Hypoxylon laschii Nitschke

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon laschii Nitschke, Pyren. Germ., p. 36. 1867.

= Hypoxylon laschii Nitschke subsp. onnii P. Karst., Meddeland Soc. Fauna Fl. Fenn. 14: 147. 1887.

= ? Hypoxylon luridum Nitschke var. minus Sacc., Michelia 1: 24. 1877.

Stromata pulvinate to discoid, erumpent, usually encircled with ruptured plant tissue, plane or with inconspicuous perithecial mounds, 1-5 (-8) mm diam x 0.6-2.5 mm thick; surface rust (39) or dark brick (60); orange or orange brown granules immediately beneath surface and between perithecia, with KOH-extractable pigments orange (7) or scarlet (5); the tissue below the perithecial layer black, 0.5-1 mm thick.

Perithecia spherical, 0.2-0.4 (-0.5) mm diam.

Ostioles at the same level as or slightly higher than the stromatal surface.

Asci 165-190 mm total length x 5-6 mm broad, the spore-bearing parts 60-80 mm long, the stipes 85-110 mm long, with apical ring bluing in Melzer's iodine reagent, discoid, 1 mm high x 2.5 mm broad.

Ascospores brown to dark brown, unicellular, ellipsoid-inequilateral, with narrowly rounded ends, 8-10 x 3.5-4.5 mm, with straight germ slit spore-length; perispore dehiscent in 10% KOH, smooth; epispore smooth.