Lentinus pulvinulus Berk. 1859 [1860]
Details
Lentinus pulvinulus Berk. 1859 [1860]
Nomenclature
Berk.
Berk.
1859
1860
250
ICN
Lentinus pulvinulus Berk. 1859 [1860]
species
Lentinus pulvinulus
Classification
Descriptions
Lentinus pulvinulus Berk. 1859 [1860]
Berkeley (1860) described the type material of L. pulvinulus (Tasmania: on rotten wood, Archer, K) as being "1/3--1 inch across or resupinate, laterally attached [? should read "resupinate or laterally attached"], remarkably convex, smooth, ochraceous; margin sulcate. Gills very broad, yellowish, farinaceous; edge entire". His figure shows a laterally attached, distinctly convex basidioma, with four series of lamellae with apparently smooth margins. Berkeley based his description on a collection of three basidiomata, only one of which has survived. This is glued to the mounting sheet by the dorsal surface, but the lamellae appear to radiate from a lateral point, suggesting it was attached laterally. Both pileus and lamellae are clay buff (5C4, K&W). The margin of the pileus when dried is radially grooved. The lamellae are relatively broad but most of them are damaged such that the margins are missing, hence Berkeley's "edge entire". However, a careful examination showed one very small portion of one lamella with an intact, distinctly dentate to lacerate edge. Pegler (1965) described the type specimen as having "spores 5.7-8 x 4.5-5 µm, hyaline, ellipsoid, sometimes flattened on the adaxial side, strongly amyloid with exosporial ornamentation varying from slightly roughened to occasionally distinctly punctate. This ornamentation is seen only when the spores are mounted in Melzer's reagent. Cystidia absent. Basidia clavate, 13-18 x 4.5-7.5 µm, bearing 4 sterigmata. The hyphae are thickwalled, hyaline, and with clamp connections. In the context, gill trama, and subhymenium there are numerous oleiferous hyphae which occasionally penetrate the hymenium." Features of the holotype not mentioned by Pegler (1965) are the very contorted, arboriform, thick-walled hyphae in the trama, 5 - 8 µm diam., wall at least 2 µm thick, more or less parallel with thin-walled and oleiferous hyphae 5 - 6 µm diam. The context also consists of thick- and thin-walled interwoven hyphae mixed with oleiferous hyphae. The pileipellis consists of a few layers of narrow, repent hyphae showing slight banding on the walls. Swollen, clavate, sometimes thickwalled pseudocystidia up to 60 x 12 µm occasionally emerge through the pileipellis, which may also bear long, narrow, slightly thickened hairs 4 µm diam., aseptate or more usually with one clamped septum. The damage to the lamellar margin prevented observations on marginal leptocystidia. No facial leptocystidia were observed. Spores measured 5.5-7.0 x 4.0 -5.0 (6.3 x 4.6) µm, Q = 1.36.
Taxonomic concepts
Global name resources
Notes
typification
Type Australia, Tasmania
Metadata
1cb1be6c-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
1 January 2001
12 October 2004