Discoxylaria myrmecophila J.C. Lindq. & J.E. Wright



Discoxylaria myrmecophila J. C. Lindq. & J. E. Wright emend. J. D. Rogers, Y.-M. Ju, & San Martín Gonzalez, Mycologia 87: 42. 1995.

= Hypocreodendron sanguineum Henn. emend. J. D. Rogers, Y.-M. Ju, & San Martín Gonzalez, Mycologia 87: 42. 1995; stat. anam.

Stromata upright, unbranched or highly branched in indefinite manner, the branches to 2.5 cm high x 6 mm diam. Ultimate branches terminating in discoid to subcupulate processes to 8 mm diam. Rooting portion to 4 cm long x 5 mm diam, tapering downward to ca. 2 mm diam. Branches and rooting portion eventually hollow. Texture fleshy when wet, cartilaginous or woody when dry. Surface of branches and exterior of discs gray; interior white. Inner surface of discs orange to bright orange.

Perithecia 0.1-0.3 mm diam, more or less embedded in stipes below discs.

Ostioles papillate.

Asci eight-spored, uniseriate, stipitate, ca. 95 µm total length x 6 µm broad, the spore-bearing part ca. 65 µm. Ascus apical ring bluing in Melzer's iodine reagent, rectangular to slightly obconic, 1.5-2.2 µm high x 1.5-2.2 µm broad.

Ascospores brown, smooth, ellipsoid-inequilateral, sometimes bearing a tiny hyaline cellular appendage and hyaline sheath, 6-8(-9) x (3-)3.5-4.5 µm, with inconspicuous straight germ slit on flattened or probably sometimes on the convex side, less than full-length.

Paraphyses septate, longer than asci, sometimes branched, 5-7 µm broad.