Systematic Arrangement of Species Included
Macroscopically, the genus Gymnopilus is characterized by usually lignicolous (saprophytic) fruiting bodies that are some shade of orange, tawny, red-brown, or yellow. Caps are dry or, less often, moist; never viscid. They may or may not have a veil; if they do, it may be fugacious, or it may leave an indistinct, or fibrillous, or membranous ring. Spores are bright ferruginous, orange, to yellow-brown in mass. Taste is usually bitter (terrestris and arenicola among exceptions). Microscopically, spores are rough surfaced, from very finely to distinctly warty, sometimes with warts connected by ridges, sometimes punctate, thick walled, lacking a germ pore or a plage. Gill edges are sterile, usually with prominent lageniform or fusiform and capitate cheilocystidia. Separated from Pholiota and other members of the Strophariaceae by the distinct spore ornamentation. Separated from Cortinarius by having brighter spore colors, and by the sterile gill edges. Separated from Galerina "by having the cap rarely striate, not hygrophanous and usually fleshier, and the thicker-walled spores, rather more strongly ornamented and usually lacking a hilar depression" (Orton). Galerina spores uniformly have a plage.
This key is an effort to sort out the Pacific Northwest species of Gymnopilus by means principally of macroscopic characters. Descriptions are derived (and abbreviated) mainly from Hesler's 1969 monograph and from Orton's contribution to the 1993 British Fungus Flora, Vol 7. For microscopic details (e.g. cystidia size & shape) you will have to use one of those (Hesler for most). Incidence of species in the PNW is derived (so far) from the Hesler work, from specimens as labeled in the Univ. of Washington herbarium (WA), and from very limited collecting. Several descriptions in Hesler, taken from Murrill or others, are incomplete. (WA) has more collections labeled "UNIDENT" than labeled with names.
Update (2019). The taxonomy of Gymnopilus in the Pacific Northwest has so far been spared the major changes affecting other genera from molecular research.
1a Average diameter of mature caps less than 3 cm
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1b Average diameter of mature caps 3 cm or more
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2a Cap colors yellow, buff, orange, red, brown, or some mixture thereof, without greenish or bluish tinges
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2b Cap essentially some color or mixture of colors as above but with tinges of bluish or greenish color, either innately or from bruising
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3a Cap with innate blue-green tinges (not as bruises)
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3b Cap without innate blue-green, but may stain or appear to stain so on bruising
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4a Veil lacking; stem long and slender (length up to 4x cap diam); gills adnate-sinuate or deeply emarginate; cap context when young reddish to light purplish
................................................................................Gymnopilus punctifolius
4b Veil present (when young); stem less slender (length up to 2x cap diam); gills adnexed-adnate, at first slightly decurrent, then seceding; cap context pallid, tinged greenish or bluish green
................................................................................Gymnopilus aeruginosus
5a (3b) Fruiting body uniformly ochraceous except for light reddish brown scales on cap (dense on disc); cap with large umbo, staining green where bruised, veil absent
................................................................................Gymnopilus viridans
CAP to 8 cm broad, convex, with umbo, ochraceous, becoming green spotted where bruised, dry, with conspicuous light reddish brown scales that are close together at disc and sparse otherwise. GILLS adnate, dingy brown to rust colored, broad, crowded, with undulate edges. STIPE thick (to 6 cm long x 2 cm diam), wider at base, concolorous. MICROSTRUCTURES spores (6-)7-8.5 x (4-)4.5-5 µ, not dextrinoid; cheilo- and caulocystidia; pileus trama interwoven. HABITAT cespitose on coniferous (burnt) log. NOTE A Murrill collection near Seattle, 1912; no recent record. Part of type collection in (WA)
5b Fruiting body not uniformly colored: at first dark red to reddish brown from dense fasciculate scales, then pinkish red, yellowish red, to yellow; cap without umbo, may stain or appear to stain light grayish green where bruised
................................................................................Gymnopilus luteofolius
6a (2a) Cap without veil
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6b Cap with veil
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7a On wood
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7b On soil or humus
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8a On soil or humus; cap 3-7(-10) cm, often broadly umbonate (young); color unchanging with bruising
................................................................................Gymnopilus terrestris
CAP 3-7(-10) cm broad, convex to subplane, umbonate when young; amber brown, orange brown, orange, or ferruginous, somewhat paler on drying, glabrous, moist or at times subviscid; margin thin and fragile. Context watery and concolorous, fading to warm buff. ODOR and TASTE mild(!). GILLS adnate to sinuate, often seceding; ochraceous-tawny, rusty brown, to ferruginous. STIPE (4-)6-12(-14) cm long, (3-)5-10(-13) mm thick; whitish or rusty brown to ferruginous, equal or base enlarged or tapering downward, glabrous, hollow. MICROSTRUCTURES spores (5-)5.5-7 x (4-)4.5-5.5(-6) µ; ellipsoid, to subglobose or ovoid in face view, dextrinoid (wait 1 hr.); pileo- and caulocystidia only; pileus trama radial. HABITAT Michigan to West Coast. NOTE (WA) has two collections: one from N. Calif. and one from Priest Lake, Idaho, 1986.
8b On humus; cap 1-5 cm, convex; gills and cap bruise brown
................................................................................Gymnopilus humicola
CAP 1-5 cm broad, convex, sometimes with wavy inrolled margin, pale orange-brown to dark reddish brown, minutely and densely squamulose, plush-like to the naked eye. Context yellowish. ODOR faint aromatic. GILLS adnate to decurrent, at first bright yellow, staining rusty or tawny where bruised, becoming yellow-ochre, eventually ferruginous. STIPE 2-9 cm long, 3-9 mm thick, pallid orange-buff to sordid-buff, staining brownish when bruised, especially at the base, appressed-fibrillose and striatulate, glabrous below scurfy apex, base often white-myceloid. MICROSTRUCTURES spores (6-)7-8.5(-9) x 4-5 µ, ellipsoid, a few subovoid; pleuro-, cheilo, pileo-, and caulocystidia. HABITAT (cespitose?); coniferous & deciduous woods, Mich., Ida., Tenn., Wash. NOTE (WA) has no collections so labeled.
9a (7a) Stipe thick and heavy (length ± 5 times diam); cheilocystia present; pleurocystidia, pileocystidia, and caulocystidia lacking
................................................................................Gymnopilus echinulisporus
CAP up to 7 cm broad, convex to plane, at length depressed, ± umbonate young; disc ferruginous, margin tawny (fulvous), glabrous, shining. Context not reported. GILLS sinuate-adnate with a tooth; light yellow-brown to tawny. STIPE about 6 cm long, 10-16 mm thick; whitish to concolorous with cap, striate, equal or base enlarged. MICROSTRUCTURES spores 6-8 x 5-6 µ, ellipsoid, ovoid or subglobose, verrucose, dextrinoid; cheilocystidia only, but "Cuticle of repent hyphae, at times some of the surface hyphae loosen and become semi-erect." Stipe may also have tufts of erect hyphae. HABITAT "On wood". NOTES A Murrill species from Oregon. (WA) has one collection by Stuntz from Lake Quinault, 1971; (determ: Hesler).
9b Stipe more slender ( length ± 10 times diam); cheilocystidia, pleurocystidia, and caulocystidia present; pileocystidia may or not be present
................................................................................10
10a Odor unremarkable; gills narrow, edges entire; pleurocystidia, cheilocystidia, and caulocystidia present
................................................................................Gymnopilus croceoluteus
CAP 3-8 cm broad, moist, hygrophanous, warm buff to tawny-orange, margin inrolled. GILLS adnate, decurrent by a tooth, yellow then rusty, sometimes spotted, crowded. STIPE 2-5 cm long, 2-7 mm thick at apex, pallid yellowish or orange-buff, dingy below, glabrous but fibrous-striate. MICROSTRUCTURES spores (6-5-)7-8.5(-9) x 4.5-5.5 µ, ellipsoid (sometimes broadly so), verruculose, at times conspicuously 1-guttulate; pileus trama loosely interwoven. Pleuro-, cheilo-, and caulocystidia. HABITAT on conifers, Mich., Fla., Idaho. NOTES macroscopically similar to G. liquiritiae, except for width of gills. (WA) has Stuntz collection from Mississippi.
10b Odor mild or slightly aromatic, fragrant or of raw potatoes; gills broad, edges fimbriate; pleurocystidia (inconspicuous), cheilocystidia, pileocystidia, and caulocystidia all present
................................................................................Gymnopilus liquiritiae
CAP 2-8 cm broad, convex then plane or subumbonate; "gold yellow to orange foxy" (Moser), disc often with minute, brown, waxy dots; not viscid, margin even, at length striatulate. Context pale orange to tawny-yellow ("whitish to yellowish" - Guzmán) GILLS adnate, then adnexed, seceding; at first ochraceous buff, to light orange-yellow, finally ochraceous orange, to ochraceous tawny, to zinc orange, at times reddish brown spotted; edges fimbriate. STIPE (1-)3-7 cm long, (2-)3-8(-10) mm thick, pallid or dingy orange, often eccentric, apex whitish or yellowish scurfy, tapering either way, "base white tomentose" (Moser) hollow. MICROSTRUCTURES spores 7-8.5(-10) x 4-5.5 µ; pleurocystidia (inconspicuous), cheilo-, pileo-, and caulocystidia. HABITAT subcespitose on conifer. NOTES Guzmán questions pileocystidia. (WA) has no collections so labeled.
11a (6b) Young caps dark red to reddish brown from dense fasciculate scales; cap context at first reddish, light purple vinaceous, or lavender, fading to yellowish
................................................................................See Gymnopilus luteofolius (5b)
11b Caps without dark red or purplish colors; scales, if any, yellow, orange-yellow, or tawny, and appressed; context of caps yellow or yellowish from start
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12a Cap medium to large (to 15 cm diam or more), with veil present when young; stipe without ring (but veil may leave evanescent zone of fibrils on stipe)
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12b Cap medium to very large, (to 30 cm diam or more), veil leaving membranous, submembranous, or lasting fibrillose ring on stipe
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13a Ring membranous, persistent, thick, margin jagged and remaining erect, fragments may cling to margin of some caps; gill attachment subsinuate; spores 7.5-9 x 4.5-5 µ
................................................................................Gymnopilus ventricosus
13b Ring membranous or submembranous, +/- persistent; gill attachment adnate to decurrent
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14a Cap usually large (8-40 [!] cm diam); stipe concolorous, often bulging below, but becoming more slender at base, sometimes "rooting" into substrate; spores (7-)8-10 x 4.5-5.5(-6) µ, ellipsoid to ovoid in face view
................................................................................Gymnopilus spectabilis (= G. junonius)
14b Cap smaller (5-8 cm diam); stipe whitish, usually equal but occasionally ventricose; spores (8.5)9-13 x (5-)6-7.5 µ, fusoid to sublimoniform in face view
................................................................................Gymnopilus subspectabilis
CAP pale yellowish tawny, closely appressed-fibrillose squamulose. Context yellowish, FeSO4 olive at gill line. GILLS adnate, deep yellow to light orange-brown,"clay color" to "tawny olive". STIPE 3.5-8 cm long, 8-14 mm thick, equal or rarely ventricose, whitish. VEIL forming a submembranous ring. MICROSTRUCTURES spores (8.5-)9-13 x (5-)6-7.5 µ, "cortinarioid" (Hesler), coarsely verrucose; pleuro-, cheilo- and caulocystidia (but note pileus cuticle has "repent hyphae, with bundles of brownish, ± erect or repent hyphae"- Hesler); pileus trama of loosely interwoven broad hyphae. HABITAT (cespitose?) on hardwood, Calif. & Mich. NOTE No collections so labeled in (WA).
15a (12a) Fruiting body large (cap 10-15 cm diam, stipe 7.5-10 cm long x 16-24 mm thick)
................................................................................Gymnopilus magnus
CAP 10-15 cm diam, broadly convex, pale yellow or buff, not viscid, fibrillose and ± virgate, margin becoming revolute with age. Context whitish or yellowish. GILLS adnate or slightly decurrent, "ochraceous at maturity (probably yellow when young)," often crisped and wavy toward the stipe. STIPE 7.5-10 cm long, 16-24 mm thick , concolorous, bright yellow within, equal or thicker at base, solid. VEIL arachnoid, fugacious. MICROSTRUCTURES spores 7.5-10 x 5.5-7 µ, (note approx 1.4:1 L/W aspect ratio), ellipsoid in face view, inequilateral or subamygdaliform in profile, rough-warty; cheilocystidia only; pileus trama interwoven. HABITAT cespitose, "about the base of trees", N.Y., Wash., Canada (B.C.) NOTE No collections so labeled in (WA).
15b Fruiting body smaller (cap normally <8 cm diam, some species occasionally to 10 cm)
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16a Cap rusty red or dark reddish brown
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16b Cap yellow, ochre, golden yellow, or light reddish orange or brown, etc.
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17a Cap fading with age to light rusty brown on disc and ochraceous buff on margin; cap context watery olive when young; gills rusty orange where bruised; veil white
................................................................................Gymnopilus aurantiophyllus
CAP 4-8 cm broad, dark rusty red, "burnt sienna" when young, inrolled margin, expanding to plane or with slight umbo, glabrous except margin at first with slight veil fragments; in age often with minute moist darker spots. Context yellowish when old. GILLS adnexed to subdecurrent, initially buff, staining rusty orange when bruised. STIPE 6-10 cm long, 5-8(12) mm thick, equal, pallid-orange-buff, at first paler with veil fibrils; base white-myceloid with numerous white rhizomorphs. VEIL white, fugacious or leaving faint evanescent zone. MICROSTRUCTURES spores 6.5-8.5 x 4-5 µ, ellipsoid; pleuro-, cheilo-, and caulocystidia; pileus trama radial. HABITAT cespitose on sawdust. NOTES described by Hesler from one collection (by A.H. Smith) on sawdust in Grants Pass, Oregon. (WA) has no collections so labeled.
17b Cap fading with age to orange; cap context concolorous with surface; gills not staining; veil yellowish
................................................................................Gymnopilus sordidostipes
CAP 4-10 cm broad, obtuse to convex, expanding to plane; rusty red, "Hay's Russet", fading to "ochraceous orange," cap minutely squamulose (lens). Context concolorous with surface. GILLS adnate to adnexed, yellowish orange. STIPE 4-10 cm long, 5-12 mm thick at apex; equal to clavate, ± concolorous with cap and darkening from base up, at first with orange-buff veil remnants. VEIL arachnoid, yellowish, leaving evanescent zone. MICROSTRUCTURES spores (5.5-)6.75 x 3.5-4.5 µ, ellipsoid, verruculose; pleuro-, cheilo, pileo-, and caulocystidia. (2 types of pileocystidia: [1] 13-24 x 5-7 µ, colorless, clavate, scattered, rare, and [2] 35-48 x 6-10 µ, clavate, brown, sometimes encrusted, often forming mounds. HABITAT cespitose on sawdust. NOTES also described by Hesler from collection by A.H. Smith, same date, same place, as G. aurantiophyllus. (WA) has no collections so labeled.
18a (16b) Cap "brown tomentose to fibrous-scaly on gold-yellow ground"; veil yellowish
................................................................................Gymnopilus sapineus
CAP (1-)3-5(-9) cm, hemispheric then plano-convex, golden yellow to tawny, paler on margin, "pale yellow-orange, pale orange, yellow, orange-brown, yellow brown, seldom reddish-brown" (Høiland). ODOR strong. GILLS adnate, "gold-yellow, damaged or old rust brown" (Moser) edges minutely fimbriate. STIPE 3-7 cm long, 4-7(-12) mm thick, glabrous, but innately fibrillose, uniformly yellowish except at base where brown when bruised, solid or stuffed, then hollow, equal or sub-attenuated downward. VEIL yellowish, scanty, sometimes remnants on cap margin, fugacious. MICROSTRUCTURES spores 7-9(-10) x 4-5.5 µ, verruculose, pleuro-, cheilo-, pileo- and caulocystidia; pileus trama radial. HABITAT subcespitose or gregarious to scattered on hard or coniferous wood or sawdust., ubiquitous U.S. and Europe. Reported from Europe on soil. NOTE (WA) has Stuntz collections Upper Snoqualmie Falls (1944) and Seattle.
18b Cap glabrous or with minutely appressed silky fibrils; veil white, whitish, or pallid
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19a Stipe white or pallid entire, not staining
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19b Stipe yellowish or whitish, but staining brown or developing orange, brown, rusty or tawny at base
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20a Gills at first yellowish, becoming rusty spotted; flesh whitish
................................................................................Gymnopilus penetrans
20b Gills not rusty spotted; flesh whitish
................................................................................Gymnopilus subsapineus
CAP 2-5 cm, convex, expanding, light orange-brown, "Mars Yellow". GILLS emarginate with decurrent tooth, yellowish [when young]. STIPE 4-6 cm long, 3-4 mm thick, white, silky-striate. VEIL pallid, arachnoid, fugacious, remnants on stipe. MICROSTRUCTURES spores 6-8.5 x 4.5-5 µ, ellipsoid, verruculose; pleuro- pileo-, and caulocystidia. (caulo- in distinct tufts); pileus trama radial. HABITAT (solitary or subcespitose?) on rotting wood, Ore. and Mich. NOTE (WA) has no collections so labeled.
21a (19b) Cap glabrous from start; odor indistinct or slightly raphanoid
................................................................................Gymnopilus flavidellus
CAP 2-5 cm, convex, expanding plane or slightly depressed, "ochraceous buff," melleous, "ochraceous orange," "antimony yellow" [R], margin paler, darker in age, hygrophanous. Context yellowish or pallid. ODOR not distinctive or slightly aromatic to raphanoid. GILLS adnate or sinuate with decurrent tooth, pale yellow to concolorous or ferruginous, sometimes stained or rust-spotted. STIPE 2-6 cm long, 2-6 mm thick, yellowish, usually staining brown (fulvous-brown), slightly fibrillose, equal or tapering downward, dark brown base, often white-myceloid, stuffed, then hollow. VEIL arachnoid, slight, pallid, fugacious. MICROSTRUCTURES spores 7-9 x 4-5.5 µ, verrucose to verruculose; pleuro-, cheilo-, pileo-, and caulocystidia (pileo- rare); pileus trama radial. HABITAT gregarious to subcespitose on deciduous or coniferous wood, most of temperate North America. (WA) has one specimen so labeled, from Michigan.
21b Cap at first silky-scaly, then smooth; odor faint to strong fungoid or "subnauseous"
................................................................................Gymnopilus hybridus
CAP 2-9 cm, convex, sometimes slightly umbonate or depressed in center, pale yellow orange or orange buff, soon with yellowish ochre or yellow-orange margin, then rust or rusty-tawny from center out, minute adpressed silky-scaly at first, then ± smooth, margin at first with whitish cortinal veil remnants; context concolorous. GILLS adnate with tooth or slightly emarginate; saffron, yellowish cream or yellowish ochre, then darker, crowded, edge paler and minutely flocculose-denticulate. STIPE 22-84cm x 2-10mm, ± equal; whitish or pale cream, then then light orange brown or rusty tawny from the base up; white silky striate or fibrillose silky streaky when old. VEIL cortina-like, sometimes leaving fugacious ring zone. MICROSTRUCTURES spores 7-9 x 4-5 µ, ellipsoid, punctate rough; cheilo- and caulocystidia; pleurocystidia "rare and inconspicuous" (Orton) or "rather conspicuous" (Hesler); pileus trama distinctly interwoven (Hesler). HABITAT single or cespitose on coniferous or deciduous wood; a European species--Hesler found no U.S. specimens, but looked at Swedish collections. NOTES above description mostly from Orton; (WA) has one collection, determ. by J.A.
22a (1a) On soil or humus
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22b On wood, chips, or sawdust
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23a On humus
................................................................................See G. humicola (8b)
23b On soil
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24a Cap and stipe medium to dark reddish brown, fading with age; stipe with grayish fibrils, with thin layer of brownish fibrils at base, and with evanescent zone at apex from veil; taste slowly bitterish
................................................................................Gymnopilus rufobrunneus
CAP 2-3 cm, convex expanding to plane or with a low umbo, dark reddish brown "Hays Russet" to dark rusty cinnamon, paler when old, glabrous, moist, hygrophanous; margin striate when moist. Context thin (color?). GILLS bluntly to depressed adnate, dark rusty cinnamon (when?), brighter than cap. STIPE 4-6 cm long, 2-2.5 mm thick, equal, fragile, dark rusty cinnamon all over in age, fibrils grayish, base with thin layer of brownish fibrils. VEIL leaves a faint, evanescent fibrillose zone near apex. MICROSTRUCTURES spores 7-9(-10) x 5-7 µ, ellipsoid or ovoid, verruculose; caulocystidia only. HABITAT cespitose on soil, Priest River, ID. NOTES Hesler described from one collection by A.H. Smith; (WA) has no collections so labeled.
24b Cap light orange brown; stipe dull brown, without grayish fibrils, veil lacking; odor and taste mild
................................................................................Gymnopilus arenicola
CAP 1.5-3 cm, obtuse, expanding to nearly plane or broadly umbonate, surface dull, unpolished or minutely fibrillose, "tawny" or "zinc orange", evenly colored or disc finally paler and yellowish. Context pallid. ODOR and TASTE mild. GILLS adnate to slightly adnexed, orange brown, "Burnt Sienna" at maturity, 2-3 tiers of lamellulae. STIPE 2-3 cm long, 1.5-2.5 mm thick, surface dull brown, equal, solid, ± fibrillose-striate, in age dingy all over but base not appreciably darker, brownish within. MICROSTRUCTURES spores 7-8 x 3.5-4.5 µ, ellipsoid, at times subfusoid, verruculose; pleuro-, cheilo-, and caulocystidia; pileus trama radial. HABITAT Hesler described from A.H. Smith collection found on sandy soil at Longmire, Washington. NOTE (WA) has no collections so labeled.
25a (22b) Cap notably moist and hygrophanous, margin and disc differing
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25b Cap dry, ± uniform and consistent color
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26a Cap orange-brown to reddish brown or reddish yellow, sometimes ± entirely orange or apricot (Orton); gills narrow, adnate-seceding, bright yellow, then dull yellow to rusty, edges often staining brown; spores small (see below)
................................................................................Gymnopilus bellulus
26b Cap dark brick red; gills broad, adnexed, yellow to pale yellow-orange, not staining; spores larger (see below)
................................................................................Gymnopilus oregonensis
CAP 1.5-2.5 cm, conic to hemispheric convex, not fully expanding, glabrous, dark brick red , margin concolorous. GILLS adnexed, cremous darkening to rusty red. STIPE 2-3 cm long, 3-5 mm thick, concolorous or slightly paler, whitish-pulverulent throught, ±glabrescent with age, equal, hollow. VEIL lacking. MICROSTRUCTURES spores 7.5-9 x 5-5.5 µ, minutely verrucose; pleuro- and cheilocystidia only. HABITAT fir log, Oregon. NOTES Murrill collection, 1911; no record since? (WA) has no collection so labeled. Guzmán-Dávalos says spores of type are truncate with large warts.
27a (25a) Cap reddish brown or dull red, fading on disc first; stipe concolorous with cap near base to paler orange buff above; spores non-dextrinoid
................................................................................Gymnopilus rufescens
CAP 1-1.5 cm, obtuse to convex, evenly dark orange-brown "Kaiser Brown", fading to paler reddish brown and fading first on disc, glabrous, moist, hygrophanous, margin opaque, very faintly striatulate. Context concolorous. GILLS deeply adnexed to nearly free, broad, bright pinkish cream "cinnamon buff" [R], spotted orange brown in some. STIPE 2-3 cm long, 1.5-2 mm thick, concolorous with cap below but paler orange-buff above, equal, apex faintly pruinose. MICROSTRUCTURES spores 4-5.5 x 2.5-3.5 µ, ellipsoid to ovoid, verruculose; pleuro- and cheilocystidia only. HABITAT On conifer wood; Hesler described from one collection by A.H. Smith, Prairie Creek Park, Calif. NOTE (WA) has no collection so labeled.
27b Cap reddish brown to chestnut, paler at margin; stipe umber and not concolorous with cap near base; spores dextrinoid
................................................................................Gymnopilus picreus? (see NOTES, below)
SYSTEMATIC ARRANGEMENT OF SPECIES INCLUDED
According to Hesler
SUBGENUS, SECTION, AND SPECIES | KEY ENTRIES |
SUBGENUS Annulati: | |
Veil forming a membranous to densely fibrillose, persistent annulus | |
G. spectabilis (Fr.) A.H. Smith | 14a |
G. ventricosus (Earle) Hesler | 13a |
G. subspectabilis Hesler | 14b |
= G. junonius (Fr.) P.D. Orton | |
SUBGENUS Gymnopilus: | |
Veil absent, or present and fugacious, not forming a persistent annulus | |
Section 1: Microspori: spores 3.5 to 7 µ long | |
G. bellulus (Peck) Murrill | 26a |
G. punctifolius (Peck) Singer | 4a |
G. rufescens Hesler | 27a |
G. sordidostipes Hesler | 17b |
G. terrestris Hesler | 8a |
Section 2: Gymnopilus: spores (6-)7-9 µ long | |
G. aeruginosus (Peck) Singer | 4b |
G. arenicola Hesler | 24b |
G. aurantiophyllus Hesler | 17a |
G. croceoluteus Hesler | 10a |
G. echinulisporus Murrill | 9a |
G. flavidellus Murrill | 21a |
G. humicola P.R. Harding ex Singer | 8b |
G. hybridus (Fr.:Fr.) Singer | 21b |
G. liquiritiae (Pers. ex Fr.) Karsten | 10b |
G. luteofolius (Peck) Singer | 5b |
G. magnus (Peck) Murrill | 15a |
G. oregonensis Murrill | 26b |
G. penetrans (Fr. ex Fr.) Murrill | 20a |
G. picreus (Fr.) P. Karst. | 27b |
G. rufobrunneus Hesler | 24a |
G. sapineus (Fr.) R. Maire | 18a |
G. subsapineus Hesler | 20b |
G. viridans Murrill | 5a |
- END -