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

Ascobolus immersus Pers.: Fr., Sys. Mycol. 2: 164. 1822.

 Description: Apothecia gregarious or scattered, globular or turbinate, 0.3-0.5 mm wide, 0.3-0.5 mm high, receptacle yellowish brown, without margin, disc pale yellow, a few ripe asci protruding far above the surface. Ectal excipulum of textura angularis, cells 8-20 × 10-40 μm, thick-walled, yellowish brown, layer 25-50 μm thick. Medullary excipulum of textura globulosa, cells 4-8 × 6-12 μm, layer 40-50 μm thick. Asci 8-spored, clavate, with a short stalk, 312-550 × 42-114 μm, walls turning blue in Melzer’s reagent. Ascospores oblong ellipsoid, purple-brown, 37-60 × 17-34 μm, smooth or with a few lines, each with a thick gelatinous sheath. Paraphyses simple, filiform, 2-4 μm wide, rarely uncinate at the tips, embedded in yellowish mucus.

Taiwan. Changhua: Yinhangshan, on cow dung, 7 June 1995, Y.Z. Wang 9515 (TNM F3438). Hualien: Yuli, on cow dung, 26 Aug. 1992, Y.Z. Wang 9286 (TNM F0675). Kaohsiung: Luchu, on cow dung, 29 Nov. 1993, Y.Z. Wang 93113 (TNM F1428). Nantou: Chingching Farm, on cow dung, 30 Dec. 1992, Y.Z. Wang 92152 (TNM F0585).

 Habitat: Coprophilous. On dung of cow, horse, sheep, goat, antelope, elephant, dog, hare, and rabbit.



Brummelen, J. 1967; Wang, YZ. 1993.


Y. Z. Wang

 Note: This species is easily recognized by the large asci and ascospores. It is the most common species of Ascobolus in Taiwan. Most collections were found on dry cow dung (Wang 1993).