Hyphoderma clavatum is characterized by being resupinate, adnate, effused, smooth yellowish white to pale yellow basidiocarp, narrowly clavate to subcylindrical, capitate, and apically encrusted cystidia with ellipsoid basidiospores.
Basidiocarps resupinate, adnate, effused, up to 100 [micro]m thick in section; hymenial surface smooth, pruinose, grayish white when fresh, not changing much on drying; margins thinning, paler concolorous, to indeterminate.
Clavariachaetaceae, a family of neotropical Hymenochaetales (Basidiomycota) including clavarioid, pileate and resupinate
The macromorphology of the 24 specimens studied was variable, with 11 of the samples revealing a completely clavarioid form and the rest partially resupinate
or a more branched form caused by growth around a physical obstruction; both forms were seen even within a single collection (Figs.
Description.--Fruiting bodies: Resupinate
and overlapping with the edges forming elongated, narrow shelves up to 3.5 cm long; edges sharp and undulating.
Megasporoporia, a new genus of resupinate
Basidiomata up to 6 cm high, up to 2 cm broad, branched in 1-3 ranks, gregarious to densely cespitose, arising from extensive white to ivory-colored ("cartridge buff;" 30A2) resupinate
patches and rhizomorphs on well-rotted wood, off-white when young, slowly becoming fleshy tan, cinnamon to dull avellaneous ("avellaneous," "tilleul-buff," "cinnamon," "clay-color," "cinnamon-buff," "cream-buff;" 7B2-3, 6B4-5, 5C6).
Fungi II, Polyporaceae I (resupinate
) and Mucronoporaceae I (resupinate
Flowers small, showy, not resupinate
, ascending, sepals and petals greenish yellow with red spots towards the base, lip intense yellow with a large red spot at basal half, callus and claw red, column white at base, yellow at apex and with numerous red spots along the body.