Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Dothideales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Acantharia chaetomoides

Acantharia chaetomoides W. H. Hsieh et al., Mycol. Res. 99: 917-919. 1995.

 Description: Mycelium superficial, epiphyllous, forming a circular patch up to 2 mm in diam. Ascomata pseudothecia seated on superficial mycelium, subglobose, gregarious, tuberculate, 300-425 μm diam., ostiolate, surrounded by thick-walled, septate, tufts of erect hyphae arising from the hypostroma. Peridium 25-40 μm thick, composed of 3-7 layers of thick-walled, dark brown cells, occasionally becoming thicker at the base. Tubercle 10-38 μm long, composed of one or more cells. Hypostroma crustose, subcuticular, continuous beneath the superficial mycelium, up to 35 μm high, hyaline in the lower part and dark brown in the upper region. Hamathecium consists of cellular pseudoparaphyses which are filiform, hyaline, septate, branched and anastomosing above asci. Asci fissitunicate, cylindric-clavate, short pedicellate, thick-walled, 8-spored, 125-175 × 25-35 μm. Ascospores broadly clavate to elliptical, pale brown, 21-26 × 9-13 μm, rounded at the upper end and pointed at the basal end, 1-septate in the middle or just above the middle, constricted at the septum.

Taiwan, Hsinchu, Kuanwau, 1 Apr. 1991, holotype IMI 361405 and isotype NCHUPP-2228.

 Habitat: On leaves of Cyclobalanopsidis morii, (Hay.) Schott.



Müller, E. and Arx, JA. von 1962; Sivanesan, A. 1984.


W. H. Hsieh

 Note: This species is typically venturiaceous in the characters of the ascomata, asci and ascospores, and is placed in Acantharia because of the superficial ascomata surrounded by a tuft of thick-walled setose hyphae and dark brown ascospores Species of Acantharia are found solely on members of Fagaceae (Müller & Arx,1962). Sivanesan (1984) recognized four species in this genus.