 Phylum： >> Class： >> Order： |
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 BCRC Number： |
NO BCRC Number!
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| Scientific Name： |
Xenasma tulasnelloideum |
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| Author： |
Xenasma tulasnelloideum (Höhn. et Litsch.) Donk, Fungus 27: 26. 1957.
Corticium tulasnelloideum Höhn. et Lietsch., K. Akad. Wissensch. Wien 117: 1118. 1908.
Hypochnus tulanelloideum (Höhn. et Litsch.) Rea, Trans. Brit. Mycol. Soc. 12: 222. 1927.
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| Description： |
Macroscopic characters: Basidiocarps resupinate, widely effused, closely adnate, thin, 30–70 μm thick, 7 × 20 cm, ceraceous-gelatinous, smooth, even, not cracked, pale olive gray, pearl gray, lilac gray or white when dry, turning black color in 5% KOH; margins thining out, pruinose, concolorous.
Microscopic characters: Without differentiation of basal and intermediate layer of context; context about 15–55 μm thick, composed of gelatinized interwoven hyphae, opaque, indis-tinct; hyphae 2–3 μm wide, thin-walled, septate, without clamp connections, gelatinized; hymenium 15 μm thick, gelatinized with context at the lower half ; basidia clavate or cylin-drical, thin-walled, with 2–4 basidiospores; sterigmata 1.5 μm wide at base, 5 μm long, curved; basidiospores broadly ellipsoid to subglobose, rarely triangular, 3.5–4 × 4.5–6 μm, distinctly echinate, thin-walled, amyloid. |
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| Specimens： |
Taipei Hsien, Wulai Hsiang, Doll Valley, on the road side, under the hardwood forests, alt. 300 m, Dec. 25, 1975, S.-H. Lin (NTU-4301). |
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| Habitat： |
On the dead stems of the broad-leaved trees. |
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| Distribution： |
Europe, Great Britain, North America, Australia, New Zealand and Taiwan. |
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| References： |
Lin, SH. and Chen, ZC. 1990.
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| Provided： |
S. H. Lin
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| Note： |
The pale olive-gray fructifications, waxy-gelatinous context and the echinate spores are the diagnostic characters of the species. |
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