Pyrenomycetes Species Page

Cercophora costaricensis

Large separate ascomata
didymospore
(G.C. Carroll & Munk) O. Hilber & R. Hilber, in Hilber & Hilber, Z. Mykol. 45(2): 217 (1979)
Bombardia costaricensis G.C. Carroll & Munk 1964
Sordariomycetidae
Sordariales
Figure from SMH4021
Genbank Accession: AY780059 (LSU), AY780103 (Btub), AY780163 (RPB2)
Complete Description
Ascomata ovoid, dark brown, cartilagineous consistency, papillate, 300-400 µm diam, 500-600 µm high, numerous, clustered in large groups, superficial; surface sparsely covered with light brown hairs, smooth but when dried conspicuously wrinkled and ridged. Ascomatal wall of textura angularis in surface view; 80-100 µm thick in longitudinal section, 3-layered, with an inner and outer brown, pseudoparenchymatous layer, and a middle, hyaline, gelatinized, prosenchymatous layer. Paraphyses filiform, 3-7 µm wide, abundant, septate, unbranched, persistent. Asci clavate, spore bearing part 140-170 x 15-18 µm, numerous, unitunicate, thin-walled, apex blunt; ring narrow, shallow; subapical globule present; with 8, biseriate ascospores. Ascospores cylindrical, slightly sigmoid or lower 1/3 to 1/4 geniculate, becoming differentiated into a swollen head and pedicel while inside the ascus, transversely uniseptate, hyaline; 47-63 µm long, head ellipsoid, 18-22 X 10-13 µm, rounded at the apex, truncate at the base, hyaline to occasionally brown, pedicel 3-6 µm wide, hyaline to occasionally pale brown; bipolar appendages present, 9-24 (-100) µm long, gelatinous, lash-like.
Occurrence
Found on decaying wood and herbaceous stems. Our collections are from Costa Rica and Venezuela.