Sammeyersia grandispora (Meyers) S.Y. Guo, E.B.G. Jones & K.L. Pang, Bot. Mar.: 0.1515/bot-2016-0118, 15 (2017)
Index Fungorum number: IF 820461
Saprobic on submerged mangrove wood. Sexual morph: Ascomata 100–350 × 135–300 µm, globose or subglobose to pyriform, immersed or superficial, ostiolate, with a long neck, brown to black, solitary or gregarious. Necks upto 700–800 long, cylindrical, straight or curved, sometimes two on one ascoma. Peridium 20–35 µm wide, two-layered, composed of an outer layer of textura angularis and an inner layer of elongated cells with large lumina; inner layer thickened at the base of the neck, composed of cells with thickened and highly melanized wall. Paraphyses absent. Asci 312–450 µm (x̅ = 420, n = 10), 8-spored, elongate-fusiform or cylindrical, unitunicate, thin-walled, early deliquescing. Ascospores 312–450 × 2–4 µm (x̅ = 370 × 3.8 μm, n = 10), filamentous, curved, hyaline, tapering at each end into an elongate, conical process or apical chamber, acute or rounded, filled with mucus that is released through an apical pore. Asexual morph: Undetermined.
Material examined – Thailand, Phetchaburi Province, Hat Chao Samran, 47° 72506’ E, 40° 25038’ N, 0 m asl., on intertidal decayed wood of Rhizopora sp. at a mangrove stand, 28 August 2015, M. Dayarathne CHAM005 (MFLU 16-1172).
GenBank numbers – LSU: MN592678, SSU: MN592679.
Known distribution (based on molecular data) – Belize, India, Malaysia, Taiwan (Schoch et al. 2009, Abdel-Wahab et al. 2018), Thailand (this study)
Known hosts (based on molecular data) – Avicennia marina, mangrove wood, Rhizophora apiculata, R. mucronata, Rhizophora sp., Sonneratia acida, S. apetala (Schoch et al. 2009, Jones & Pang 2012, Abdel-Wahab et al. 2018, this study)
Notes – Lulworthia grandispora is a mangrove inhabiting species, often found in tropical and subtropical countries (Jones & Pang 2012). This was synonymized to Sammeyersia grandispora and identified by the length of its ascospores, which is over 400 μm (Abdel-Wahab et al. 2017). Our new isolate (MFLU 16-1172) groups with the S. grandispora isolates deposited in the GenBank (Fig. 59). Therefore, depending on both morphological and phylogenetic data, we identified our new isolate as S. grandispora.
![](https://www.facesoffungi.org/wp-content/uploads/2020/11/Sammeyersia-grandispora-212x300.jpg)
Sammeyersia grandispora (MFLU 16-1172, new host record). a Ascomata on wood surface. b Section through ascoma in wood. c Peridium composed of thick-walled angular cells. d, f Asci. g Filamentous ascospore. h Polar end chamber of ascospore. Scale bars: a = 500 µm, b, d–f = 100 µm, c, g = 10 µm.