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#mushrooms

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Nidularia pulvinata

mushroomexpert.com/Nidularia_p

Ecology: Saprobic; growing scattered or gregariously on old, decorticated deadwood of hardwoods or conifers (including driftwood) in natural settings; usually growing on the upper sides of logs; summer and fall; originally described from the Carolinas; widely distributed in North America. The illustrated and described collections are from Missouri and Ohio.

Nest: 5-10 mm across; shaped like a glob or a ball; outer surface finely shaggy, powdery, or velvety, becoming smoother with age (but often appearing "lumpy" as a result of being pressed against the eggs inside); brown or grayish brown (less often reddish brown), fading to pale brown or nearly white; at maturity breaking up irregularly to expose a pile of eggs.

Eggs: To 1 mm wide; irregularly shaped—ranging from circular to elliptical in outline, and from platelet-like to lozenge-like or lens-like overall; shiny; grayish brown; at first embedded in gel.

Dried Specimens: Brown overall; eggs not becoming wrinkled.

Microscopic Features: Spores 6-9 x 4.5-5.5 m; ellipsoid; smooth; thin-walled; hyaline in KOH. Hyphae from cortex of peridiole inseparable; branching; thick-walled; brown in KOH. Hyphae of the peridium 2-8 m wide; smooth; spinose; brown in KOH. Clamp connections present.

Suillus weaverae

mushroomexpert.com/Suillus_wea

Ecology: Mycorrhizal with eastern white pine; growing alone or, more often, gregariously; summer (often among the first species of Suillus to appear) through early winter or, in warm climates, over winter; originally described from Minnesota (but see discussion above); widely distributed throughout the natural range of eastern white pine, as well as areas where the tree is widely planted in urban locations and in woodland plantations. The illustrated and described collections are from Illinois.

Cap: 3-20 cm across; convex becoming broadly convex or nearly flat; sticky or slimy when fresh; bald; orange-brown to reddish brown when young, often with the pigment breaking up into mosaic-like patches; becoming dull orangish brown, yellow-brown, pale brown, or tan with maturity and eventually, in decay, dark brown; margin when young sometimes soft, whitish, and overhanging by a few millimeters.

Pore Surface: Often beginning to run down the stem; whitish at first, but soon yellowish and eventually dull brownish yellow; sometimes dotted with droplets of cloudy liquid when young; not bruising, or sometimes bruising and spotting brownish; pores about 1 mm wide at maturity; not strongly boletinoid but sometimes weakly so in age; tubes up to 1 cm deep.

Stem: 4-8 cm long; 1-2 cm thick; equal or with a tapering base; with tiny, yellow to pinkish or brownish glandular dots on the upper half or overall; without a ring; white, developing bright yellow shades near the apex or overall; sometimes bruising slowly brown where handled; basal mycelium white.

Flesh: White at first, but soon pale yellow; not changing when sliced.

Odor and Taste: Odor a little fragrant, or not distinctive; taste slightly sour, or not distinctive.

Chemical Reactions: Ammonia negative on dark young caps, and negative on older, less pigmented caps; pink on flesh; dull salmon pink on pore surface. KOH flashing dark green, then resolving to greenish black on young caps, but merely dark gray on older caps; dark gray to purplish or bluish on flesh; dull salmon pink on pore surface. Iron salts gray on young caps, but negative on older caps; bluish to purplish on flesh; olive to green on pore surface.

Spore Print: Cinnamon brown to brown.

Microscopic Features: Spores 6-10 x 2-3 m; boletoid-fusiform; smooth; hyaline to yellowish in KOH. Basidia 22-28 x 4-5 m; subclavate; 4-sterigmate. Hymenial cystidia in bundles; 30-90 x 4-11 m when clearly defined; cylindric with subclavate apices, or fusiform to lageniform; smooth; thin-walled; brown in KOH; often gelatinizing and poorly defined individually. Pileipellis an ixocutis; elements in young caps often obscured by extensive gelatinization and dark yellow-brown pigment globules; elements in older caps 2.5-10 wide, smooth or appearing encrusted by tiny pigment globules, brownish to brown in KOH.

Aureoboletus mirabilis

mushroomexpert.com/Aureoboletu

Ecology: Mycorrhizal; associated with hemlocks; growing alone, scattered, or gregariously on well-decayed, mossy hemlock stumps and logs—or terrestrially in the vicinity of hemlock stumps; fall and winter; distributed from northern California to Alaska. The illustrated and described collection is from Oregon.

Cap: 8-16 cm; convex, becoming broadly convex or slightly bell-shaped; dry; granular-felty, becoming finely scaly with age; brownish red to brownish purple; the margin with an overhanging, sterile portion.

Pore Surface: Bright to dull yellow when young; becoming olive yellow as spores mature; not bruising; about 1 pore per mm at maturity; tubes to 2 cm deep.

Stem: 7-10 cm long; 1.5-3 cm thick; club-shaped, especially when young; solid; yellow at apex but elsewhere dark brown to dark reddish brown, streaked with paler areas; not bruising; bald below and sometimes overall, but usually coarsely reticulate over the upper portion.

Flesh: Whitish to pale yellowish; sometimes purplish under the cap cuticle; not staining on exposure.

Odor and Taste: Not distinctive.

Spore Print: Olive brown.

Microscopic Features: Spores 16-22 x 6-8 m; fusiform; smooth; golden in KOH. Basidia 4-sterigmate; about 40 x 12.5 m; clavate. Hymenial cystidia 60-80 x 7.5-12.5 m; cylindric to fusiform; smooth; thin-walled; hyaline in KOH. Pileipellis a trichoderm; elements 4-8 m wide, smooth or slightly encrusted, hyaline to golden in KOH; terminal cells subclavate, or cylindric with rounded apices.

Crepidotus cinnabarinus

mushroomexpert.com/Crepidotus_

Ecology: Probably saprobic, but see the comments above; growing alone, scattered, or gregariously on the well decayed deadwood of hardwoods (especially basswood and aspens); fairly rare; widely distributed east of the Great Plains, from southern Canada to Mexico. The illustrated and described collections are from Michigan and Ohio.

Cap: 2-18 mm across; semicircular, shell-shaped, or fan-shaped; finely fuzzy when fresh, becoming minutely pitted or more or less bald; dry; bright orangish red.

Gills: Close or nearly distant; when young yellow with red edges or red overall; becoming dull brown with maturity.

Stem: Absent, but a pale, lateral pseudostem is occasionally present.

Flesh: Soft; thin; whitish to yellowish; unchanging when sliced.

Odor and Taste: not distinctive.

Chemical Reactions: KOH on cap surface slowly dark red.

Spore Print: Brown.

Microscopic Features: Spores 5-7 x 4-5 m; broadly ellipsoid; finely roughened, but often appearing more or less smooth; hyaline in KOH; faintly to moderately dextrinoid. Basidia 4-sterigmate. Pleurocystidia not found. Cheilocystidia 50-60 x 6-6 m; cylindric with rounded or subfusiform apices; flexuous; smooth; thin-walled; hyaline in KOH. Pileipellis a cutis; elements 2.5-5 m wide, hyaline to pinkish orange in KOH, smooth. Clamp connections not found.

Panus conchatus

mushroomexpert.com/Panus_conch

Ecology: Saprobic; growing alone or, more frequently, gregariously to clustered, on decaying hardwood sticks and logs; spring through fall, and over winter in warm climates; originally described from France; widespread in Europe but less common in Mediterranean areas; widely distributed in North America from Canada to Mexico but apparently absent or rare in the southern Rocky Mountains; reported from the Caribbean and South America. The illustrated and described collections are from California, Illinois, and Missouri.

Cap: 3-12 cm wide; broadly convex at first, but soon developing a central depression or becoming deeply vase-shaped; dry; bald or minutely fuzzy but not prominently hairy; often radially wrinkled; purplish to purplish brown when young, becoming brown to tan or whitish in age but often retaining a purplish margin; often developing concentric zones of color; the colors often breaking up into patches with maturity; the margin inrolled at first, later sometimes becoming scalloped or lobed in places, and faintly lined.

Gills: Running down the stem; close or nearly distant; often forking; short-gills frequent; whitish to yellowish or purplish when fresh and young; becoming pale brownish.

Stem: 2-8 cm long; 1-1.5 cm wide; tough; often off-center or lateral; equal, or slightly enlarged toward the base; dry; hairy when young, especially toward the base; colored like the cap or paler; basal mycelium white.

Flesh: Whitish; very tough; unchanging when sliced.

Odor and Taste: Not distinctive.

Chemical Reactions: KOH on cap surface negative to slowly greenish yellow.

Spore Print: White.

Microscopic Features: Spores 4.5-6.5 x 2.5-4 m; ellipsoid to subcylindric; smooth; hyaline in KOH; inamyloid. Basidia 4-sterigmate. Cheilocystidia 30-50 x 5-7.5 m; widely cylindric to subclavate or slightly irregular; smooth; thin-walled; hyaline in KOH. Pleurocystidia 25-60 x 5-10 m; cylindric to widely cylindric, subclavate, or subfusiform; smooth; developing walls up to 2 m thick; hyaline in KOH. Pileipellis a cutis; elements 2.5-5 m wide, smooth or very slightly encrusted, clamped at septa, hyaline to brownish in KOH.

Amanita farinosa

mushroomexpert.com/Amanita_far

Ecology: Mycorrhizal with hardwoods or conifers; sometimes appearing in urban, grassy areas near trees; growing alone, scattered, or gregariously; early spring to late fall; widely distributed east of the Rocky Mountains, from Quebec to Costa Rica--though a similar western species is probably undescribed (see comments below).

Cap: 2.5-6.5 cm; convex at first, becoming convex or nearly flat; dry; the surface dusted with fine, mealy powder which rubs off easily; occasionally with the powder gathered into a few scattered warts or patches; the margin prominently lined for 1-2 cm by maturity; brownish gray to brownish or nearly whitish; bald.

Gills: Free from the stem or slightly attached to it; whitish; close; short-gills few.

Stem: 3-9 cm long; 3-10 mm thick; more or less equal above a slight basal bulb that is often covered with grayish powder like the cap (sometimes only as a smear on the upper edge of the bulb); whitish; bald or slightly silky; without a ring; solid or partially hollow in age.

Flesh: White; not staining on exposure.

Odor: Not distinctive, although one author claims there is a: "strong, mink smell in old specimens" (Phillips, 1991). What I want to know is: Why was Roger Phillips sniffing a mink?

Spore Print: White.

Microscopic Features: Spores 5-8 x 5-6 ; smooth; broadly lacrymoid to subamygdaliform; inamyloid. Pileipellis a cutis or ixocutis of elements 2-7 wide. Basidia 4-spored; unclamped. Lamellar trama bilateral; subhymenium with inflated cells.

Caulorhiza umbonata

mushroomexpert.com/Caulorhiza_

Ecology: Presumed to be saprobic on decaying debris under redwoods; growing alone, scattered, or gregariously; fall and winter; throughout the range of Sequoia sempervirens.

Cap: 3-17 cm; conical or bell-shaped when young, becoming broadly bell-shaped and typically retaining a central bump or point; dry or a little sticky; smooth; dark brown to reddish brown, fading to tan or yellowish brown.

Gills: Attached to the stem, often by means of a notch--or nearly free from the stem in maturity; close; whitish, sometimes discoloring yellowish to pinkish or brownish.

Stem: 5-15 cm long above ground, with an additional 30 cm or more below ground; up to about 1.5 cm thick at the widest portion; typically tapering to apex, and with the "root" gradually tapered; dry; smooth; tough; often twisted; whitish or dirty yellowish or tan.

Flesh: Whitish, thin.

Odor & Taste: Not distinctive.

Spore Print: White.

Microscopic Features: Spores 5-8 x 3-5 ; elliptical; smooth; amyloid. Pleuro- and cheilocystidia abundant; 55-90 x 9-15 ; fusoid to fusoid-ventricose, occasionally with swollen areas; thin-walled. Pileipellis a thin cutis of narrow elements above a cellular-like layer of inflated elements; hyaline to brown in KOH.

Pluteus aurantiorugosus

mushroomexpert.com/Pluteus_aur

Ecology: Saprobic on decaying hardwood logs and stumps; growing alone or in small groups; summer and fall; widely distributed in North America, but encountered more frequently east of the Rocky Mountains. The illustrated and described collections are from Illinois and Québec.

Cap: 2-5 cm; convex at first, becoming broadly convex to nearly flat, sometimes with a central bump; dry or moist; bald, or slightly granular; the margin not lined, or only faintly lined, at maturity; bright scarlet to orange when young, fading to orangish yellow in age.

Gills: Free from the stem; close or nearly crowded; short-gills frequent; whitish, becoming pinkish; often with yellowish edges.

Stem: 3-6 cm long; 0.5-1 cm thick; equal; finely hairy and fibrous; whitish to yellowish above, but flushed with the cap color below; basal mycelium white or yellowish.

Flesh: Pale yellowish; unchanging when sliced.

Odor and Taste: Not distinctive.

Spore Print: Pink.

Microscopic Features: Spores 5.5-8 x 4-5 ; ellipsoid; smooth; hyaline and uniguttulate in KOH; inamyloid. Hymenial cystidia infrequent; widely lageniform; thin-walled; to 50 x 15 . Pileipellis a cystoderm with inflated terminal elements. Clamp connections absent.

Melanoleuca brevipes

mushroomexpert.com/Melanoleuca

Ecology: Probably saprobic; found in grassy areas and disturbed soil, often in urban areas; summer and fall; widely distributed in North America.

Cap: 2-8 cm across; broadly convex or flat, sometimes with a shallow central bump; smooth; dry; dark gray to nearly black when young, becoming gray and eventually fading to dull brownish or paler.

Gills: Attached to the stem, usually by a notch; fairly crowded; white.

Stem: 1-3 cm long; up to 1 cm thick; firm; club-shaped when in the button stage, becoming equal with a slightly swollen base; sometimes twisted; dry; whitish.

Flesh: White in cap; white or brownish in the stem.

Odor and Taste: Not distinctive.

Spore Print: White.

Microscopic Features: Spores 6.5-9.5 x 5-6.5 ; more or less elliptical; ornamented with amyloid warts. Pleurocystidia absent or rare (when present similar to cheilocystidia). Cheilocystidia abundant; variously shaped; often capped with apical incrustations and/or septate 1-2 times; up to 60 x 9 .

Amanita fulva

mushroomexpert.com/Amanita_ful

Ecology: Mycorrhizal with hardwoods or conifers; growing alone, scattered, or gregariously; summer and fall; widely distributed east of the Rocky Mountains.

Cap: 4-10 cm; oval to convex, becoming broadly convex or nearly flat; sticky at first or when wet; tawny brown to brown; sometimes with a few scattered white to tawny patches; bald; the margin prominently lined or grooved.

Gills: Free from the stem or slightly attached to it; whitish; close or nearly crowded; short-gills infrequent.

Stem: 7-16 cm long; 0.5-1.5 cm thick; slightly tapered to apex; bald or slightly hairy; whitish to pale brownish; without a ring; the base enclosed in a sacklike, white volva that fits loosely around the stem and often discolors tawny brown.

Flesh: White throughout; soft; unchanging when sliced.

Odor: Not distinctive.

Chemical Reactions:KOH negative on cap surface.

Spore Print: White.

Microscopic Features: Spores 9-11 ; smooth; globose or subglobose; inamyloid. Basidia without clamps; 4-spored. Pileipellis an ixocutis of hyphae 2-6 wide. Lamellar trama bilateral; subhymenium ramose.

Gyromitra infula

mushroomexpert.com/Gyromitra_i

Ecology: Saprobic; growing alone, scattered, or gregariously on the well-decayed wood of conifers, or growing terrestrially near stumps and woody debris; widely distributed in North America but more common in northern and montane areas.

Cap: 2-13 cm high; 2-8 cm across; occasionally nearly cup-shaped when young, but soon becoming lobed with two prominently raised lobes (rarely with 3 or 4 lobes); bald; loosely wrinkled but usually not not brainlike; color extremely variable (tan to yellowish brown to reddish brown to dark brown); undersurface whitish to brownish, finely dusted, sometimes ingrown with stem where contact occurs.

Flesh: Thin and brittle; whitish to brownish; insubstantial or chambered.

Stem: 2-12 cm long; up to 3 cm thick; not ribbed; colored like the cap or paler; finely dusted; developing folds near the base.

Microscopic Features: Spores 17-24 x 7-11 ; narrowly ellipsoid; with two large oil droplets (sometimes with 1 or 3 droplets); smooth; without apiculi, or with slightly thickened (under 1 ) walls at the ends, creating the illusion of broad, very shallow apiculi (best seen with heated cotton blue). Asci 8-spored. Paraphyses capitate; 7-10 wide; with red granular contents.

Hydnum subtilior

mushroomexpert.com/Hydnum_subt

Ecology: Mycorrhizal with hardwoods; growing scattered or gregariously on the ground; summer and fall; distributed east of the Mississippi River from Illinois to the Carolinas, southward to Florida and Mexico. The illustrated and described collections are from Illinois.

Cap: 2-6 cm wide; broadly convex, becoming planoconvex; dry; soft and kid-leathery to the touch; becoming finely pocked; pale dull orange to nearly whitish.

Undersurface: Not running down the stem, or just beginning to do so; covered with densely packed, soft spines that are round in cross-section and measure 2-4 mm long; whitish creamy; not bruising.

Stem: 3-6 cm long; 1-2 cm thick; dry; bald; whitish; discoloring and staining pale yellow-orangish, then brownish orange.

Flesh: Whitish; slowly orangish to brownish orange when sliced; somewhat brittle.

Odor and Taste: Sweetish, not distinctive.

Chemical Reactions: KOH yellowish on cap surface. Iron salts negative on flesh, spines, and cap surface.

Microscopic Features: Spores 6-9 x 5-6.5 m; broadly ellipsoid, with an apiculus; smooth; hyaline in KOH. Basidia 2- and 4-sterigmate; 26-30 x 6-7 m; subclavate. Pseudocystidia 28-40 x 2-5 m; mostly cylindric with rounded apices, but occasionally fusiform or sublageniform; thin-walled; smooth; hyaline in KOH. Pileipellis not clearly differentiated; cap surface hyphae tangled, 2-4 m wide, ochraceous to golden in KOH, with clamp connections.

Kuehneromyces marginellus

mushroomexpert.com/Kuehneromyc

Ecology: Saprobic; growing alone, scattered, or in clusters on the well decayed wood of hardwoods (especially oaks and beech); late spring; originally described from New York (Peck 1898); widely distributed in North America east of the Great Plains. The illustrated and described collections are from Illinois.

Cap: 1-4 cm; convex or almost conical at first, becoming broadly convex or nearly flat; sticky when fresh; tan to snuff brown, fading markedly as it dries out and eventually becoming buff colored; bald.

Gills: Narrowly to broadly attached to the stem; close; short-gills frequent; whitish to yellowish or pale tan when young, becoming cinnamon brown; hygrophanous; at first covered by a whitish partial veil.

Stem: 2.5-7 cm long; 3-6 mm thick; equal or tapering slightly to base; dry; with an upward-flaring, whitish to pale tan ring that soon begins to collapse and develop a tawny brown edge; pale tan; bald or with inconspicuous fibrils just below the ring.

Flesh: Yellowish to pale brownish.

Odor and Taste: Not distinctive.

Chemical Reactions: KOH negative on cap surface.

Spore Print: Brown to cinnamon brown.

Microscopic Features: Spores 5.5-9 x 3.5-5 m; ellipsoid; with a pore 0.5-1 m wide; smooth; yellowish with brown walls in KOH; yellowish in Melzer's. Basidia 25-28 x 5-6 m; 4-sterigmate. Cheilocystidia 25-45 x 2.5-7.5 m; cylindric to clavate or lageniform; flexuous; often with subcapitate to capitate apices; hyaline in KOH; thin-walled; smooth. Pleurocystidia not found. Pileipellis an ixocutis; elements 2.5-10 m wide, smooth, hyaline to yellowish or golden in KOH.