Biscogniauxia zelandica Y.-M. Ju & J. D. Rogers



Biscogniauxia zelandica Y.-M. Ju & J. D. Rogers, Mycotaxon 66: 59. 1998.

Stromata applanate, up to 13 cm long x 2-4 cm broad x 0.5 mm thick; outer dehiscing layer dark brown, thin; mature surface dark gray; carbonaceous immediately beneath surface and between perithecia; tissue beneath perithecia inconspicuous.

Perithecia obovoid, 0.2 mm diam x 0.4 mm high.

Ostioles lower than stromatal surface, with opening punctate.

Asci 135-155 mm total length x 8.5-10 mm broad, the spore-bearing part 125-140 mm long, the stipes 10-20 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 1.5-2 mm high x 3.5-4 mm broad.

Ascospores light brown to brown, fusoid-inequilateral, with one end narrowly rounded and the other bearing a hyaline cellular appendage 2-2.5 mm long x 2-2.5 mm broad, smooth, (14-) 16-21 (not including appendage) x 5-6.5 mm, with straight, less than spore-length germ slit usually on less convex side.