Phylum：Basidiomycota　>>　Class： Basidiomycetes　>>　 Order： Phallales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Hyphodontia microspora
 
   
   
　Author：

Hyphodontia microspora J. Erikss. & Hjortstam, Cort. N. Eur. 4: 651. 1976.
   
 
 
 
 
　Description： Basidiocarp effuse, adnate, porose-reticulate to loose-membranaceous, 50-100 μm thick in section (aculei excluded). Hymenial surface Warm Buff, odontioid, not cracked; margin concolorous, thinning, arachnoid. Aculei usually separate, ca. 7 per mm, subulate, small. Hyphal system monomitic; hyphae nodose-septate. Subiculum uniform, composed of medullary layer, with rather loose texture; hyphae ± vertical, richly ramified, somewhat interwoven, colorless, distinct, 1.3-2.8 μm diam., thin- or slightly thick-walled. Hymenial layer with dense texture. Trama with dense texture, full of yellow excreted material, which dissolves in KOH. Cystidia numerous, concentrated in aculei, scattered elsewhere, ± projecting, tubular, sometimes slightly constricted near apices, apically covered with yellowish excreted material, 60-150 × 5-9 μm, with 0.6-2 μm thick walls, apically thin-walled. Basidia utriform, 10-14 × 3.5-4.5 μm, 4-sterigmate. Basidiospores ellipsoid or narrowly ellipsoid, adaxially flattened or slightly concave, smooth, thin-walled, 3.8-4.5 × 1.8-2.2 μm, IKI-, CB-.
 
 
 
 
 
　Specimens：

Taipei, National Taiwan University, on wooden board, 30 Dec 1987, Wu 071230-2 (H, TNM).
 
 
 
　Habitat： null
 
 
 
　Distribution：

Sweden, U.S.A., Japan, Taiwan.
 
 
 
　References：

Wu, SH. 1990.
   
   
   
　Provided：

S. H. Wu
 
 
　Note： Since the find of the type specimen in Scandinavia, this species had been reported only from the U.S.A., by Gilbertson and Blackwell (1988). One of their collections was confirmed by Dr. Kurt Hjortstam to be identical with the Swedish specimen. But according to the original description, the basidiospores of H. microspora (2.5-3.5 × 1.5-1.8 μm; Eriksson & Ryvarden 1976: 651) are very different from those of the North American collections (4-4.5 × 1.5-2 μm: Gilbertson & Blackwell, 1988). The spore size of my Taiwanese collection (3.8-4.5 × 1.8-2.2 μm) fits with the North American collections. After having examined the type specimen of H. microspora, I can only suspect a mistake in the original description, because my measurement of its basidiospores gave 3.7-4.3 × 1.8-2.1 μm, corresponding very well with the spore dimensions of the North American and Tai-wanese collections.