cream-buff to tan-buff, unchanging or darkening only slightly when exposed; odor and taste mild.

Conocybe lactea

Pileus
Cap 0.5-2.5 cm broad, obtuse-conic, occasionally expanding to convex; margin decurved, sometimes slightly upturned in age; surface dry, smooth, striate approximately halfway from the margin to to the disc, at maturity often faintly wrinkled; color: white to cream, the disc pale yellow-brown, senescing to pale-buff overall; flesh very thin, fragile, buff to dull pale-brown; odor and taste mild.

	Conocybe tenera
	Pileus Pileus 10-25 mm broad, bell-shaped, becoming convex with a decurved margin; surface smooth, hygrophanous, striate, obscurely so in age, at first light-brown, fading to dull, buff-brown or ochraceous-brown; flesh thin, cream-buff; odor and taste mild.

Coprinellus angulatus

Pileus
Cap 1.5-3.0 cm broad, broadly parabolic to obtuse-conic, becoming campanulate to plano-convex, in age, margin upturned, torn, and deliquescent; surface glabrous to the unaided eye, minutely hairy viewed with a hand lens, striate-plicate at the margin, striations extending to near the disc, the latter buff-brown to dingy tawny-brown, shading to greyish-buff towards the margin; context thin, membranous; odor and taste not distinctive.

Coprinellus disseminatus

Pileus
Cap 0.5-1.5 cm broad, narrowly to broadly parabolic, expanding sometimes to convex or bell-shaped; surface dry, minutely hairy but usually glabrous at maturity, striate-furrowed to near the disc, the margin striate-sulcate; color: pale yellow-brown to tawny-brown at the disc, shading to a lighter margin, becoming pale grey-brown in age except for the disc; flesh thin, soft, fragile; odor mild.

Coprinellus flocculosus

Pileus
Cap cylindrical-ovoid in youth, up to 3.0 cm tall, 1.5 cm wide, becoming obtuse-conic to campanulate, eventually broadly-conic to nearly plane, 2.0-4.0 cm fully expanded; margin decurved at first, slightly wavy, striate to near the disc, soon plicate, in age recurved and torn; surface dull yellowish, mustard-brown, to buff at the disc, paler towards the margin, greyish at maturity; cap surface covered with evanescent, whitish to buff, felty, universal veil fragments, these concentrated at the disc; context thin, approximately 1.0 mm at the disc, colored like the disc; deliquescent; odor and taste not distinctive.

	Coprinellus micaceus
	Pileus Cap 2-5 cm broad, cylindrical to oval, becoming conic, finally campanulate; yellow-brown, conspicuously striate to corrugate, covered with evanescent glistening granules; margin becoming torn, sometimes upturned in age, deliquescing towards the center; flesh thin, soft, white.

	Coprinopsis atramentaria
	Pileus Cap 3-8 cm broad, oval, becoming conic, finally campanulate in age; grey-brown, dry, with innate silky fibrils; disc darker, usually with small flattened scales; margin striate to corrugated, deliquescing towards the center; flesh thin, pallid.

Coprinopsis ephemeroides

Pileus
Cap ellipsoid to bullet-shaped in youth, 4-7 mm tall x 2-3 mm wide, becoming obtuse-conic to convex, then plane, 7 to 12 mm expanded; margin at first incurved, then decurved, revolute in age; surface plicate-striate, covered with whitish granules which become pale-yellow and coarser at the disc; cap becoming ash-grey overall as the gills mature; context membranous, watery-grey, deliquescing in age; odor and taste mild.

Coprinopsis friesii

Pileus
Cap 0.5-1.5 cm broad, at first ellipsoid, then obtuse-conic, eventually broadly-conic to nearly plane; margin incurved, becoming decurved, radially split, and revolute at maturity; surface striate to near the disc, white to ash-grey, darker-grey in age, covered with small, pallid to tan-colored, evanescent scales, concentrated at the disc; context membranous, weakly deliquescent; odor not distinctive; taste untried.

	Coprinopsis lagopus
	Pileus Cap 3-6 cm broad, obtuse-conic, expanding to nearly plane, umbonate, the margin recurved in age, often split or ragged from deliquescing gills; surface at first covered with erect, soft, white hairs (universal veil remnants), typically weathering away at maturity to reveal a striate, greyish-brown cuticle; flesh thin, pale grey.

Coprinopsis radiata

Pileus
Immature cap parabaloid to ellipsoid, 3-10 (15) mm tall, 2-8 (10) mm broad, expanding to broadly-conic, 5-15 (20) mm broad; margin at first incurved, soon level, eventually revolute and torn; surface radially-striate, dark-grey, sometimes ochre-tan at the disc, covered in youth by a veil of white, deciduous hairs; context thin, watery grey, deliquescent; odor not distinctive, taste untried.

	Coprinopsis stercorea
	Pileus Cap 4.0-10.0 mm broad at maturity, at first ellipsoid to ovoid, then obtuse-conic, expanding to plane, the margin becoming recurved and torn; surface white to pale-grey, striate-plicate to near the disc, mealy-granulose, hairy toward the margin, in age the hairs inconspicuous; context thin, membranous, weakly deliquescent; odor unpleasant; taste untried.

Coprinus auricomus: Parasola auricoma

Pileus
Cap 1.5-4.0 cm broad at maturity, at first ellipsoid to obtuse-cylindrical, expanding to nearly plane, the disc sometimes slightly depressed; margin incurved in youth, finely striate, becoming decurved to plane; surface of disc glabrous, lubricous when moist, with expansion the remaining cap plicate-ribbed and minutely hairy (use hand lens); disc reddish-brown to dull orange-brown, greyish-buff towards the margin; context thin, <1.0 mm, colored like the cap, unchanging; odor and taste not distinctive.

Coprinus calyptratus

Pileus
Cap at first globose to hemispheric, expanding to nearly plane, 4.0-7.0 (9.0) cm broad at maturity; margin incurved, then decurved, plicate-striate, soon lacerate, in age either recurved or deflexed; cap disc covered by a felty, pallid to buff-brown, stellate universal veil patch, often encrusted with sand or debris; cuticle pallid, thin, torn by expansion into radially arranged whisp-like fibrils; context membranous, blackish, plicate; odor pleasant, of mushrooms; taste untried.

	Coprinus comatus
	Pileus Cap 5-14 cm tall, 2.5-4.5 cm broad, columnar, becoming bell-shaped; surface dry, white with a brown central disc, breaking up into coarse, white and brown, recurved scales; flesh thin, white, and soft; odor and taste mild.

Coprinus sterquilinus

Pileus
Unexpanded cap cylindrical-elliptical, 3.0-6.0 cm tall x 2.0-2.5 cm broad, broadly obtuse-conic in age, final diameter up to 7.0 cm; margin at first tight to the stipe, blunt, striate, then decurved, at maturity often radially torn, recurved or collapsing towards the stipe; surface more or less glabrous at the disc, pale-tan, elsewhere whitish, striate-plicate, fibrillose to squamulose, the scales recurved with tan-brown tips, eventually blackening from the margin; context white, 3 mm at the disc, less than 1 mm, towards margin, deliquescing; odor not distinctive; taste, mild.

Coriolus versicolor: Trametes versicolor

Sporocarp
Fruiting body up to 10 cm broad, bracket to shelf-like or fan-shaped, attached along one side or just near the middle of one side, the upper surface tomentose, with multicolored zones. Flesh thin, usually less than 2 mm thick, white, tough, and fibrous. The underside a white to pale yellow layer of very small tubes, vertically oriented with 3-5 pores per mm, the tube mouths more or less round.

	Cortinarus caperatus
	Common Name: The Gypsy

	Cortinarius magnivelatus
	Pileus Cap 4.0-8.0 cm broad, convex, broadly so in age; margin incurved, then decurved, frequently wavy; surface whitish to cream, dry, sparsely covered with appressed, brownish fibrils, bruising brownish and sometimes yellowish; context up to 2.0 cm, firm, white to buff, unchanging or slowly to tan-brown; odor and taste mild.

	Cortinarius ponderosus
	California Fungi—Cortinarius ponderosus

Cortinarius rubicundulus

Pileus
Cap 3.5-8.0 cm broad, convex, expanding to nearly plane; margin even to wavy, incurved when young, decurved in age; surface cream to buff-tan, overlaid with appressed fibrils which become yellowish-orange to orange-red with handling or age; context firm, cream-buff, up to 1.0 cm thick at the disc, yellowing slowly and erratically when cut; odor faint, somewhat pungent like that of raw potatoes; taste slightly unpleasant.

Cortinarius vanduzerensis

Pileus
Cap 3.5-7.0 cm broad, obtuse-conic, becoming convex-umbonate to plane with a raised disc; margin at first incurved, appressed to the stipe, eventually decurved; surface when young, glabrous, slimy to glutinous in moist weather, dark-brown at the disc, the margin lighter, translucent-striate; in age cap fading to dull tan-brown, the margin then conspicuously wrinkled halfway to the disc; context up to 7.0 mm thick at the disc, thin elsewhere, whitish, firm, darkening slowly to buff-brown when cut; odor and taste mild.

	Cortinarius verrucisporus
	Pileus Cap up to 3.0-7.0 cm broad, convex, expanding to plano-convex; margin incurved, then decurved, often wavy; surface at first pallid to pale-buff with innate to appressed fibrils, these becoming yellowish to tawny in age, the disc then often dingy reddish-brown; context firm, cream-buff, unchanging, up to 1.0 cm at the disc; odor and taste mild.

Cramp Balls: Annulohypoxylon thouarsianum

Sporocarp
Fruit body annual, sessile, 1.0-5.0 cm broad, up to 3.0 cm in height, compressed-globose to hemispheric, occasionally lobed; surface dark-brown to black, carbonaceous, dull or varnished, densely pimpled with perithecia, the tips encircled by a flat, sometimes sunken disc; context fibrous-woody, radially lined to faintly concentrically-zoned grey and brown, sometimes appearing silky-lustrous; odor and taste not investigated.

	Craterellus tubaeformis
	Pileus Cap 2-4 cm broad, at first convex, then depressed, sometimes hollow in the center, trumpet-shaped; margin incurved, wavy; surface dry, brown to yellowish-brown, with fine dark scales; flesh thin, yellowish-brown; odor and taste mild.

	Crepidotus crocophyllus
	California Fungi—Crepidotus crocophyllus

	Crepidotus fimbriatus
	Pileus Cap 1.0-3.0 cm broad, at first cupulate, becoming kidney to shell-shaped; margin incurved, fringed with a cottony tomentum; surface covered with appressed white fibrils over an ochre-brown background, the attachment point sheathed in cottony-villose fibrils; context thin; odor and taste mild.

	Crepidotus mollis
	Pileus Fruiting body 1.0-5.0 cm broad, bean to shell-shaped, laterally attached to the substrate and sessile; cuticle gelatinous when moist, surface pallid to cream, typically covered with fibrillose-brown scales, the latter sometimes weathering away in age; flesh thin, white, quickly bruising buff; veil absent; odor and taste mild.

	Crinipellis piceae
	California Fungi—Crinipellis piceae

Cryptoporus volvatus

Sporocarp
Fruiting body annual, persistent, sessile, globose to cushion-shaped, occasionally lobed, 1.5-6.5 cm broad, 1-2.5 cm thick; surface smooth, shiny, chestnut-brown to ochraceous-brown, occasionally tinged pinkish at the attachment point, in age unpolished, fading to buff-brown; margin broad, rounded, continuing as a tough, buff-brown to whitish, veil-like membrane over the spore-bearing surface; flesh white, thick, pliant at first, tough in age; tubes 3-5 mm long, pallid becoming buff-brown; pores 3-4/mm.

Cudoniella clavus

Ascocarp
Fruiting body a stipitate ascocarp; apothecia 3.0-6.0 (10.0) mm broad, at first obtuse-conic to turbinate, in age convex to nearly plane; margin lacking hairs, plane to decurved at maturity; hymenium glabrous, moist, cream to dull-brown, slightly darker at the center; outer surface glabrous, colored like the hymenium; stipe 1.0-2.0 cm long, 1.0 mm thick, enlarged towards the apex, watery-white, becoming dark-brown to blackish towards the base; surface slightly tomentose (use hand lens); odor and taste not distinctive.

Cystoderma fallax

Pileus
Cap 1.5-4.0 cm broad, convex, expanding to plano-convex, sometimes with a low umbo; margin at first slightly inrolled and fused to a sheathing stipe, then decurved, occasionally appendiculate, finally nearly plane; surface covered with superficial granules or small erect scales, most of which weather away in age leaving only a scattering of powdery granules; color: rusty-brown to yellow-brown; flesh thin except at the disc, colored like the cap; odor and taste mild.