TRITIRACHIUM ORYZAE, A MITOSPORIC SPECIES NEW TO CHINA
一个有丝分裂孢子真菌中国新记录——稻麦穗孢

Tritirachium Limber (1940) is typified by T. dependens Limber, based on the rachis-like sympodula produced in verticilate arrangements. The genus is close to Beauveria Vuill. In Tritirachium, conidiogenous cells are cicatrized, arising in whorls from ascendent hyphae, while in Beauveria, conidiogenous cells are denticulate, arising in clusters from subtending cells or solitarily from undifferentiated hyphae (Hoog, 1972). There are 25 binames in Tritirachium (Funindex, 2000), however, only 10 species are included. MacLeod (1954) provided a detail literature review on Beauveria and Tritirachium. Hoog (1972, 1973) later redefined this genus and accepted 4 species. Species had not been added almost in 20 years from 1976 until 1995 when Matsushima described a Japanese species T. fuscum from litter of forest.