Summary:
Features include stemless growth on aspen, a yellowish brown upper surface that is tomentose at first, yellowish brown flesh with a hard granular core that has flecks of white tissue, a yellowish brown pore surface, and microscopic characters including the absence of setae.
Inocutis rheades has been found in BC, ID, NB, NS, NWT, PQ, MN, and MT, (Gilbertson), and Europe, (Breitenbach).
Cap:
up to 5cm x 8cm x 2cm, bracket-like or bent outward to form shelf-like cap from pore surface growing flat on wood, margin often thin and curled down, annual; upper surface pale yellowish brown becoming black when old, margin colored the same; tomentose becoming bald when old, (Gilbertson), bracket-like, 4-10(15)cm along wood, projecting 2-6(9)cm, "slightly undulating to slightly convex"; "yellow-orange to orange-fox-red, red-brown when old"; tomentose, velvety, not zoned or indistinctly zoned; margin sharp and wavy, (Breitenbach)
Flesh:
"bright yellowish brown, lustrous, becoming darker and rusty brown, faintly zonate, with a hard granular core composed of brown tissue with flecks of white tissue mixed through it, fibrous context sometimes duplex, entire context up to 2cm thick", (Gilbertson), 0.5-2cm thick, soft, fibrous, succulent; red-brown; mycelial core with whitish marbling, (Breitenbach)
Pores:
2-4 per mm, angular, with walls that become thin and torn; pale yellowish brown becoming dark reddish brown when old; tube layer up to 1cm thick, distinct, colored as fibrous context, (Gilbertson), 2-3(4) per mm, angular, some labyrinthine [maze-like], surface convex; cream to light yellow, later ocher to brown, iridescent; tube layer 0.5-1(1.5)cm thick, (Breitenbach)
Microscopic:
spores 5-6 x 3.5-4 microns, oval to broadly elliptic, often flattened on one side, smooth, inamyloid, pale golden brown; basidia 4-spored, 14-16 x 5-6 microns, clavate, simple-septate at base; setae or other sterile hymenial elements absent; context hyphae from fibrous context of two types, some 3-7 microns wide, "pale yellowish and thin-walled to dark reddish brown and thick-walled, simple-septate, rarely branched, with parallel arrangement", these bound together by hyphae 2-4 microns wide that are pale to dark brown, much branched, thin-walled to thick-walled, simple-septate, trama hyphae similar to those of fibrous context, mostly pale brownish and thin-walled, 3-6 microns wide, hyphae of granular core of two types: some 2-3 microns wide, pale yellowish, much branched, simple-septate, and others up to 10 microns wide, dark reddish brown, thick-walled, contorted or lobed, (Gilbertson), spores 6-7.5(8) x 3.5-4.5 microns, elliptic, smooth, brown, thick-walled, (Breitenbach)
Spore Deposit:
rusty brown (Gilbertson)
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