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#mushrooms

27 Beiträge24 Beteiligte1 Beitrag heute
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MushroomBot

Entoloma caccabus

mushroomexpert.com/Entoloma_ca

Ecology: Saprobic; growing gregariously in bare soil under northern red oak, white oak, hop hornbeam, and persimmon; July; Coles County, Illinois.

Cap: 1-3 cm; planoconvex with a slightly incurved margin at first, becoming shallowly depressed, with a wavy margin and a small umbo; moist; bald; dark grayish brown to dark yellowish brown at first, fading markedly to medium yellowish brown (but often retaining a darker center); the margin becoming slightly translucent-lined with age.

Gills: Attached to the stem; nearly distant; whitish at first, becoming pink; short-gills frequent.

Stem: 2.5-3.5 cm long; 2-4 mm thick; equal; dry; bald or finely silky; whitish to grayish or brownish.

Flesh: Thin; insubstantial; watery whitish to brownish.

Odor and Taste: Mealy.

Chemical Reactions: KOH on cap surface negative.

Spore Print: Pink.

Microscopic Features: Spores 7-10 x 6-8 ; 5- to 6-sided; heterodiametric or occasionally nearly isodiametric; angular; smooth; hyaline. Hymenial cystidia absent. Pileipellis a cutis; elements 5-12.5 wide, brown to brownish in 10% ammonia, with intracellular pigment. Clamp connections present.

Entoloma caccabus mushroom image.
#mushrooms#fungi#mycology
Öffentlich
MushroomBot

Cyathus olla

mushroomexpert.com/Cyathus_oll

Ecology: Saprobic; growing scattered, gregariously, or in dense clusters; sometimes growing terrestrially, but often found on woody debris; frequently encountered on dead plant stems, including corn husks in cornfields and debris in canola fields; summer and fall; widely distributed in North America.

Nest: 8-15 mm high; 6-10 mm wide; cup-shaped or goblet-shaped; outer surface brownish to grayish, bald or minutely hairy to velvety (but not conspicuously hairy); inner surface bald and shiny, silvery gray to blackish; "lid" typically whitish to pale grayish, soon disappearing; outer edge flared open widely by maturity, frequently broadly wavy.

Eggs: To 3 or 4 mm wide; round to somewhat irregular in outline; usually somewhat flattened; gray to gray-brown or nearly black; sheathed; attached to the nest by cords.

Microscopic Features: Spores 10-14 x 6-8 m; ovate to ellipsoid; smooth.

Cyathus olla mushroom image.
#mushrooms#fungi#mycology
Öffentlich
MushroomBot

Russula virescens

mushroomexpert.com/Russula_vir

Ecology: Mycorrhizal with hardwoods (but I have collected it under conifers with no hardwoods nearby); growing alone or gregariously; summer and fall; widely distributed east of the Rocky Mountains, and occasionally reported in western North America.

Cap: 5-15 cm; round to convex when young, becoming broadly convex to flat to uplifted with a shallow depression; dry; velvety; the surface soon cracking up into small patches; green to yellowish green; the margin not lined to very slightly lined; the skin peeling about halfway to the center.

Gills: Attached to the stem or nearly free from it at maturity; close or crowded; white to cream.

Stem: 3-9 cm long; 2-4 cm thick; brittle; dry; smooth; white; discoloring brownish with age.

Flesh: White; brittle; thick; not changing when sliced.

Odor and Taste: Odor not distinctive; taste mild.

Spore Print: White.

Microscopic Features: Spores 6-9 x 5.5-7 ; elliptical to subglobose; warts extending to 0.5 high; connectors variable (nearly absent, scattered, or creating partially reticulated areas). Pleurocystidia scarce. Pileipellis a cutis overlaid with epithelium-like areas (the crustose patches) composed of elements of chained cells diminishing in width from base to tip, with the terminal cell projecting an extension that is frequently elongated and tapered; pileocystidia cylindric with capitate apices, positive in sulphovanillin.

Russula virescens mushroom image.
#mushrooms#fungi#mycology
Öffentlich
MushroomBot

Amanita arkansana

mushroomexpert.com/Amanita_ark

Ecology: Mycorrhizal with oaks; summer; distributed east of the Great Plains from roughly I-70 southward. The illustrated and described collections are from Illinois and Indiana.

Cap: 8-16 cm across; oval at first, expanding to convex and, later, planoconvex; bald; sticky when fresh, but soon dry; when young yellowish orange with or without a yellow marginal area, becoming yellowish orange to yellow overall, with a brownish orange to brownish yellow center; without warts or patches; the margin grooved for several centimeters.

Gills: Free from the stem or slightly attached to it; whitish to pale yellow; close; not discoloring; short-gills present.

Stem: 10-20 cm long; 1-2.5 cm thick; tapering slightly to apex; base even, or with a slight bulb; dry; bald or finely silky; whitish to yellowish; with a white to pale yellow, skirtlike ring and a white, sacklike volva.

Flesh: White; not staining on exposure.

Odor: Not distinctive.

Spore Print: White.

Microscopic Features: Spores 8-10 x 5-7 m; broadly ellipsoid to subamygdaliform; smooth; hyaline in KOH; inamyloid. Basidia 4-sterigmate. Hymenial cystidia not found. Subhymenium cellular. Pileipellis an ixocutis of elements 2-4 m wide, hyaline to yellowish in KOH.

Amanita arkansana mushroom image.
#mushrooms#fungi#mycology
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