Phylum:Basidiomycota >> Class: Basidiomycetes >>  Order: Polyporales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Phanerochaete alba

Phanerochaete alba Lin et Chen, Taiwania 35: 97. 1990.

 Description: Macroscopic characters: Basidiocarps resupinate, widely effused, easily separable from the substrata and forming strongly recurved cracked margins when dry, 125–300 μm thick, 2–3 × 11–20 cm, membranaceous, even, smooth, irregularly cracked, shining or vernicose, silver white or pallid to light buff, not changing color in KOH; margins thining out, or clear cut, easily separable and reflexed when dry, silver white. Microscopic characters: Context with the differentiation of basal layer and intermediate layer; the thickening of the basidiocarps by repetitive context in 4 strata; basal layer of context up to 50 μm thick, composed of the parallel compact hyphae, without cystidia; intermediate layer 20–80 μm thick, composed of longitudinally interwoven hyphae; cystidia fusiform, encrusted, thick-walled, with rough crystals at the upper portions, broader at basal portions, embedded in intermediate layer and protruding at hymenial layer, protruding 15–30 μm high, 5–12.5 μm wide including crystals, 12.5–55 μm long, with crystals dissolved in 5% KOH, but the wall not dissolved, with thick wall up to 1.5–3 μm thick, pedicel narrow, 6–7 μm wide, thik-walled in 2–3 μm thickness, not radicate; hymenium 30 μm thick; paraphyses cylindrical, 3–5 μm wide; basidia clavate, 5–6 × 30 μm, with 2–4 basidiospores; sterigmata straight, 5 μm long; basidiospores ellipsoid, 3–4 × 4–5 μm, smooth, thin-walled, non-amyloid.

Taipei Hsien, Mt. Seven-star, on the road side, under the hardwood forests, alt. 700 m, Dec. 6, 1975, S.-H. Lin (Holotype: NTU-3407); Taichung city, campus of Tunghai University, in the yard of the house, on the dead and burned branches of Delonix regia (Bojer ex Hook.) Raf., alt. 300 m, Aug. 1, 1975, S.-H. Lin (NTU-2890); Taipei Hsien, Chungho Hsiang, Yuentong Temple, on the road side, under the hardwood forests, alt. 300 m, Nov. 28, 1975, S.-H. Lin (NTU-3902).

 Habitat: On the dead branches of the broad-leaved trees.



Lin, SH. and Chen, ZC. 1990.


S. H. Lin

 Note: So far as the cystidia is concerned, this new species may be confused with Phanero-chaete sordida (P. Karst.) J. Erikss. et Ryv. They do not seem to be distinctly different in shape, size and wall thickness of cystidia, especially when the crystals are restricted to the apex of cystidia. However, the macroscopic characters, e.g., the cystidial distribution, orientation of hyphae in context and the features of hyphae, are apparently different in both species. It is also very similar to Phanerochaete ravenelii Cooke. in many ways, but the present species can be distinguished from the latter by its cystidia covered with rough crystals, having parallel compact hyphae in basal layer of context and having white color in sections.