Pyrispora humilis (L. P. P. Magalhães, N. L. P. Sales & A. C. da Silva) Ning Jiang 2025

Jiang, Ning, Xue, Han & Li, Yong, 2025, Species diversity of Pseudoplagiostoma and Pyrispora (Diaporthales) from Fagaceae hosts in China, IMA Fungus 16, pp. e 153782-e 153782 : e153782-

Pyrispora humilis (L. P. P. Magalhães, N. L. P. Sales & A. C. da Silva) Ning Jiang comb. nov.

Basionym.

Pseudoplagiostoma humilis L. P. P. Magalhães, N. L. P. Sales & A. C. da Silva

Description.

See Magalhães et al. (2024).

Distribution.

Brazil.

Ecology.

Causing shoot blight and dieback of Anacardium humile .

Notes.

The genus Pseudoplagiostoma is characterized by producing holoblastic, hyaline to brown, ellipsoid, unicellular, subglobose to broadly allantoid, thick-walled conidia with a prominent hilum. Although Ps. humilis was recently described in this genus based on similar anamorphic characteristics ( Magalhães et al. 2024), it differs notably by lacking both thick-walled conidia and a prominent hilum. Furthermore, our phylogenetic analyses robustly support the placement of this species within Pyrispora (Fig. 1 ). Based on these combined morphological and molecular evidences, we formally propose the transfer of Ps. humilis to Pyrispora .

Figures

Figure 1. Phylogram of Pseudoplagiostoma and Pyrispora resulting from a maximum likelihood analysis based on the ITS, LSU, RPB 2, TEF 1 - α and TUB 2 gene loci. Numbers above the branches indicate ML bootstrap values (left, ML BS ≥ 70 %) and Bayesian posterior probabilities (right, BPP ≥ 0.95). Ex-type strains are marked with *.