Cookeina indica Pfister & R. Kaushal, Mycotaxon 20(1): 117 (1984)

Index Fungorum number: IF 106712

Saprobic on dead wood. Asexual morph: Undetermined. Sexual morph: Ascomata superficial, scattered. Disc cupulate, yellowish, up to 1.5 cm high, 2 cm broad, hymenium yellowish, smooth, receptacle surface yellowish to orange, nearly smooth. Stipe up to 1.0 cm long, 0.2 cm broad, white to yellowish. Medullary excipulum 170-310 µm broad, of hyaline cells of textura intricata, composed of 3-6 µm broad hyphae. Ectal excipulum 50-100 µm broad, hyaline cells of textura angularis to textura globulosa, 17-22 × 12-15 μm, J. Stipitipellis 70-110 µm, hyaline, comprised of 18-23 × 13-16 μm cells of textura angularis to textura globulosa, J. Paraphyses filiform, 2-4 µm broad, hyaline, septate, branched, J. Asci 305-357 × 13-16 µm, 8-spored, operculate, subcylindrical to clavate, a short pedicellate, J. Ascospores [20/1/1, in H2O] (24.2-)27.7-32.2(-34.5) × (7.4-)8.4-9.9(-10.4) (Q = 2.94-4.09, Q = 3.39 ± 0.35), ellipsoid, uniseriate, inequilateral, inamyloid, 1–3guttulate, ornamentation with striae arranged longitudinally.

Material examined – Thailand, Ranong, on unidentified dead wood, 5 October 2017, M. Zeng, ST02 (MFLU 200548).

GenBank numbers – ITS: MT941004, LSU: MT941005.

Known distribution (based on molecular data) – China, India, Thailnd (Ekanayaka et al. 2016, Kropp 2017, this study)

Known hosts (based on molecular data) – dead wood (Ekanayaka et al. 2016, Kropp 2017, this study)

Notes – This species is characterized by cupulate apothecia, a nearly smooth hymenium and ellipsoid, inequilateral, guttulate ascospores with longitudinal striae. The similar species C. cremeirosea has pinkish apothecia, and smooth-walled ascospores (Ekanayaka et al. 2016, Kropp 2017).

Figure 1. Cookeina indica (MFLU 200548, new geographical record). a–f Typic mature specimens. g Stipitipellis. h Receptacle surface of pileus. i Asci and paraphyses. j Paraphyses. k–m Asci (l Asci in Congo Red, m Asci in Melzer’s reagent). n Apex of asci in Congo Red. o–r Ascospores. Scale bars: d = 1000 μm. e,f = 2000 μm. g, h, j = 30 μm. i, k–m = 100 μm. n, o, q, r = 10 μm, p = 40 μm.