Coltriciella globosa and C. pseudodependens spp. nov. (Hymenochaetales) from southern China based on morphological and molecular characters

Abstract

Two new species of Coltriciella, C. globosa and C. pseudodependens, are described from southern China on the basis of morphological and molecular characters. Phylogenetic analysis based on the large subunit of nuclear ribosomal RNA gene region show that the two new species nest within the clade including Coltriciella and Coltricia genera, but the relationship between these two genera is unresolved yet. The ornamented basidiospores of the two new species revealed that they morphologically belonged to Coltriciella. Coltriciella globosa is characterized by erect and centrally stipitate basidiocarps, angular pores measuring 2–4 per mm, fusoid cystidioles and globose, verrucose, yellowish basidiospores. Coltriciella pseudodependens is very similar to C. dependens, but differs in having larger pores and distinctly larger basidiospores. An identification key to the accepted species of Coltriciella currently is provided.