Aschersonia oxyspora Berk., (1854)

Anamorph state: Aschersonia oxystoma Berk.

No description

Specimens were found on the underside of monocotyledonous and dicotyledonous leaves of forest plants. Hosts are Hemiptera (scale insects). Stromata irregularly pulvinate, pale yellow to orange, thin white hypothallus surrounds the stroma, up to 2 mm in diam. and ca. 1.5 mm high. Usually the stromata were found bearing either the teleomorph or the anamorph. Perithecia scattered, immersed, elongated or narrowly flask-shaped, 450-550 μm long, 250-260 μm wide. ostioles translucent dark orange. Asci cylindrical, up to 380 μm long, ca. 10 μm wide. Ascospores divide into part-spores, narrowly oval with rounded ends, hyaline, 10-12.5 μm long, ca. 2.5 μm in diam. The perithecia of Thai specimens were longer than those described by Petch, which are 500 x 200 μm; asci are 320 x 8-10 μm; ascospores 7-10 x 2.5-3 μm (Petch, 1921). In culture the colonies on PDA are slow-growing, attaining a diam. of 4 mm and producing conidia after ca. 5 wk on PDA at 20°C. Colonies stromatic with yellowish mycelium, spore mass yellow to orange–yellow spreading over the stroma. The Moelleriella state is rarely found; more usually found is the anamorph. Collections have been from Nam Nao National Park in the north until Khao Pu–Khao Ya National Park in the far south. All collections appear below 1000 meters elevation.