Name: Ganoderma multicorne
Citation: Mycologia 92 (1): 184 (2000) [MB#505875]
Deprecated Synonyms: Ganoderma multicornum Ryvarden
Collected by : Samuels
Collection date : apr 1984
Country (state) :
Location details : Venezuela
Substrate details : wood of dead angiospermous tree
Status : Holotype
Remarks (internal) : This is a beautiful species by its deep bay shiny strongly zonate pileus and straw coloured pore surface. The apical antler-like and strongly amyloid cuticle cells make this a very distinct species microscopically.
Description type : Non-original description
Description : Ganoderma multicornis Ryvarden,
Mycologia 92:184, 2000.
Basidiocarps perennial, sessile with a slightly contacted base, pile semi-circular, up to 7 cm in diameter and about 2 cm thick at the attachment, upper surface convex, strongly sulcate in numerous narrow zones, glabrous, probably shiny when fresh, subshiny when dry, laccate, deep bay to almost black,
pore surface pale straw when dry, probably paler when fresh, pores small, not visible to the naked eye, round, in the type 5- 6 per mm, pore walls of same thickness as the pore diameter, tubes pale brown, up to 12 mm deep at the base, not stratified, context duplex in colour, lower part dark brown, the upper part ochraceous, up to 10 mm thick at the base and there with black dense resinous bands, in parts broken, penetrating up to 3 cm horizontally into the context.
Hyphal system dimitic; generative hyphae hyaline, thin-walled, with clamps, 2-3 ?m in diam, difficult to observe in dried specimens; skeletal hyphae hyaline to pale yellowish brown, thick-walled, unbranched to sparingly arboriform and then with a long unbranched basal part and with a moderately, mostly dichotomously branching in the upper part, 5-10 ?m in diam in the unbranched part, ending in whip like apices.
Cuticle a palisade of club shaped cells, with scattered small protuberances in the lower part, apically antler-like branched, yellowish brown in KOH, thick-walled to solid and strongly amyloid, 20-50 × 6-18 ?m, but presumably longer as they look like skeletal hyphae where the apical branching have been strongly contracted.
Basidia barrel-shaped, only few seen, 16-24 × 12-15 ?m with 4 sterigmata.
Basidiospores ellipsoid, finely echinulate, pale brown, 10-12 (13) x 7-8 (8.5) ?m.
Substrata. From dead hardwood.
Distribution. Only known from the type locality in Venezuela, Amazona, Dpto Rio Negro, Rio Mawarinuma. http://www.mycobank.org/...
Created: 2015-01-03 01:30:38 CST (-0500) by Erlon Bailey (Herbert Baker)
Last modified: 2018-04-03 16:23:09 CDT (-0400) by Erlon Bailey (Herbert Baker)
Viewed: 33 times, last viewed: 2020-06-18 15:23:05 CDT (-0400)