Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Dothideales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Sivanesania rubi

Sivanesania rubi W. H. Hsieh & C. Y. Chen, Mycol. Res. 98: 44-46. 1994.

 Description: Mycelia superficial. Ascostromata immersed, erumpent, subcuticular to subepidermal, slightly convex, cushion-shaped, scattered, multilocular, up to 15 mm across and 500 μm high. The ascostromatal wall is composed of dark brown, thick-walled, globose to polygonal, up to 25 μm wide pseudoparenchymatous cells which are compressed and longitudinally arranged in the lateral walls separating the locules. The outmost wall is composed of host and fungal tissues. Hyphae penetrate the underlying host cells beneath the ascostromata. Locules formed in a single row, globose to compressed globose, up to 210 μm wide, ostiolate. Ostiole central formed by distintegration of the apical cells. Pseudoparaphyses broadly filiform, hyaline, septate, branched, up to 2.5 μm thick. Asci 90-115 × 18-25 μm, fissitunicate, clavate,short-stalked, thick-walled, 8-spored, with a small ocular chamber sur-rounded by a thick ring at the apex. Ascospores 15-27.5 × 8-12.5 μm, irregularly biseriate in the ascus, ovoid, hyaline, granulose, guttulate, becoming non-granulose, eguttate and mid-brown with age, with a basal, cellular, hyaline, flexuous, simple, filiform appendage, 8-25 μm long.

Taiwan, Taitung County, Hsianyang, 10 May 1991, holotype IMI 356634 and isotype NCHUPP-2234.

 Habitat: Parasitic on stems and petioles of Rubus kawakamii Hay.



Barr, ME. 1987; Eriksson, OE and Hawksworth, DL. 1991a.


W. H. Hsieh

 Note: null