Phylum：Ascomycota　>>　Class： Ascomycetes　>>　 Order： Helotiales 
   
 
　BCRC Number： NO BCRC Number!  
   
　Scientific Name： Lachnum taiwanense
 
   
   
　Author：

Lachnum taiwanense J. H. Haines, M. L. Wu & Y. Z. Wang, Mycotaxon 67: 341-353. 1998.
   
 
 
 
 
　Description： Apothecia scattered on stems of host, cup-shaped to funnel-shaped, 0.25-0.5 mm diam., covered with bright, white hairs, tipped with abundant crystalline masses, stipitate. Disc yellow, exposed when moist, or covered by the inrolled margin and hairs when dry. Stipe stout, buff-yellow, glabrous, central, equal to or longer than the diameter of the disc. Hairs up to100 × 3-4 mm, irregularly cylindrical, straight, septate, hyaline, thin- or thick-walled, fine-granulate, capped or interspersed with crystalline masses up to 12 mm across. Crystals not dissolving in 3% KOH or lactophenol. Subhymenium of interwoven hyphae. Ectal excipulum of light yellow, slightly thick-walled textura prismatica. Asci (28-)37-47(-59) × (2.5-)2.8-3.8(-5.0) mm, cylindrical with hemispherical apex and slightly tapered base. Ascospores (4.8-)5.0-6.4(-9.0) × (0.8-)1.0-1.4(-1.9) mm, enlarged and rounded at the apex, tapered and pointed at the base, non-septate, straight. Paraphyses lanceolate, with acute apices, unbranched, hyaline, 2.5-4.0 mm at the widest point, exceeding the asci by 15-25 mm in hymenium.
 
 
 
 
 
　Specimens：

Nantou: Lulinshan, alt. 2650 m, on dead stem of Polygonum cuspidatum Sieb. & Zucc., 13 June 1996, S. Z. Chen, WAN294 (TNM).
 
 
 
　Habitat： On stems of the dicotyledonous plant Polygonum cuspidatum Sieb. & Zucc., “Japanese bamboo” (Polygonaceae).
 
 
 
　Distribution：

Only reported from Taiwan.
 
 
 
　References：

Wu, ML et al. 1998.
   
   
   
　Provided：

M. L. Wu
 
 
　Note： Its name derives from the locality of its only known collection. Its combination of short spores enlarged at one end and thick- and thin- walled, hyaline hairs with crystalline masses is not found elsewhere in Lachnum. It bears a resemblance to the species of Lachnum in subgenus Capitotricha (Raitv.) Raitv. (=Dasyscypha Scetion Bicolores Dennis)., such as L. capitatum (Peck ex Thumen) Svrcek and D. sinegoricus Raitv., but the hair of L. taiwanense are narrower and less consistantly thick-walled. The Polygonum host is very widespread as a weed and it is possible that this saprophytic Lachnum will be found in other regions.