Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Xylariales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Amphisphaerella petrakii

Amphisphaerella petrakii Mhaskar & V. G. Rao, Curr. Sci., 42:28. 1973.

 Description: Ascomsata solitary, scattered, immersed, compressed globose to broad conical, flattened at the base, with a short neck, 293-390 μm wide, 104-214 μm high. Peridium 9-20 μm thick, composed of several layers of thin-walled, yellow, elongated, compressed pseudoparenchymatous cells. Necks short, elliptical, 68-78 μm high, 29-53 μm wide, surrounded by a intra-subepidermal clypeus, and with an apical pore containing hyaline periphyses. Asci cylindrical, unitunicate, basal, 8-spored, with an amyloid ring, 117-140 × 12-18 μm. Paraphyses filamentous, broad and simpole. Ascospores dark brown, 1-celled, elliptical, with a pale brown band and equatorial germ pore on each side, 14-16 × 7-9 μm, mucilaginous sheath prominent.

Taiwan, Yilan, Ssuyuanakou, 20 Jan, 1992, NCHUPP-2275a.

 Habitat: On Rubus sp.

India, Taiwan.


Sivanaesan, A and Hsieh, WH.1989.


W. H. Hsieh

 Note: This species has been reported in India (Mhaskar & Rao, 1973) on Calamus and in Taiwan on Collinia (Sivanesan & Hsieh, 1989). Although known to occur on palms, it is the first report of occurrence on a host except for palms.