Hypoxylon fuscopurpureum (Schwein.: Fr.) M. A. Curtis

TELEOMORPH | CULTURES AND ANAMORPH | SPECIMENS EXAMINED | NOTES

TELEOMORPH

Hypoxylon fuscopurpureum (Schwein.: Fr.) M. A. Curtis, Geol. Nat. Hist. Surv. North Carolina, pt. III, p. 140. 1867.

º Sphaeria fuscopurpurea Schwein., J. Acad. Nat. Sci. Philadelphia 5: 16. 1825; Schwein.: Fr., Syst. Mycol. Index, p. 165. 1832.

= Hypoxylon ianthinum Cooke, Grevillea 11: 132. 1883.

º Nummularia ianthina (Cooke) C. G. Lloyd, Mycol. Writings 7: 1312. 1924.

= Hypoxylon vogesiacum (Pers.) Sacc. var. microspora J. H. Miller, Monogr. of the World Species of Hypoxylon, p. 35. 1961.

Stromata effused-pulvinate, plane or with inconspicuous perithecial mounds, 2.3-9 cm long x 0.6-2.2 mm broad x 0.4-0.7 (-1) mm thick; surface vinaceous gray (116), purplish gray (128), livid vinaceous (83), dark vinaceous (82), or brown vinaceous (83), becoming blackish when aged; dull reddish brown granules immediately beneath surface and between perithecia, with KOH-extractable pigments olivaceous (48), greenish olivaceous (90), gray olivaceous (127), or olivaceous gray (121); the tissue below the perithecial layer inconspicuous.

Perithecia spherical to obovoid, 0.1-0.3 mm diam x 0.2-0.4 mm high.

Ostioles lower than the stromatal surface.

Asci 115-150 mm total length x 8-10 mm broad, the spore-bearing parts 75-90 mm long, the stipes 35-65 mm, with apical ring bluing in Melzer's iodine reagent, discoid, 1-1.8 mm high x 3.5-4 mm broad.

Ascospores dark brown to blackish brown, unicellular, pyriform to obovoid, nearly equilateral, usually with one end narrowly rounded and the other broadly rounded, (11.5-) 12-15 (-16) x 5.5-7 mm, with straight germ slit spore-length to slightly less than spore-length; perispore indehiscent in 10% KOH; epispore smooth.