Kretzschmaria micropus (Fr.: Fr.) Sacc.



Kretzschmaria micropus (Fr.: Fr.) Sacc., Syll. Fung. II, p. xxix. 1883.

º Sphaeria micropus Fr., Linnaea 5: 542. 1830; Fr.: Fr., Syst. Mycol. Index, p. 169. 1832.

º Hypoxylon micropus (Fr.: Fr.) Berk., J. Linn. Soc., Bot. 10: 383. 1869.

º Rhopalopsis micropus (Fr.: Fr.) Cooke, Grevillea 11: 94. 1883.

= Hypoxylon aggregatum Welw. & Curr., Trans. Linn. Soc. London 26: 282. 1867.

º Rhopalopsis aggregatum (Welw. & Curr.) Cooke, Grevillea 11: 93. 1883.

º Kretzschmaria aggregata (Welw. & Curr.) Sacc., Syll. Fung. II, p. xxix. 1883.

= Kretzschmaria spinifera Ellis & Macbride apud Ellis & Everh., Bull. Lab. Nat. Hist. Iowa State Univ. 4: 71. 1896.

= Hypoxylon abyssinicum Sacc., Ann. Mycol. 10: 312. 1912.

= Kretzschmaria erythraeae Baccarini & Sacc. apud Baccarini, Ann. Botanica 14: 133. 1916. Fide Dennis (1957).

Stromata with convex, obconical fertile parts 1-2.5 mm diam, usually containing one or two perithecia, densely aggregated or fused into composite structure, bearing one to several spines on top, tapering downwards into narrow connectives or radiating, strap-like stipes; surface dull blackish brown, usually with slight reticulate cracks; carbonaceous immediately beneath surface; tissue between and beneath perithecia coriaceous to woody, white to gray, becoming dark brown and disintegrating.

Perithecia spherical to obovate, 0.7-1.8 mm diam x 1.2-2 mm high.

Ostioles sharply conical.

Asci fragmentary, with apical ring bluing in Melzer's iodine reagent, urn-shaped, 7-8 mm high x 5 mm broad.

Ascospores dark brown, unicellular, ellipsoid-inequilateral, with narrowly to broadly rounded ends, smooth, 30-40 x 8-12(-13.5) mm, with straight germ slit slightly less than spore-length.