Wynnella subalpina Q. Zhao, Zhu L. Yang & K.D. Hyde, 2016

Zhao, Qi, Brooks, Siraprapa, Zhao, Yong-Chan, Yang, Zhu L. & Hyde, Kevin D., 2016, Morphology and phylogenic position of Wynnella subalpina sp. nov. (Helvellaceae) from western China, Phytotaxa 270 (1), pp. 41-48 : 44-46

Wynnella subalpina Q. Zhao, Zhu L. Yang & K.D. Hyde , sp. nov. Fig. 2

Index Fungorum number: 551515, Facesoffungi number: FoF 01055

Diagnosis:—Rabbit-ear shaped apothecia, with a tea brown to blackish brown hymenium, a red, reddish brown to greyish yellow receptacle surface, and a costate stipe. Paraphyses filiform 3–4 µm broad, and ascospores ellipsoid 19–23 × 10.5–12 μm.

Etymology:— subalpina is proposed for its occurrence in subalpine regions in western China.

Apothecia rabbit-ear shaped, 3–6 cm high, 1–4 cm broad, hymenium glabrous, tea brown to blackish brown, blackish brown when dry, margin rolled to hymenium when young, expanded at maturity; receptacle surface glabrous, red, reddish brown to greyish yellow, yellowish near the base. Stipe costate, glabrous, 0.5–1.5 × 0.5–2 cm, narrowing to base, light yellow to yellowish. Medullary excipulum 400–490 µm broad, of textura intricata, hyaline, composed of 2.5–5 µm broad hyphae, J-. Ectal excipulum 100–150 µm broad, of textura angularis, pale yellow, lightly encrusted with pale brown crystals, end cells 30–60 × 10–20 μm, J-. Asci arising from croziers, 8-spored, cylindrical to clavate, with apex rounded, 330–390 × 17–23 µm. Paraphyses filiform, 3–4 µm broad, brown, slightly short or exceeding the asci, hyaline in Melzer's reagent, light blue in cotton blue, enlarged apex 4–6 µm broad, J-. Ascospores [60/2/2, in H 2 O] 19–23 × 10.5–12 μm [Q = 1.32–1.58, Q = 1.47 ± 0.06)], ellipsoid, smooth-walled under the light microscope. Odor unique and strong when dried, but not detected when fresh.

Habitat and distribution:—Solitary to scattered on the ground or moss, under Picea spp. forest. Only known from high altitude localities in western China.

Typification:— CHINA. Tibet, Riwoqe County, on road (highway 317) from Riwoqe to Dingqing , 12 August 2004, Zhu L . Yang 4371 (holotype, HKAS 45750 !) .

Additional material examined:— CHINA. Tibet, Riwoqe County, on road (highway 317) from Riwoqe to Dingqing, 12 August 2004, Zhu L . Yang 4371 (isotype, FH 00301682 !), Bomi County, on moss under Picea spp. forest, alt. 3600 m, 16 August 2014, Q . Zhao 2110 ( HKAS 78940 !) ; Sichuan Province, Jiuzhaigou County, on the ground, under Picea spp forest, alt. 3000 m, 20 June 2014, Q . Zhao 2050 ( HKAS 87730 !) .