338 Persoonia – Volume 45, 2020
Coprinopsis rubra Fungal Planet description sheets 339
Fungal Planet 1148 – 19 December 2020
Coprinopsis rubra Örstadius, E. Larss. & L. Nagy, sp. nov.
Etymology. The epithet refers to the red cap and veil colour. Typus. Sweden, Halland, Steninge, Lövängen, about 15 km N of Halmstad, on cow dung, 28 Aug. 2019, B. Larsson (EL387-19, holotype GB-0207585, Classification — Psathyrellaceae, Agaricales, Agaricomy- ITS-LSU sequence GenBank MT800814, MycoBank MB836567). cetes. Additional materials examined. Sweden, Halland, Varberg, Vadkärr, on cow Basidiomata small, coprinoid. Pileus at first ellipsoid, campanu- dung, 17 Aug. 2018, K. Persson (LÖ73-18, GB); Halland, Steninge, Lövän- gen, about 15 km N of Halmstad, on cow dung, 30 Aug. 2019, B. Larsson & late, then expanded convex to plane, umbonate, 6–12 mm wide, K. Persson (LÖ47-19, GB-0207595); Halland, Mannarp, on cow dung, 18 Sept. radially grooved, red to pale red below the veil, when mature or 2009, L. Nagy, M. Jeppson & T. Knutsson (NL-2758). old pallescent becoming grey tinged; veil vividly red to dark red, covering greater part of surface, splitting into flocci especially at Notes — Coprinopsis rubra can be recognised by the striking centre. Lamellae free, medium spaced, L = c. 25, when young dark red colour of its cap and veil, coprophilous habitat, and whitish, becoming brown to blackish, with pale red edge, partly rather small spores. The species belongs to subsection Lanatuli deliquescent. Stipe 12–20 × 1–2 mm, thickened towards base, (Uljé 2005) characterised by a hairy-floccose veil made up of not root-like extended, concolorous with cap at base, with pale elongate elements. Subsection Alachuani differs in having di- red to whitish upper part, fibrillose, with flocculose veil remnants verticulate often thick-walled elements (Uljé 2005). Coprinopsis particularly towards base. Smell not distinctive; taste not re- erythrocephala is morphologically closely related but can be corded. Basidiospores 8–10 × 4.8–5.4 µm (av. 8.8–9.2 × 5.1 separated by larger basidiomata, a soon disappearing veil, µm, Qav = 1.7–1.8), oblong, ellipsoid, ovoid, sometimes slightly larger pleurocystidia, larger spores, and a non-coprophilous irregular, in profile flattened on one side, neither amygdaliform habitat. In the phylogenetic analysis C. rubra comes out clos- nor phaseoliform, rarely broken, in water red (Mu. 2.5YR 4/8, est to an ITS sequence of an unknown species of Coprinopsis Munsell 1975), with small, central, rather distinct germ pore. from Brazil, and in the sister clade to C. erythrocephala. Basidia 4-spored, 15–30 × 7–8 µm, surrounded by (3–)4(–5) pseudoparaphyses. Pleurocystidia 35–65 × 20–32 µm, subu triform, ventricose, clavate, sphaeropedunculate, numerous, pale. Cheilocystidia 15–50 × 12–30 µm, similar to pleurocyst- idia in shape, ellipsoid, numerous. Pileipellis a cutis made up of hyphae with short, 7–14 µm wide cells. Veil cells 20–80 × 5–30 Coprinopsis uliginicola C 2 0 µm, pale to moderately red intracellular pigmented; surface with 100 dark red spots, irregularly and loosely attached, disappearing Coprinopsis cineraria C C 2 2 when gently tapping on the coverslip. Clamp connections seen at stem base mycelium and veil hyphae. Coprinopsis atramentaria F Habitat & Distribution — Growing scattered on cow dung in 66 82 Coprinopsis jonesii 2 pastures, only manured from the grazing animals. So far known Coprinopsis lagopus F F 0 0 from three localities in Halland, a southern province of Sweden. Coprinopsis sp. 62 77 Coprinopsis rubra MT800814 HOLOT PE Coprinopsis erythrocephala FN 2 FN 84 62 Coprinopsis krieglsteineri F 0 Coprinopsis pannucioides 2 99 Coprinopsis canoceps C 2 Coprinopsis submicrospora C 2 84 50 Coprinopsis marcescibilis 2
64 Coprinopsis musae C 2 Coprinopsis nivea 100 Coprinopsis pseudonivea F F 0 2 Parasola schroeterii N 100 Parasola plicatilis F 2 F 0 Agrocybe pusiola 2
20 0 Colour illustrations. Sweden, Halland, Steninge, Lövängen, a pasture Phylogram obtained using PAUP* v. 4.0a (Swofford 2003) based on ITS from the type locality. Basidioma (Varberg, Vadkärr, LÖ73-18); basidiomata and LSU sequence data showing the position of C. rubra in the Atramentarii (Steninge, holotype); spores; pleurocystidia (above) and cheilocystidia (be- and Lanatuli clades (Nagy et al. 2013). Bootstrap values are indicated on low); veil cells. Scale bars = 1 cm (basidiomata), 10 µm (spores, cystidia and branches and the holotype is marked in bold. veil).
Leif Örstadius, Lyckans väg 39A, S-29143 Kristianstad, Sweden; e-mail: [email protected] Ellen Larsson, Biological and Environmental Sciences, University of Gothenburg, Box 461, 40530 Göteborg, Sweden, and Gothenburg Global Biodiversity Centre, Box 461, SE40530 Göteborg, Sweden; e-mail: [email protected] László G. Nagy, Institute of Biochemistry, Biological Research Center, Temesvari krt 62, H-6726 Szeged, Hungary; e-mail: [email protected]
© 2020 Naturalis Biodiversity Center & Westerdijk Fungal Biodiversity Institute