Stereum pusiolum Berk. & M.A. Curtis
Details
Stereum pusiolum Berk. & M.A. Curtis
Nomenclature
Berk. & M.A. Curtis
Berk. & M.A. Curtis
ICN
Stereum pusiolum Berk. & M.A. Curtis
species
Stereum pusiolum
Classification
Descriptions
Stereum pusiolum Berk. & M.A. Curtis
ON SOIL. Auckland, Northcote Kauri Park, 120 m; Cascade Kauri Park, Waitakere Ranges, 300 m; Cutty Grass Road, Waitakere Ranges; 300 m; Huia Filters, 200 m; Oratia, 180 m; Mountain Road, Henderson Valley, 200 m; Atkinson Park, Titirangi, 250 m; Moumoukai Valley, Hunua Ranges, 300 m; Konini Stream, Moumoukai Valley, 130 m; Purewa Bush, 30 m; Clevedon, 50 m; Whitianga Road, Coromandel Peninsula, 400 m.
Hymenophore stipitate, annual, coriaceous, seldom solitary, usually gregarious. Pilei spatulate, cuneiform, narrowly flabelliform, sometimes rosetted or as often torn into few or several lobes, 5-17 mm tall, 1-15 mm wide; pileus surface radiately sulcate, sometimes toothed along ridges and margins, or bearing subsidiary pilei, silky or glabrous, isabelline, straw colour with bay margins, or concolorous; margins acute, dentate, or lacerate; hymenial surface sulcate, even, where fertile drab-brown or pallid fuscous, with a broad sterile bay margin. Stems arising from a mycelial bulb, 1-5 mm long, 0.5-1 mm thick, naked, concolorous with the hymenium. Context 0.4-0.8 mm thick, wood colour or light brown, composed of radiately arranged parallel hyphae; generative hyphae 2.5-3 µm diameter, walls 0.5 µm thick, naked, with clamp connections. Gloeocystidia arising from the base of the subhymenium, scarcely projecting, flexuous-cylindrical or cylindric-clavate, former to 80 x 8 µm, latter to 30 x 12 µm, when young filled with refractive, granular, pallid brown contents, giving to the zone a discoloured appearance. Hymenial layer to 70 µm deep, a dense palisade of basidia, paraphyses, and gloeocystidia. Basidia subclavate, 26-45 x 7-9 µm, bearing 2-4 spores; sterigmata slender, erect, to 8 µm long. Paraphyses subclavate, 16-30 x 5-6 µm. Spores subglobose or pip-shaped, apiculate, 4.5-6 x 4-4.5 µm, walls smooth, hyaline, 0.5 µm thick.
DISTRIBUTION: West Indies, Central America, New Zealand.
HABITAT: Growing on soil, usually gregarious.
Collections agree in microfeatures with type specimens examined in Kew herbarium. These consist of eight small plants, ex "Cuba, C. Wright, No. 510" and are smaller than typical collections from New Zealand. Plants vary in size, shape, and colour. They are constant as to habitat, contrasting colours of surface and hymenium, monomitic hyphal system with clamp connections in generative hyphae, small subglobose spores, and presence of gloeocystidia with coloured contents. Welden (1954, p. 431) thought the species so closely resembled S. radicans (Berk.) Burt that it might be regarded as a variety. Judging from Lloyd's descriptions and figures, it is probable that S. cuneoforme Lloyd, S. grandi Lloyd, and S. multifidum Lloyd are synonyms.
TYPE LOCALITY: Cuba.
Taxonomic concepts
Stereum pusiolum Berk. & M.A. Curtis
Stereum pusiolum Berk. & M.A. Curtis
Stereum pusiolum Berk. & M.A. Curtis
Stereum pusiolum Berk. & M.A. Curtis
Global name resources
Collections
Metadata
1cb1a5f1-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
7 July 1998
16 July 2012