Notes on powdery mildews (Erysiphales) in Thailand III. Erysiphe species on Fabaceae, Fagaceae, Hydrangeaceae and Lamiaceae

Abstract

This report provides morphological descriptions of powdery mildew specimens found on Fabaceae, Fagaceae, Hydrangeaceae and Lamiaceae and molecular phylogenetic analyses based on ITS rDNA sequences. These include 4 new host records for Erysiphe species in the world, viz., Desmodium triflorum (Fabaceae), Microtoena insuavis (Lamiaceae) and Mucuna bracteata (Fabaceae). Aeschynomene americana var. americana (Fabaceae), Sesbania grandiflora (Fabaceae) and Tamarindus indica (Fabaceae) are new host for Erysiphe trifoliorum s. lat. and Phanera purpurea (Fabaceae) is new host for Erysiphe lespedezae. In addition, 11 records of Erysiphe species new to Thailand were described.