Spodocybe bispora 2021

Spodocybe bispora Z. M. He & Zhu L. Yang, sp. nov.2021

MycoBank No: 839054

Holotype: China. Yunnan Province: Baoshan City, Longyang District, Shuizhai Vil lage, at 25.273967°N, 99.306216°E, alt. 2400 m, 12 Aug 2011, J. Qin 324 (KUN HKAS 73310, holotype).

Morphological description

Sexual morph: Basidiomes small, clitocyboid. Pileus 1.5–3 cm in diam, plano-con vex to funnel-shaped; surface dry and nearly smooth, greyish-brown to grey brown; center depressed, usually with a low umbo, somewhat darker; margin generally straight and undulating, incurved when old; context thin and white. Lamellae deeply decurrent, white to cream, thin, 1–2 mm high, relatively crowded, sometimes forked and intervenose. Stipe 1–3 × 0.2–0.4 cm, central, sub cylindrical, hollow; surface dry and nearly smooth, concolorous with pileus; context white.

    Basidiospores [60/3/3] (7)7.5–10.5(11.5) × 3–4 μm, Q = (2.05)2.11–3(3.33), Qm = 2.56 ± 0.3, cylindrical, colorless, hyaline, smooth, thin-walled, inamyloid. Basidia 20–30 × 4–5.5 μm, clavate, 2-spored, colorless, hyaline, thin-walled; sterigmata up to 10 μm long; ratio of basidia to basidiospore length less than 5 (about 2–4). Cystidia absent. Lamellar trama subregular, colorless, hyaline, made up of thin-walled cylindri cal hyphae with 3–10 μm wide. Pileipellis a cutis, composed of thin-walled cylindrical hyphae 3–11 μm wide. Stipitipellis a cutis, composed of thin-walled cylindrical hyphae 3–10 μm wide. Clamp connections in all parts of basidiomes.

Asexual morph: Undetermined

Culture characteristics:

Habitat: Saprophytic, usually gregarious on the ground of coniferous or coniferous and broad-leaved mixed forest.

Distribution: Known from Yunnan, Chi na

GenBank Accession:

ITS MW762880; nrLSU MW763005; rpb2 MW789184; rpb1 MW789168; tef1-α MW773444; atp6 MW789199

ITS MW762881; nrLSU MW763006; rpb2 MW789185; rpb1 MW789169; tef1-α MW773445; atp6 MW789200

ITS MW762882; nrLSU MW763007; rpb2 MW789186; rpb1 MW789170; tef1-α MW773446; atp6 MW789201

Notes:

Reference: [1] He, Z. , &  Yang, Z. . (2021). A new clitocyboid genusspodocybeand a new subfamily cuphophylloideae in the family hygrophoraceae (agaricales). MycoKeys, 79, 129-148.

Figure 4. Basidiomes of described Spodocybe species. C, D Spodocybe bispora (KUN-HKAS 73332, KUN-HKAS 112562, respectively). Scale bars: 1 cm. 

Figure 6. Microscopic features of Spodocybe bispora (KUN-HKAS 73310, holotype) a basidiospores b basidia c pileipellis. Scale bars: 10 μm.