Nemania Gray, Nat. Arr. Brit. Pl. (London) 1: 516 (1821)
Index Fungorum number: IF3437
Nemania is a well-known genus in Xylariaceae. Fifty-five species are accepted in this genus (Dayarathne et al. 2020). They are characterized by ascostromata on decaying branches and cracked areas in logs with papillary ostioles, J+ or J- apical rings in asci, and brown ascospores similar to Kretzschmaria and Xylaria (Smith & Hyde 2001, Fournier et al. 2018, Daranagama et al. 2018, Wendt et al. 2018). In the phylogenetic analysis (Dayarathne et al. 2020), Nemania species cluster sister to Rosellinia
Fig. 1 – Phylogram generated from maximum parsimony analysis based on LSU sequence data. Sixty-seven strains are included in the analyses which comprised of 849 characters 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 -3431.976159 is presented. The matrix had 481 distinct alignment patterns with 11.12% of indeterminate characters or gaps. Estimated base frequencies were as follows: A = 0.249644, C = 0.217974, G = 0.303477, T = 0.228905; substitution rates AC = 0.812086, AG = 2.031374, AT = 0.996138, CG = 0.898665, CT = 8.561276, GT = 1.000000; Proportion of invariable sites I = 0.172639; gamma distribution shape parameter α = 0.443207. Bootstrap support values for ML greater than 60% and Bayesian posterior probabilities greater than 0.95 are given near nodes respectively. The tree is rooted with Annulohypoxylon nitens AXL030. Ex-type strains are in bold.