Pochonia cordycepisociata H. Huang, M. Wang & L Cai, 2015

Huang, Hai, Luo, Zhang, Yue, Hai Mei, Gong, Wen Feng, Cai, Lei & Wang, Mu, 2015, Pochonia cordycepisociata, a new species associated with Chinese cordyceps in Tibet, China, Phytotaxa 208 (4), pp. 278-286 : 282-283

Pochonia cordycepisociata H. Huang, M. Wang & L Cai , sp. nov. ( Fig. 1 ) MycoBank MB 809869

Differs from other Pochonia species by aggregated compact hyphae submerged in the medium, and cordyceps habitat.

Type: — CHINA, Tibet, Miling County, on sclerotium of Ophiocordyceps sinensis , 23 April 2014, M. Wang, HMAS 245579 (holotype), ex-type culture CGMCC 3.17366 .

Colonies slow growing, reaching 28 mm on CMA, 26 mm on MEA, 31 mm on PDA and 28 mm on OA at 20 ºC for 15 days, compact, floccose, white, reverse yellowish. Hyphae hyaline, smooth, mostly 1–4 μm (x = 3 μm) wide. Phialides hyaline, produced from prostrate aerial hyphae, solitary or in whorls of 2–5, slender, tapering toward the tip hyphae, 16–64 × 0.5–2.4 μm (x = 35 × 1.4 μm). Conidia formed in small globose heads at the apex of phialides, globose to ellipsoidal, smooth-walled, one-celled, 3–7 × 2–3 μm (x = 5 × 2 μm), dictyochlamydospores absent, irregularly aggregated compact hyphae submerged in the agar present. Optimal growth temperature 20 ºC, maximum growth temperature 30 ºC.

Etymology: — “ cordycepisociata ” = associated with Cordyceps.

Distribution:— Miling County, Tibet, China.

Habitat:— living in the sclerotium of Chinese cordyceps ( Ophiocordyceps sinensis parasitized on larvae of Thitarodes sp.

Other materials studied: — CHINA, Tibet, Miling County, on sclerotium of Chinese cordyceps, 23 April 2014, M. Wang ( CGMCC 3.17365 ) ; ibid, CGMCC 3.17367 .

Figures

FIGURE 1. Pochonia cordycepisociata (CGMCC 3.17366). a. Colonies on PDA after 15 days of incubation at 20 °C; b. reverse side of the colony; c–d. conidiophores; e. conidia; f–h. aggregated compact hyphae structures. Scale bars = 10 μm.