Two new species of Spencermartinsia (Botryosphaeriaceae, Botryosphaeriales) from China

Abstract

Spencermartinsia is a genus in Botryosphaeriaceae characterized by brown, 1-septate ascospores with an apiculus at either end, and usually found on woody hosts. Conidia are two-celled and become brown and 1-septate prior to dehiscence from conidiogenous cells. Based on morphological characteristics and phylogeny of DNA sequences of the internal transcribed spacer (ITS) region and part of the translation elongation factor 1-α (tef1-α) gene, two new species, namely Spencermartinsia alpina and S. yunnana are described from Yunnan province in China.