Apothecia gregarious, lenticular, 0.3-0.8 mm wide, 0.3-0.5 mm high, receptacle light brown, disc greenish yellow to brown, dotted with ripe asci. Excipulum of textura angluaris, cells 12-28 × 9-18 μm, layer 25-75 μm thick. Asci 8-spored, clavate, 190-250 × 25-28 μm, walls turning blue in Melzer’s reagent. Ascospores ellipsoid, hyaline turning to brown, 20-25 × 11-12.5 μm, smooth or finely granulate, with a unilateral sheath. Paraphyses filiform, straight or uncinate at the tips, 2.5-3 μm wide, embedded in yellowish green mucus.
Specimens：
Taiwan. Hsinchu: Liufutsun Zoo, on dung of unknown animal, 30 Dec. 1993, Y.Z. Wang 93122 (TNM F1445). Hualien: Cholu, on sheep dung, 21 July 1994, Y.Z. Wang 94042 (TNM F2243). Kaohsiung: Chiahsien, on cow dung, 20 July 1993, Y.Z. Wang 9385 (TNM F0995). Miaoli: Provincial Miaoli Agri-industrial Vocational High School, on horse dung, 10 Jan. 1996, Y.Z. Wang 9606 (TNM F4464). Taichung: Tunghai Univ., on cow dung, 18 Oct. 1994, Y.Z. Wang 9458 (TNM F2573).
Habitat：
Coprophilous. On dung of cow, horse, hare, sheep, and rabbit, also on rotting leaves.
Distribution：
Cosmopolitan.
References：
Brummelen, J. 1967; Wang, YZ. 1999.
Provided：
Y. Z. Wang
Note：
This species is close to Ascobolus amoenus and A. elegans, which are characterized by greenish cupulate apothecia and granulate ascospores. The main difference within this group is the size of the ascospores. Ascobolus amoenus has the largest ascospores, A. mancus the smallest, and those of A. elegans are intermediate in size. However, the ascospores of the Taiwanese collections are slightly larger than those of the typical material (19-23 × 10-12 μm, Brummelen 1967), hence the distinction between A. elegans and A. mancus is not very clear.
Phylum：Ascomycota >> Class： Ascomycetes >> Order： Pezizales 
BCRC Number：