hymenium


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Related to hymenium: aplanospore, Mitospore, sterigmata

hymenium

(hī-mē′nē-əm)
n. pl. hyme·nia (-nē-ə) or hyme·niums
The spore-bearing layer of the fruiting body of certain fungi, containing asci or basidia.

hy·me′ni·al (-əl) adj.

hymenium

a layer of spore-producing structures present in the fruiting body of fungi of the BASIDIOMYCOTA and ASCOMYCOTA.
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References in periodicals archive ?
We found only three species with transversely septate ascospores, inspersed hymenium, dark brown to carbonized excipulum, and stictic acid chemistry.
Hymenium: Gills, slightly decurrent, well separated, varying from narrow to broad, white initially, becoming pinkish-brown with age.
Hymenium: Gills, attached or free, distant, broad, white to pale yellow.
Hymenium: Gills, adnate, close to subdistant, moderately broad, white becoming pale pink to brown with age.
Hymenium: Gills, attached to sinuate, crowded, broad, orange; gill edges bright orange-red.
Hymenium: Gills, crowded, narrow, pinkish-buff to tan.
Hymenium: Gills, attached, close, broad, veined, pink.
Basidiomata up to 6 X 3 cm, branched, gregarious; stipe up to 3 X 1.2 cm, irregular in cross-section, usually matted with hyphal layer identical to subiculum; branches in 1-5 ranks, irregularly dichotomous, ascending, flexuous, often covered with subicular-like layer downward, gray-drab, tandrab to pinkish tan ("avellaneous" "light pinkish cinnamon," "fawn color;" 7A2, 7B3, 7C5); hymenium amphigenous above, often clearly unilateral below; internodes diminishing irregularly upward; axils narrowly rounded.
Hymenium thickened significantly; basidia 40-50 X 7-9 [micro]m, clavate, clamped; contents homogeneous at all ages; sterigmata 4, up to 7 [micro]m long, slender, slightly incurved.
As noted by Corner (1950, 1970), basidiospores are strangely rare in the hymenium of herbarium specimens, although adequate spores are shed to give a spore print within a few hours.
Hymenium often unilateral, with off-white sterile surface decurrent from axils; axils lunate below, narrowly rounded above; branches in up to six ranks, terete to flattened below, terete above, sympodial to dichotomous throughout.
Hymenium thickened significantly; basidia 48-55 X 7-8.5 [micro]m, clavate to narrowly sphaeropedunculate, clamped; contents multiguttulate to multigranular at maturity, the guttules/granules yellow-refringent; sterigmata 4, up to 8 [micro]m long, slender, straight, spindly; filiform hyphal tips occasionally exerted from hymenium (TENN 43721; Desjardin 4773).