Cytospora Ehrenb., Sylv. mycol. berol. (Berlin): 28 (1818), Index Fungorum number: IF 7904

Description: See Senanayake et al. (2017b)

Type species: Cytospora chrysosperma (Pers.) Fr.

Note: Cytospora has a broad host range and causes canker and dieback diseases on plants (Adams et al. 2005, 2006, Hyde et al. 2016, 2020a). The genus was established by Ehrenberg (1818), with the characters of hyaline, allantoid conidia and single or labyrinthine of pycnidial locules. There are 663 species listed in Index Fungorum (2020) and Kirk et al. (2008) estimated approximately 110 Cytospora species. However, most of Cytospora lack material, cultures and DNA sequence data. An updated phylogeny for this genus is provided.

FIG 1 – Phylogram generated from one of 1000 most parsimonious trees based on analysis of ITS sequence data of Cytospora isolates. The tree is rooted to Phomopsis vaccinii (ATCC 18451). Maximum parsimony and maximum likelihood bootstrap values ≥70%, Bayesian posterior probabilities ≥0.90 (MPBS/MLBS/PP) are given at the nodes. The species obtained in this study are in blue and ex-types from the study are in blue bold. Ex-type taxa from other studies are in black bold.

FIG 2 – Phylogram generated from one of 1000 most parsimonious trees based on analysis of combined ITS, LSU, RPB2 and ACT sequence data of Cytospora isolates. The tree is rooted to Phomopsis vaccinii (ATCC 18451). Maximum parsimony and maximum likelihood bootstrap values ≥70%, Bayesian posterior probabilities ≥0.90 (MPBS/MLBS/PP) are given at the nodes. The species obtained in this study are in blue and ex-types from the study are in blue bold. Ex-type taxa from other studies are in black bold.

Species