Hydnophlebia canariensis Telleria, M. Duenas & M.P. Martin

Telleria, M. Teresa, Duenas, Margarita & Martin, Maria P., 2017, Three new species of Hydnophlebia (Polyporales, Basidiomycota) from the Macaronesian Islands, MycoKeys 27, pp. 39-64 : 48

1. Hydnophlebia canariensis Telleria, M. Duenas & M.P. Martin sp. nov. Figs 3, 4

Diagnosis.

This species can be recognized by the orange-yellow basidiome, hydnoid hymenophore with long aculei, up to 1,5 mm, white subiculum, and well-developed white strands. Spores ellipsoid 5−7 × 3−4.5 µm (L/W = 1.5).

Type.

Spain. Canary Islands: El Hierro, Frontera, Sabinar de la Dehesa, 27°44'43"N; 18°07'02"W, 610 m alt., on unidentified wood, 26 January 2007, M.T. Telleria, 17035Tell. (holotype: MA- Fungi 86622). LSU sequence KF528103, ITS sequence KF483012.

Etymology.

Named after the Canary Islands where the holotype and paratypes were collected.

Description.

Basidiome resupinate, effuse, membraneous to ceraceous, yellow (82. v. Y) in fresh specimens and light orange-yellow (70. l. OY) in dry. Hymenophore hydnoid, aculei conical, 0.5−1.5 mm long. Subiculum byssoid, white. Margin fimbriate, white, with well-developed white strands.

Hyphal system monomitic; subicular hyphae 6−8 µm wide, with clamps, thin to thick-walled; strand hyphae 7−11 µm wide, without clamps, thick-walled; aculei hyphae 4−5 µm wide, without clamps, thin-walled and growing perpendicular to the substrate; subhymenial hyphae 3−4 µm wide, without clamps, thin-walled, and loosely interwoven. Cystidia of two types: cylindrical with slightly tapered apex and ventricose with subulate apex, thin-walled, 45−55 × 3−5 µm. Basidia cylindrical to subclavate, 24−28 × 4−6 µm, with 4 sterigmata, basal clamp absent. Spores ellipsoid 5−7 × 3−4.5 µm (L/W = 1.5), thin-walled, colorless, smooth.

Ecology and distribution.

On decayed wood and plant debris in arid and semiarid habitats; known only from the Canary Islands.

Other specimens examined.

Spain. Canary Islands: El Hierro, Frontera, Sabinar de la Dehesa, 27°44'43"N; 18°07'02"W, 610 m alt., on unidentified wood, 26 January 2007, M.T. Telleria, 17038Tell. (MA- Fungi 86623), LSU sequence KF528104, ITS sequence KF483013. Fuerteventura, Pájara, Parque Natural de Jandía, Valle de los Mosquitos, 28°04'36"N; 14°25'23"W, 99 m alt., on Launaea arborescens , 05 December 2007, M.T. Telleria, 17674Tell. (MA- Fungi 86619), LSU sequence KF528100, ITS sequence KF483009.