Catabotrys Theiss. & Syd., Annls mycol. 13(3/4): 297 (1915)

Index Fungorum number: IF834

Catabotrys species are generally saprobes on plant leaves or petioles, and they are also reported as endophytes in China (Wu et al. 2014a). There are two species listed in Index Fungorum (2020), and a new collection of C. deciduum is described and illustrated in Fig 1.

Fig. 1 – Phylogram generated from maximum likelihood analysis based on combined ITS and LSU sequence data of taxa in Amplistromatales and Catabotryales. Seventeen strains are included in the combined analyses which comprised 1629 characters (715 characters for ITS, 914 characters for SSU) after alignment. Tree topology of the maximum likelihood analysis is similar to the Bayesian analysis. The best RaxML tree with a final likelihood value of -6794.539143. Estimated base frequencies were as follows: A = 0.222750, C = 0.268651, G = 0.321058, T = 0.187541; substitution rates AC = 0.917760, AG = 2.004735, AT = 1.911301, CG = 0.821570, CT = 8.716668, GT = 1.000000; gamma distribution shape parameter α = 0.485675. Bootstrap support values for ML and MP greater than 75% and Bayesian posterior probabilities greater than 0.95 are indicated in bold branches. The tree is rooted with Ophioceras aquaticus (IFRDCC 3091) and O. dolichostomum (CBS 114926). Ex-type strains are in bold and black.