Varicosporellopsis shangrilaensis Z. R. Dou & K. L. Wang, 2023

Dou, Zheng-Rong, Zhang, Fa, Zhou, Guo-Jun, Gong, Gao-Fen, Ding, Jia-Jie, Fan, Xu-Hang, Jiang, Bei & Wang, Kai-Ling, 2023, Varicosporellopsis shangrilaensis sp. nov. (Nectriaceae, Hypocreales), a new terricolous species isolated from the rhizosphere soil of Astragalus polycladus in northwestern Yunnan, China, Phytotaxa 600 (4), pp. 230-238 : 233-234

Varicosporellopsis shangrilaensis Z. R. Dou & K. L. Wang , sp. nov. ( Figure 2 )

Index Fungorum number: IF 559862

Etymology: —The epithet “ shangrilaensis ” refers to the name of the host location, Shangri-la, where the holotype was collected.

Holotype: — CHINA, Yunnan Province, Diqing City , Shangri-la County, N 27°26′19.715″ E 99°50′24.193″, from the rhizosphere soil of the plant Astragalus polycladus Bur. et Franch ; 24 September 2021, Z. R. Dou, CGMCC 3.21000 holotype, deposited in the China General Microbiological Culture Collection Center. Ex-type living culture MTF 7, preserved in the Dali University Culture Collection.

Description:—Asexual morph colonies on PDA initially white, gradually turning to pale yellow after two weeks, cottony, growing slowly, reaching 30 mm diam, after 10 days at 26 °C. Mycelium hyaline, branched, smooth, consisting of septate, frequently forming hyphal coils. Conidiophores macronematous, erect, septate, unbranched or branched at the base. Conidiogenous cells 10–20 × 3–5 μm (x̅ = 14.5 × 4.3 μm, n = 100), phialidic, with a minute collarette. Conidia two types: Macroconidia 8–20 × 2.5–8.5 μm (x̅ = 13.5 × 4.5 μm, n = 100), reniform or cymbiform, straight or slightly curved, guttulate, aseptate, hyaline, smooth; Microconidia 3.5–6.5 × 3–6 μm (x̅ = 4.9 × 4.8 μm, n = 100), spherical or teardrop-shaped, guttulate, aseptate, hyaline, smooth. Chlamydospores not observed. Sexual morph was undetermined.

Known distribution: — Diqing City ( H about 3,226 m), Shangri-la County, Yunnan Province, China .

Additional material examined: — CHINA, Yunnan Province, Diqing City , Shangri-la County, N 27°26′19.715″ E 99°50′24.193″, from rhizosphere soil of Astragalus polycladus , 24 September 2021, K. L. Wang and Z. R. Dou, living culture KLF 01 .

Figures

FIGURE 2. Varicosporellopsis shangrilaensis (CGMCC 3.21000, holotype). a Colony. b Macroconidia. c, e Conidiophores and conidiogenous cells. d Microconidia. Scale bars: a = 10 mm, b, d, e = 10 μm, c = 20 μm.