Biscogniauxia grenadensis (J. H. Miller) Whalley & Laessøe

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Biscogniauxia grenadensis (J. H. Miller) Whalley & Laessoe apud Whalley, Laessoe, & Kile, Mycol. Res. 94: 239. 1990.

º Hypoxylon grenadense J. H. Miller, Monogr. of the World Species of Hypoxylon, p. 110. 1961.

º Numulariola grenadensis (J. H. Miller) P. Martin, J. S. African Bot. 35: 289. 1969; [nom. inval., ICBN Art. 33.2]; J. S. African Bot. 42: 77. 1976.

= Hypoxylon grenadense J. H. Miller var. macrospora J. H. Miller, Monogr. of the World Species of Hypoxylon, p. 111. 1961.

º Numulariola grenadensis (J. H. Miller) P. Martin var. macrospora (J. H. Miller) P. Martin, J. S. African Bot. 35: 289. 1969; [nom. inval., ICBN Art. 33.2].

º Biscogniauxia grenadensis (J. H. Miller) Whalley & Laessoe var. macrospora (J. H. Miller) Whalley & Laessoe apud Whalley, Laessoe, & Kile, Mycol. Res. 94: 239. 1990.

Stromata applanate, up to 8 cm long x 1-4 cm broad x 0.6-0.8 mm thick; outer dehiscing layer dark brown, thin; mature surface dark brown; carbonaceous immediately beneath surface and between perithecia; tissue beneath perithecia inconspicuous.

Perithecia obovoid, 0.2-0.4 mm diam x 0.5-0.6 mm high.

Ostioles at the same level as or lower than stromatal surface, with openings punctate, usually surrounded by slightly raised rim.

Asci fragmentary, with apical ring bluing in Melzer's iodine reagent, discoid, 2-2.5 mm high x 3.5-4 mm broad.

Ascospores brown to dark brown, ellipsoid-inequilateral, with one end narrowly rounded and frequently pinched, and the other bearing a hyaline cellular appendage 2-3 mm long x 2-3 mm broad, smooth, 12-16 (not including appendage) x (5-) 5.5-7.5 mm, with straight germ slit spore-length on more convex side.