Pyrenomycetes Species Page

Cercophora macrocarpa

Large clustered ascomata
Large separate ascomata
didymospore
(G.C. Carroll & Munk) O. Hilber & R. Hilber, in Hilber & Hilber, Z. Mykol. 45(2): 218 (1979)
Bombardia macrocarpa G.C. Carroll & Munk
Sordariomycetidae
Sordariales
Figure from mix
Complete Description
Ascomata ovoid to obpyriform, dark brown, carbonaceous consistency, papillate, 500-600 µm diam, 1000 µm high, numerous, clustered in large groups, superficial; surface finely tuberculate, occasionally with a white outer tomentum; neck conical, deeply 7-8 sulcate, distinct; subiculum absent. Ascomatal wall of textura angularis in surface view; 70-100 µm thick in longitudinal section, 3-layered, composed of pseudoparenchymatous cells, with an inner and outer hyaline layer, and a middle, black, carbonized layer. Ascomatal apex with periphyses. Paraphyses filiform, 6-8 µm wide, abundant, septate, unbranched, persistent. - Asci cylindrical, spore bearing part 220-250 x 11-25 µm, numerous, unitunicate, thin-walled, apex blunt; ring narrow, shallow; subapical globule present; with 8, biseriate ascospores. Ascospores cylindrical, ends rounded, slightly sigmoid, hyaline, aseptate; becoming differentiated into a swollen head and pedicel and transversely uniseptate; 50-65 X 4-5 µm, head ellipsoid, 5-8 µm wide, conical at the apex, truncate at the base, hyaline to occasionally brown, rarely dark brown; bipolar appendages present, 35-40 µm, gelatinous, lash-like.
Occurrence
Found on decaying wood. Our collections are from Costa Rica, Ecuador, French Guiana, Panama, Puerto Rico and Venezuela.
Similar Taxa Comments
Carroll and Munk give spore measurements that are longer (80-95) and describe a mature spore as having a dark brown spore head. In our collections, the spores mostly remain hyaline and are shorter. But the distinctive sulcate neck is present in all collections and would suggest they are all the same species.