Hypoxylon anthochroum Berk. & Broome

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon anthochroum Berk. & Broome, J. Linn. Soc., Bot. 14: 122. 1873.

= Hypoxylon murcidum Berk. & Broome, J. Linn. Soc., Bot. 14: 123. 1873.

= Hypoxylon albostigmatosum Speg., Anales Soc. Ci. Argent. 18: 271. 1884.

º Hypoxylon rubiginosum (Pers.: Fr.) Fr. f. albostigmatosum (Speg.) Theiss., Ann. Mycol. 7: 147. 1909.

= Hypoxylon guarapiense Speg., Anales Soc. Ci. Argent. 18: 272. 1884.

= Hypoxylon fuscopurpureum (Schwein.: Fr.) M. A. Curtis f. corticola Starb., Bih. Kongl. Svenska Vetensk.-Akad. Handl. 27, 3: 9. 1901.

Stromata effused-pulvinate, plane or with inconspicuous perithecial mounds, 0.3-4 (-10) cm long x 0.3-3 cm broad x 0.5-1.1 mm thick; surface sepia (63), chestnut (40), or brown vinaceous (84); dull reddish brown or blackish granules immediately beneath surface and between perithecia, with KOH-extractable pigments isabelline (65), olivaceous (48), gray olivaceous (107), greenish olivaceous (90), or amber (47); the tissue below the perithecial layer inconspicuous.

Perithecia obovoid to tubular, 0.2-0.3 (-0.4) mm diam x 0.3-0.6 mm high. Ostioles lower than the stromatal surface.

Asci 97-130 mm total length x 6.5-8 mm broad, the spore-bearing parts 56-72 mm long, the stipes 41-61 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 0.5-1 mm high x 2-2.7 mm broad.

Ascospores brown to dark brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, 8.5-13.5 x 4-6 mm, with straight to slightly sigmoid germ slit spore-length; perispore dehiscent in 10% KOH, smooth or with inconspicuous to conspicuous coil-like ornamentation; epispore smooth.