Coniochaeta (Sacc.) Cooke, Grevillea 16(no. 77): 16 (1887)

Index Fungorum number: IF 1209

Coniochaeta is the type genus of Coniochaetaceae, Coniochaetales. The genus consists of 98 species (Species Fungorum 2020). The type species is C. ligniaria. Members of Coniochaeta are characterized by dark brown to black, pyriform to globose ascomata with or without ostioles, a membranaceous to pseudoparenchymatous peridium, presence or absence of hamathecium, unitunicate thin-walled asci, with a small J- apical ring and one-celled ascospores. The asexual morph is hyphomycetous and has been described in Lecythophora (Weber et al. 2002, Khan et al. 2013). An updated phylogeny for the genus is provided.

Figure 1. Phylogram generated from maximum likelihood analysis based on combined LSU and ITS sequence data. Thirty-five strains are included in the combined analyses which comprised 1544 characters (900 characters for LSU and 643 characters for ITS) 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 -6640.737819 is presented. Estimated base frequencies were as follows: A = 0.246596, C = 0.243886, G = 0.288026, T = 0.221492; substitution rates AC = 1.659443, AG = 2.091549, AT = 1.486255, CG = 1.791599, CT = 7.712593, GT = 1.000000; gamma distribution shape parameter a = 0.559163. Bootstrap support values for ML greater than 75% and Bayesian posterior probabilities greater than 0.90 are given near nodes respectively. The tree is rooted with C. pygmaea (UPSC 2523) and C. innumera (SMH 2748). Ex-type strains are in bold and black. The newly generated sequences are indicated in yellow.