Longicorpus striatispora
Longicorpus striatispora
(K.D. Hyde) S.N. Zhang, K.D. Hyde & J.K. Liu MycoKeys 49: 118 (2019)
Classification: Ascomycota-Pezizomycotina-Dothideomycetes-Pleosporomycetidae-Pleosporales-Striatiguttulaceae-Longicorpus
Host species: Nypa fruticans, Phoenix paludosa
Epitype: MFLU 18-1580
Known distribution: North Sumatra, Thailand (Chanthaburi, Krabi, Ranong)
IF Number: IF828277 Mycobank Number: 828277 FOF Number: FoF05037
Description
Saprobic on mangrove palms. Sexual morph: Ascomata in vertical section (including short papilla) 300–500 µm high, 230–560 µm diameter, (x̅ = 405.3 × 376.6 µm, n = 15), long neck up to 1285 µm, black, scattered to gregarious, immersed, and erumpent through host epidermis by a papilla or a short to long neck, sometimes visible as a slightly raised, dome-shaped area, with a clypeus comprises host tissue and fungal hyphae, ampulliform, subglobose or conical, uni-loculate, coriaceous to carbonaceous, ostiolate, periphysate, papillate, glabrous or somewhat interwoven pale brown hyphae or setae, lying at apex of the neck. Peridium 11–15 µm wide, composing of brown to pale brown angular cells, thicker at the rim towards the apex. Hamathecium comprising up to 1.5 µm wide, septate, branched, filamentous, trabeculate, anastomosing pseudoparaphyses, embedded in a gelatinous matrix. Asci 85–160 × 10–17 µm (x̅ = 122.7 × 13.7 µm, n = 22), 8-spored, bitunicate, cylindric-clavate, pedicellate, apically rounded, with an ocular chamber. Ascospores 24–45 × 7–8.8 µm, (x̅ = 34.2 × 7 µm, n = 40), uniseriate to biseriate, hyaline to brown, fusiform, 1–3-septate, the upper middle cell slightly swollen towards the central septate, middle cells larger and longer, end cells paler and smaller, straight or slightly curved, striate, guttulate, surrounded by a mucilaginous sheath. Asexual morph: Undetermined.
Culture conditions: Colonies on PDA attaining 12 mm diameter within 21 days at 25 ºC under natural light, velvety, centrally raised, irregular to circular in shape, greenish grey and mixed with milky white mycelium at the edge of a colony, the reverse dull green or grey olivaceous.