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

Basionym: Dasyscypha pteridophylla Rodw. Pap. and Proc. Roy. Soc., Tasmania 1920: 158. 1921.

Lachnum pteridophyllum (Rodw.) Spooner, Bibl. Mycol. 116: 470. 1987.

Lachnum varians var. pteridophyllum (Rodw.) Sharma, Nova Hedwigia 43: 411. 1968.
   
 
 
 
 
　Description： Apothecia minute, 0.2-0.8 mm diam., growing singly or gregariously on dead petioles or rachis of fern, cup-shaped, stipitate, densely clothed with yellowish, buff, or white hairs bearing amber colored particles. Disc yellow, usually covered by cup margin in dry specimens. Stipe 0.2-0.5 mm long, also densely covered with hairs. Hairs to 64 × 1.9-2.5 mm, septate, pale buff-yellow with transmitted light, thin-walled, roughened with tightly adhering granules. Ectal and medullary excipulum are similar to that of L. flavidulum. Asci (37-)48-54 × 4.4-5.4 mm, cylindrical, with a narrowed base, J+. Ascospores (9-)12-14(-16.0) × 1.8-2.0 mm, fusiform, both ends narrowed to sharp points, nonseptate but often containing a row of guttules. Paraphyses lanceolate, with blunt apex, 1.3-2.2 mm, at the widest part, exceeding the asci by up to 10 mm in the hymenium.
 
 
 
 
 
　Specimens：

Taiwan, Yilan: Fushan Botanical Garden, alt. 500-900 m, on the tree fern of Gymnospharea podophylla and the fern of Histiopteris incisa, 23 Jan. 1995, Wu95-F1-Ⅱ-P1 (TMTC); 26 Apr. 1995, Wu95-F4-Ⅱ-P3 (TMTC); 27 Jul. 1995, Wu95-F7-Ⅱ-P1 (TMTC); 27 June 1996, Wu96-F6-Ⅱ-P1 (TMTC); 27 Apr. 1997, Wu97-F2-Ⅱ-P6 (TMTC); alt. 660m, on tree fern, 24 Nov. 1994, WAN097 (TNM F2707); 26 Apr. 1995, WAN126 (TNM F3083); 30 May 1995, WAN146 (TNM F3411). Yuanyanghu, alt. 1770m, on tree fern, 15 June 1995, WAN168 (TNM F3431). Nantou: Lienhuachih, alt. 700m, on tree fern, 4 May 1995, WAN137 (TNM F3094); 20 May 1995, WAN143 (TNM F3166).
 
 
 
　Habitat： Pteridicolous. On the tree fern of G. podophylla (Hook) Copel and the small fern of H. incisa (Thumb.) J. Sm.
 
 
 
　Distribution：

Australia, Colombia, Jamaica, Japan, Mexico, New Zealand, Papua New Guinea, Panama, Peru, Puerto Rico, Tasmania, Venezuela and Taiwan.
 
 
 
　References：

Wu, ML et al. 1998.
   
   
   
　Provided：

M. L. Wu
 
 
　Note： This species is common in Taiwan on the above mentioned hosts and perhaps other ferns. Lachnum pteridophyllum is indistinguishable from L. flavidulum macroscopically but is separated from the latter by its longer, bipolar, fusiform spores with pointed apices.