Coll. HKAS 74335
© Q. Zhao | | | | | |
Helvella zhongtiaoensis J.Z. Cao & B. Liu, Mycologia, 82 (5): 642 (1990).
Basionym Helvella zhongtiaoensis J.Z. Cao & B. Liu, Mycologia, 82 (5): 642 (1990).
Diagnosis Pileus 3–7.5 cm latus, 1.5–5.5 cm altus, irregulariter ephippioideus, margine incurvus, deinde porrectus et frequenter fissuratus; hymenium griseum vel pallide griseum in statu humectato, pallide griseum vel griseo brunneum in statu sicco, rugoso-convolutum; superficies exterior pileicum hymenio brunnea vel griseo-brunnea, pubescentia, costata. Stipes 3–9 cm longus, 0.7–2.5 (–3.5) cm latus, profunde costatus, plerumque bimarginatus, albus, aequus. Excipuli part medullaris 200–250 µm crassa, textura intricata, hyphis hyalinis vel subhyalinis; leptodermis, septatis, ramificatis, usque ad 2.5–5 µm diam. Excipuli exterior pars 120–150 µm crassa, textura angularis, cellulis interioribus subglobosis, 10–25 µm diam, cellulis terminalibus cylindracis vel clavatis, fasciculatis, fasciae subbrunneae, usque ad 150 µm longae. Asci cylindrici 250–300 × 13.5–15 µm, 8-spori. Ascospore ellipsoideae, 18–21 × 11–13 µm, glabrae, hyalinae. Paraphyses filamentosae, septatae, 2.5–5 µm diam, tumidulae ad apicem, usque ad 5–7.5 µm diam.
Type MHSU 1802 - holotypus
MycoBank 126684
Literature
Cao J.Z., Liu B. 1990. A new species of Helvella from China. Mycologia, 82 (5): 642-643.
Zhao Q., Tolgor B., Zhao Y., Yang Z.L., Hyde K.D. 2015. Species diversity within the Helvella crispa group (Ascomycota: Helvellaceae) in China. Phytotaxa, 239 (2): 130-142.
Classification: Helvellaceae, Helvella
Created on 11/04/2016.
Updated on 07/08/2023.
