Clavaria viriditincta Krishnapriya & T.K.A. Kumar, 2023

Kumar, T. K. Arun, 2023, A new species of Clavaria from India, Phytotaxa 601 (2), pp. 197-202 : 199

Clavaria viriditincta Krishnapriya & T.K.A. Kumar , sp. nov. ( Fig. 1 )

MycoBank no:—MB846541

Type:— INDIA. Kerala State, University of Calicut campus (11.11 oN, 75.89 oE, altitude 32 m), 06 June 2022, Krishnapriya K., (holotype, ZGCKP247 ) .

Etymology:—‘ viriditincta’ refers to the green colour of the basidiomata.

Diagnosis:— Clavaria viriditincta differs from other Clavaria species by its large, distinclty green basidiomata, ellipsoid basidiospores (6–7 × 4–5 µm), and inflated hyphae with ampulliform septal swellings.

Description:— Basidiomata 30–80 × 3–5 mm, simple, unbranched, cylindrical, solid when young, becoming fistulose with age, terete in cross section, apex acute to subacute, glabrous, fertile throughout, deep green, darker at the extreme apex, no colour change on bruising, context fleshy, without any distinct odour, no colour reaction in Fe 3 Cl and KOH.

Basidiospores 6–7 × 4–5 µm (Q=1.2–1.7 µm, Q m =1.4 µm), ellipsoid, smooth, thin-walled, hyaline, guttulate, apiculus prominent (up to 1 µm long), inamyloid, cyanophilic in cotton blue. Basidia 30–40 × 7–8 µm, agguttulate, clavate, without basal clamp-connection, sterigmata 4 (up to 5 µm long). Hymenium 20–30 µm wide. Subhymenium 40–50 µm wide. Context composed of generative hyphae, 4–10 µm wide, inflated up to 20 µm wide, interwoven, septate, with ampulliform septal swellings, hyaline, thick-walled (up to 1 µm, inamyloid, cyanophilic in cotton blue. Hyphal clamp-connections absent.

Habitat and distribution:—on soil, among leaf litter, gregarious. This species was collected from an area dominated by Hevea brasiliensis .

Additional specimens examined:— INDIA. Kerala State, Malappuram District, University of Calicut campus, alt. 32 m, 06 June 2022, Krishnapriya K., ( ZGCKP247 A) .

Figures

FIGURE 1. A. Basidiomata B. Basidiospores C. Basidium D. Inflated generative hyphae. Scale bars: A = 10 µm, B = 7 µm, C = 10 µm, D = 15 µm.