Cyathus lignilantanae R. Cruz & M.P. Martín, 2015

Martín, María P., Cruz, Rhudson H. S. F., Dueñas, Margarita, Baseia, Iuri G. & Telleria, M. Teresa, 2015, Cyathus lignilantanae sp. nov., a new species of bird’s nest fungi (Basidiomycota) from Cape Verde Archipelago, Phytotaxa 236 (2), pp. 161-172 : 165

Cyathus lignilantanae R. Cruz & M.P. Martín , sp. nov. ( Figs. 2–3 )

Mycobank MB811700

Type:— CAPE VERDE, Santiago, St. Domingo, Ruiz Vaz, 15º01’53” N 23º36’33” W, 872 msl, on wooded debris of Lantana camara , 12 April 2013, M. Dueñas, M. T. Telleria & M. P. Martín, MPM 3246 (holotype, MA-Fungi 87327!)

Diagnosis:—This species has a distinctly plicate peridium, both in external and internal walls, light colored peridioles provided with double layered cortex, spores up to 30 μm in length and its unique ITS sequence.

Peridium infundibuliform (4.6–)6.9–8.2 × (3.9–) 5.2–6.9 mm, not expanded at the mouth but tapering at the base, except in small basidiomata of MA-Fungi 87328; conspicuous emplacement 1.7–3.9 mm, reddish brown (6 F5 KW or 6 F6 KW). Exoperidium hirsute reddish brown (6 F5 KW or 6 F6 KW), arranged in irregular and flexible tufts, 0.4–0.6 mm, wall conspicuously plicate with 0.3–0.6 mm between the folds. Mouth finely fimbriate, continuum pattern, 0.2– 0.4 mm, greyish brown (8 F3 KW) to dark brown (7 F4 KW). Endoperidium “café-au-lait” or greyish brown (6D3–7 F3 KW) to brownish grey (7D2–8 E2 KW), conspicuously plicate with 0.2–0.5 mm between the groves, brightness sometimes contrasting with the exterior, being platinum in the holotype. Peridioles brownish grey (10 F2 KW) to greyish brown (10 F2–10 F3 KW), 2.1–2.3 × 1.8–2.0 mm, circular to elliptical at edges, sometimes irregular to angular ; indistinct tunica and double layered cortex. Basidiospores smooth, hyaline, (10.8–)13.0–25.3(–33.1) × (6.9–)9.4– 17.0(–19.6) μm, rarely found in microscopic slide, slightly elliptical to elongated ( Q = 1.3–2.0), mostly ellipsoid (Qm = 1.5; L = 19.2; W = 12.9), thin wall 1.0–2.1 μm; some spores with apiculus.

Etymology:—The epithet refers to the substrate where this species grows, on woody debris of Lantana camara .

Known distribution:— Cape Verde archipelago.

Additional specimens examined: — CAPE VERDE, Santiago, Serra da Malagueta Natural Park, Ruiz Vaz, 15º01’53” N 23º36’33” W, 907 msl, on woody debris of Lantana camara , 12 April 2013, M. Dueñas, M.P. Martín & M.T. Telleria, MPM3239 (paratype, MA-Fungi 87328!).

Other specimens examined: — CUBA, on wood debris, 1824 ( Cyathus poeppigii holotype, PC0167598!; PC017602!). FRENCH GUIANA, 1824, P.A. Poiteau ( Cyathus poeppigii, PC 0167608!). BRAZIL, Rio de Janeiro, 1873 ( Cyathus poeppigii, PC 0167601!). GUADELOUPE, French Antilles, 1873 ( Cyathus poeppigii, PC 0167598!). USA, Organ Mountains, 1873, Gardner ( Cyathus poeppigii, PC 0167606!). MADAGASCAR, Mananara, 02 September 1920, R. Decary ( Cyathus poeppigii, PC 0167607!). BRITISH GUYANA AND SURINAM, 1844, Schomburgk ( Cyathus limbatus type collection, PC0167583!; PC0167584!; PC0167585!).

Figures

FIGURE 2. Cyathus lignilantanae MA-Fungi 87327 (holotype) a. Basidiomata in natural environment. b. Lateral view of basidiomes in stereomicroscope. c. Peridioles. d. Section of peridiole. e. Spores.

FIGURE 3. Cyathus lignilantanae MA-Fungi 87328 (paratype) a. Basidiomata in natural environment. b. Lateral view of basidiomes in stereomicroscope. c. Peridioles. d. Section of peridiole. e. Spore.