Search on : Taxa descriptions

 


   
Literature:
 
Page number:16 
Description type:Non-original description 
Description:ECHINODONTIUM TSUGICOLA (P. HENN. & SHIRAI) IMAZEKI, Jap. J. Bot. 11: 517. 1935.
Hydnofomes tsugicola P. HENN. & SHIRAI, Bot. Jb. 28: 267. 1901. Illustrations. Figures 12, 13, 14, and 20; see also IMAZEKI (1935), and ITO (1955).
Macroscopic. Basidiocarps (Figs. 12, 13 and 14) lignicolous, perennial, conchate to effused-reflexed, 2-3 imbricate, or solitary, 1-8 x 1-4 x 1-3 cm; upper surface Blackish Brown (3) to Sooty Black, undulating, zonate, rimose-rugose, texture bark-like; margin Saccardo's Umber, 2-3 mm wide, acute, undulating, pubescent, under surface warted and fertile; context Burnt Sienna to Mars Orange, woody, zonate (apparent with hand lens), 0.5-1 cm thick; hymenophore Light Buff, dentate; teeth scattered or adjacent, subulate, up to 1.5 cm long, 1-2 mm in diam, inner tissue Mars Orange, sometimes with a darker core of Burnt Sienna, apices acute to blunt and covered by hymenium.
Microscopic. Context hyphae of two types; skeletal hyphae (Fig. 20e) thick-walled to solid, 3.5-4.5 µm in diam, smooth, brown, turning maroon in KOH solution, rarely nodose-septate, rarely branched; generative hyphae (Fig. 20f) thin-walled, 3.5-4.5 µm in diam, hyaline, smooth, nodose-septate with some secondary simple septa, regularly branched; hyphae of the inner tissue of the teeth similar but frequently branched and frequently nodose-septate; hymenium hyaline; subhymenium stratified, up to 300 µm thick; cystidia (Fig. 20a) subulate to fusiform, 30-40 x 6-10 µm, upper portion incrusted, usually protruding up to 15 µm, originally thinwalled and hyaline, becoming thick-walled (Fig. 20b) and colored similar to skeletal hyphae; basidia (Fig. 20c) clavate, 20-30X 6-8 µm, 4-sterigmate; spores (Fig. 20d) ellipsoid, 5-7 x 4-6 µm, hyaline, strongly amyloid, minutely echinulate to smooth (usually some trace of echinulation visible under oil immersion).
Rot character. Undetermined.
Hosts. Tsuga diversifolia MAST., Tsuga sieboldii CARR., Abies firma SIEB. & ZUCC.
Range. Known from the Prefectures of Nagano and Tochigi. Specimens examined. TYPE-Nikko, Japan, on T. diversifolia, SHIRAI, 10, 1899 (S, TNS); JAPAN- Nikko, Tochigi, on T. diversifolia, AOSHIMA No. 93a, July 20, 1960 (BPI and SY-F).
Discussion. This species is very close to E. tinctorium. However, E. tsugicola has smaller basidiocarps, a harder context, and the teeth are more scattered. Microscopically, the spores of E. tsugicola are slightly smaller and the hyphae are more compactly interwoven. The fungus fruits at branch stubs.
 
Taxon name: