Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Diaporthales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Ophiovalsa femoralis

Basionym:Valsa femoralis Peck, Rept. N. Y. St. Mus. 28:74. 1876.

Ophiovalsa femoralis (Peck) Petr., Sydowia 19: 271. 1966.

 Description: Perithecia immersed, subglobose with a long neck, 273-351 μm wide, 234-468 μm high not including the neck, in circular clusters, lying horizontal with their necks converging at the center forming indistinct ectostroma with convergent necks, and forming raised pustules on host surface. Neck cylindric, 507-741 μm high, 140-234 μm wide, periphysate. Wall of perithecia two-layered, 29-39 μm thick, outer layer composed of dark, slightly compressed, thick-walled, 3-4-layered cells. Asci, unitunicate, obovoid to broadly ellipsoidal, 8-spored, 53-66 × 16-22 μm, loosening from ascogenous cells early. Ascospores fasciculate, cylindrical, like a femur, broader at both ends, hyaline, 1-celled, 31-55 μm long 5-7 μm wide at both ends and 4-5 μm at narrower part.

Taiwan, Hualien County, Kuanyuan, 21 Mar. 1992, NCHUPP-2272.

 Habitat: On Alnus formosana (Burk.) Makino.

North America, Japan and Taiwan.


Chen, CY. and Hsieh, WH. 1994; Kobayashi, T. 1969.


W. H. Hsieh

 Note: The species reported from America (Höhnel, 1918) usually has unicellular ascospores. In Japanese specimens (Kobayashi, 1969) the ascospores are either unicellular of one septate. The ascospores of the specimens from Taiwan are all aseptate.