> Flesh (and often the gills) yellow or yellowish. (1/5)

° Cap yellow, yellowish, olive, or yellowish brown. (1/2)

~ Cap covered with brownish-blackish scruffies, especially in the center. (1/2)

Tricholomopsis decora

~ Cap smooth, finely hairy, or without scruffies--or with yellowish or olive (not blackish brown) scruffies. (2/2)

Cap yellow; spores 5.5-6.5 µ long; cap margin not fringed; found east of the Rocky Mountains and in the Pacific Northwest. (1/4)

Tricholomopsis sulfureoides

Cap chrome yellow; spores 7-9 µ long; cap margin sometimes fringed; found in the Pacific Northwest. (2/4)

Tricholomopsis flavissima

Cap olive to olive brown, developing yellow shades; spores 4.5-6 µ long; cap margin not fringed; probably widely distributed. (3/4)

Callistosporium luteo-olivaceum

Cap olive to olive brown, developing yellow shades; spores longer than 6 µ; cap margin not fringed; found in the Pacific Northwest. (4/4)

Callistosporium graminicolor

° Cap reddish to purplish red. (2/2)

Cap surface smooth; gills with pinkish or purplish tones; growing on decayed wood of hardwoods. (1/2)

Callistosporium purpureomarginatum

Cap surface densely covered with reddish to purplish red scruffies over a yellowish base color; gills without pinkish or purplish tones; growing on decayed wood of conifers. (2/2)

Tricholomopsis rutilans

> Cap notably slimy or sticky, at least in normal conditions; stem dark and fuzzy/velvety, at least towards the base. (2/5)

° Cap whitish; growing in coastal British Columbia and Alaska. (1/2)

Flammulina rossica
at U Tennessee

° Not as above. (2/2)

~ Growing at high altitude in Mexico, from stumps of Senecio cineraroides, a woody plant. (1/2)

Flammulina mexicana
at U Tennessee

~ Not as above. (2/2)

Growing on Quaking Aspen and other poplars in the Rocky Mountains or westward; spores 6-7.5 µ long. (1/2)

Flammulina populicola

Growing on other hardwoods; widely distributed; spores 7-9 µ long. (2/2)

Flammulina velutipes

> Stem base attached to long, white mycelial cords; cap grayish brown and streaked-looking; stem pure white. (3/5)

Megacollybia platyphylla
( = Tricholomopsis platyphylla)

> Cap and stem prominently hairy or scaly. (4/5)

° Cap 1-3.5 cm, tawny brown to golden brown, densely hairy; gills white; odor and taste not distinctive or slightly mealy; spores 4-6 µ long; growing on dead wood of hardwoods; found in eastern North America. (1/4)

Crinipellis zonata

° Cap 1-2 cm, brown to rusty brown, densely hairy; gills white; odor and taste not distinctive; spores 8-9 µ long; growing on dead wood of conifers, including the lower branches of living trees; found in northern North America. (2/4)

Crinipellis campanella

° Cap to 1 cm, whitish to buff or tawny, with a darker center, densely hairy; gills white; odor and taste not distinctive; spores 7-10 µ long; growing on dead wood of conifers, especially spruce; found on the west coast. (3/4)

Crinipellis piceae
photo only

° Cap 5-8 cm, covered with dark brick red scruffies over a cinnamon ground color; gills whitish to yellowish; odor and taste unpleasant; spores 6-7 µ long; growing on dead wood or in sawdust; found east of the Rocky Mountains. (4/4)

Tricholomopsis formosa

> Not as above. (5/5)

° Young, fresh cap lavender (not violet or violet brown). (1/3)

Cap lavender to lilac, fading to tan; gills close or crowded, lavender; stem to 5 cm x 3 mm, lavender; odor and taste not distinctive; spores 3.5-4.5 x 2-3 µ, elliptical; growing scattered or in loose clusters on decayed wood of hardwoods or conifers, especially hemlock; widely distributed. (1/1)

Baeospora myriadophylla
photo only

° Young, fresh cap whitish. (2/3)

Cap whitish with a grayish center; gills close, whitish; odor and taste not distinctive; spores 4.5-6.5 x 3.5-5.5 µ, nearly round; growing on decayed wood of hardwoods or conifers; probably widely distributed. (1/4)

Clitocybula abundans

Cap to 9 cm, buff to pale cinnamon, developing rusty spots; gills close or crowded, whitish to buff, often spotting rusty; stem to 10 cm x 13 mm, whitish, developing rusty spots; odor none or unpleasant, taste bitter; spores 5.5-6.5 x 5-5.5 µ, nearly round, round, or broadly elliptical, dextrinoid; growing gregariously on conifer wood; found in northeastern North America. (2/4)

Rhodocollybia maculata
( = Collybia maculata)

Cap to 5 cm, pale tan to buff or creamy; gills crowded, buff; stem to 12 cm x 6 mm, whitish; odor strong, taste not distinctive; spores 7-9 x 2.5-3.5 µ, elliptical, inamyloid; growing in clusters on decayed wood of hardwoods; found in northeastern North America. (3/4)

Marasmius cystidiosus

Cap to 4 cm, whitish at first, later flushed pinkish; gills crowded, white or pinkish, staining yellowish; stem to 4 cm x 5 mm, pale above, pinkish below; odor and taste not distinctive; spores 4-5 x 3-4 µ, broadly elliptical or nearly round; growing on decayed wood of conifers; found in the Pacific Northwest. (4/4)

Collybia bakerensis

° Young, fresh cap not lavender, not whitish. (3/3)

~ Taste markedly reminiscent of garlic or onions. (1/2)

Cap to 6 cm, dark reddish brown, fading to cinnamon, grooved; gills distant, buff or tan; stem to 4 cm x 5 mm, reddish brown; spores 8-8.5 x 3.5-4 µ, elliptical; growing gregariously or in clusters on wood chips; found in the northeastern United States. (1/2)

Gymnopus dysodes
at NYBG
( = Collybia dysodes)

Cap to 3 cm, reddish brown to yellowish brown, fading to yellowish; gills crowded, close, or nearly distant, whitish to buff; stem to 6 cm x 3 mm, buff above, dark brown below; spores 7-10 x 3-5 µ, elliptical; growing on twigs, in humus, on dead wood, from the bark of living trees, or in grass; found in northern North America and in California. (2/2)

Marasmius scorodonius
at Fungi of Poland

~ Taste not reminiscent of garlic or onions (but possibly bitter, alkaline, unpleasant, etc.). (2/2)

Page Two

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Cite this page as:

Kuo, M. (2008, May).Collybioid mushrooms. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/collybioid_01.html