Name: Humphreya coffeata
Author: (Berk.) Steyaert
Citation: [as ‘coffeatum’], Persoonia 7(1): 102 (1972)
Preferred Synonyms:Cristataspora coffeata (Berk.) Robledo, Costa-Rezende & de Madrignac Bonzi
Ryvarden, L. 2004. Neotropical Polypores. Part 1. Introduction, Hymenochaetaceae and Ganodermataceae. Synopsis Fungorum. 19:1-227
Page number : 77
Remarks (internal) : The species is easy to recognize by its white to yellow pore surface, white context and the fairly large, reticulated basidiospores. In the field it may be mistaken by an Amauroderma or Ganoderma species, but the irregularly ornamented spores will be diagnostic.
Description type : Non-original description
Description : Humphreya coffeatum (Berk.) Steyaert,
Persoonia 7:102, 1972. – Polyporus coffeatum Berk., Ann. Mag. Nat. Hist. 3:385, 1839.
Basidiocarps annual, more or less centrally stipitate, often pleuropodial, pileus up to 15 cm in diam, flat to convex, first velutinate with alternating velutinate to pubescent and glabrous zones, becoming glabrous with age, dull, undulating, usually with concentric zones, central part dark brown, paler towards the margin and cinnamon brown, margin thick and with furrows or groves, pore surface citric yellow to pale whitish yellow when fresh, drying wood-coloured, bright yellow or straw-coloured, pores round, 4-6 per mm; tubes concolorous, up to 10 mm deep, context white becoming cream coloured, 4-10 mm thick in the centre of the pileus and with a cuticle, up to 100 ?m thick.
Stipe usually lateral, up to 10 cm high and 8-15 mm in diam, base often slightly swollen, dark brown, dull and glabrous with a distinct dark cuticle, 100-300 ?m thick, context of stipe as in pileus.
Hyphal system dimitic; generative hyphae with clamps, hyaline, thin-walled, branched, 2-7 ?m wide, skeletal hyphae terminal arboriform, hyaline, 4-6 ?m wide, in the cuticle on the pileus and stipe embedded in a dark substance that dissolves in KOH, surface of pileus with irregularly aggregated hyaline hyphal ends, both of skeletal and generative origin.
Basidia barrel-shaped, 4-sterigmate, 12-16 × 8-10 ?m, with a basal clamp.
Basidiospores ellipsoid, pale brown, truncate, covered with short traverse ridges in a reticulate pattern, negative in Melzer’s reagent, 10-11 × 6-8 ?m.
Substrata. Known from dead wood of deciduous trees.
Distribution. Neotropical species, known from Brazil and Bolivia and to Cuba and Puerto Rico in the north.