Phylum:Ascomycota >> Class: Ascomycetes >>  Order: Pezizales 
 BCRC Number NO BCRC Number!  
 Scientific Name: Ascobolus carbonarius

Ascobolus carbonarius P. Karst., Notis. Sallsk. Fauna Fl. Forh. II: 202. 1870.

 Description: Apothecia scattered, 2-3 mm wide, sessile, discoid, with a short base, receptacle dark brown, bottom entangled with brown, thick-walled hyphae, 3-5 μm wide, disc greenish brown, dotted with protruding asci. Excipulum of a textura globulosa, cells 8-20 μm wide. Asci clavate, 245-250 × 15-21 μm, walls not turning to blue in Melzer's reagent. Ascospores broadly ellipsoid, 19-23 × 13-15 μm, including warts, 16-18 × 10-11 μm without ornamentation, purplish brown, warty; warts irregularly shaped, 1-2 × 1-3 μm. Paraphyses filiform, septate, tips 2-3 μm, branched near the base, rarely enlarged at the tips up to 5 μm, embedded in greenish brown mucus.

Taiwan, Nantou: Meifeng, on burnt charcoal, 14 June 1995, Y.Z. Wang, WAN 160 (TNM F3423); Nantou: Meifeng, on burnt log, 3 Dec. 1998, Y.Z. Wang, WAN 646 (TNM F9956).

 Habitat: Lignicolous. On charcoal, burnt vegetable debris, and burnt soil.



Brummelen, J. 1967; Paulsen, MD and Dissing, H. 1977.


Y. Z. Wang

 Note: This species is recognized by its habitat and the warty ascospores. Ascobolus archeri Berk. also grows on charcoal but with smaller ascospores (17.5-22 × 9-11.5 μm, Brummelen 1967). The polar thickening on the ascospores is not prominent in Taiwanese collections as described by Brummelen (1967), and Paulsen & Dissing (1979).