A new species of Phyllachora (Phyllachomles) on Leguminosae from China

摘要

A new species, Phyllachora yunnanensis on Lespedezaformosa and Lespedeza sp., causing tar spots is reported. Based on the characters of tar spots, ascomata, asci and ascospores, the new species differs from other similar species in the number, the shape and the size of ascospores. A new species of Phyllachora on leaves of Lespedezaformosa was collected from Yunnan Province in the autumn of 2005. So far only one species of Phyllachora has been recognized on the genus of Lespedeza: Phyllachora lespedezae (Schwein.) Sacc. (Saccardo 1883: 614) with ellipsoidal to ovoid and slightly inaequilateral ascospores measuring 11-17 x 5-8.5 pim. According to Cannon (1991) monograph on Leguminosae, Phyllachora lespedezae is 4-spored. The new species differs from Phyllachora lespedezae in having 8-spored asci, smaller ascospores (7-13.5 x 5-9 mu m) and ellipsoidal, ovoid or subglobse ascospores.