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Page number:161 
Description type:Non-original description 
Description:Asterotus dealbatus (Berk.) SÀ­nger Figure 40 Mycologia 35 (1943) 160-161.
Stipitate pleuropodal erect, firmly subgelatinous. Pileus -2.5 cm in radius, 4 cm wide, spathulate then reniform-flabelliform, smooth, striate and fuliginous grey when moist, drying greyish white and opaque; margin entire, smooth, incurved at first. Stem 3-4 cm x 3-3.5 mm, lateral, fibrous, subgelatinous, concolorous, drying minutely white villous, base abrupt. Gills shortly decurrent or adnatodecurrent, rather crowded, regular, 13-18 primaries 1.5-2.5 mm wide, 4-5 ranks, waxy-firm, greyish white, drying blackish umber (not turning green in potash), edge entire. Flesh c. 0.5 mm thick at the base of the pileus, firmly subgelatinous, hygrophanous, concolorous. Smell strong, farinaceous.
On a log in the forest. Brazil, Manaus, Corner s.n. 17 Oct. 1948. Spores 6.5-8 x 2.5-3 µm, white, smooth, cylindric, slightly curved, thin-walled, inamyloid. Basidia 23-28 x 4.5-5.5 µm, with toughly mucilaginous walls. Cystidia none, but with narrow 1-2 µm hyphae between the Basidia (? young Basidia). Gill-edge sterile in a broad strip composed of radiating (not descending) toughly subgelatinous hyphae 1-2 µm wide.
Hyphae monomitic, clamped, 1-3 µm wide, with toughly subgelatinous walls, not diffluent though swelling in potash, contiguous, adherent; below the surface of the stem and in the gill-trama -5 µm wide with slightly firmer walls; longitudinal, little interwoven, descending in the gills except for the marginal strip; no air-spaces.
Surface of stem and pileus with a very dense villous layer, 40-70 µm thick on the pileus, -150 µm thick on the stem, composed of very narrow, profusely, shortly, and spicately branched hyphae 0.5-1 µm wide, with thickened walls, arising from a narrow layer of hyphae with firm (not gelatinous) walls; no pileocystidia; no yellow-brown colour with alkali.
This is my description of a Brazilian collection which seems to be A. dealbatus, though Singer (1975) attributes no true stem to it. Asterotus has been reduced by Singer (1975) to a subgenus of Resupinatus, though this Brazilian fungus is not resupinate. The construction of the gill-trama is peculiar and needs investigation from young specimens to ascertain if it is initially radiate, as it seems to be.
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