identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
038587D8FF9EFFEAAFA4FE4AFE4D1919.text	038587D8FF9EFFEAAFA4FE4AFE4D1919.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Stagonospora samroiyotensis Bhagya. & Phukhams	<div><p>Stagonospora samroiyotensis Bhagya. &amp; Phukhams sp. nov. Fig. 2</p><p>Index Fungorum number: IF901771; Facesofungi number: FoF 15567</p><p>Etymology:—Name reflects the forest park, Khao Sam Roi Yot where the fungus was collected.</p><p>Holotype:— MFLU 24-0020</p><p>Saprobic on decaying leaves of  Typha sp. Sexual morph: Undetermined. Asexual morph: Conidiomata 240–315 × 170–250 μm, pycnidial, solitary, scattered, semi-immersed to immersed, subglobose to globose, brown to black, central ostiole. Conidiomatal wall 11–18 μm wide, outer layer composed of thick-walled, dark brown cells of textura angularis, internal wall composed with cells of textura angularis, light brown with a hyaline layer of cells of textura prismatica, bearing the conidiogenesis layer. Conidiophores reduced to conidiogenous cells. Conidiogenous cells 10– 11 × 4–6 μm, pyriform to truncate in shape, thin-walled, hyaline, smooth. Conidia 25–32 × 3–4 μm (x̄ = 28.5 × 3.5 μm, n = 30), oblong, cylindrical, 1-septate, constricted at the septa, rounded at the apex and tapered toward the base, guttulate, hyaline, smooth-walled.</p><p>Culture characteristics:—Conidia germinated on PDA within 12 hours. Germ tubes produced from the basal cell of the conidia. Colonies growing on PDA, reaching 20–25 mm in 6 weeks at 25 °C. Mycelia superficial, raised with papillate surface, lobate shape with smooth ending at edges, from above pale white from center to the edge; reverse dark brown at the center, orangey at the edge. Light yellow to light orange pigment diffusing in the agar.</p><p>Material examined:— THAILAND. Prachuap Khiri Khan Province: Pran Buri District,  Khao Sam Roi Yot Wetland on decaying and submerged stem of  Typha (Typhaceae) in lotic waters, 25 Feb 2023,  Amuhenage T. Bhagya, TBC11 C16 (MFLU 24-0020, holotype); ex-type living culture, MFLUCC 24-0052.</p><p>Notes:—In the phylogenetic analyses,  Stagonospora samroiyotensis (MFLUCC 24-0052) formed a separate lineage sister to three isolates of  S. uniseptata (CBS 135090) with 100% ML and 1.00 BYPP statistic support (Fig. 1).  Stagonospora samroiyotensis matches with the general concept of  Stagonospora . Our isolate is characterized by having globose pycnidial conidiomata, thick peridial wall composed of textura angularis and textura prismatica cell types, conidiophores reduced to conidiogenous cells with percurrent proliferation from the inner layer of the pycnidial wall. Conidiogenesis cells are doliiform, terminal, and holoblastic producing hyaline, cylindrical to ellipsoidal, straight or slightly curved and guttulate conidia (Li et al. 2016, Quaedvlieg et al. 2013, Tanaka et al. 2015). The conidiomata diameter of  S. samroiyotensis is larger (170–250 μm) than  S. uniseptata (150 μm), and  S. samroiyotensis has a higher L/ W ratio for the conidia ( S. samroiyotensis = 8.25,  S. uniseptata = 3.67). The conidiomata wall of  S. uniseptata consists only of red-brown cells of textura angularis (Quaedvlieg et al. 2013), but  S. samroiyotensis has inner hyaline cell layers in textura angularis and textura prismatica.  Stagonospora samroiyotensis has pyriform to truncate holoblastic conidiogenous cells while those of  S. uniseptata are phialidic.  Stagonospora uniseptata conidia are blunt, obtuse, and tapering towards the base with rounded ends (Quaedvlieg et al. 2013), while  S. samroiyotensis has more clavate conidia that are tapered and narrow towards the base (Fig. 2).  Stagonospora macropycnidia,  S. typhoidearum,  S. pseudoperfecta and  S. typhae have been reported from the same host plant family while  S. uniseptata was reported from  Carex acutiformis (Quaedvlieg et al. 2013) . The host, habitats, and detailed morphological comparison of asexual morph characters between  S. samroiyotensis,  S. uniseptata,  S. macropycnidia,  S. typhoidearum, and  S. typhae are provided in Table 3. Based on morph-molecular evidence we introduce  S. samroiyotensis as a novel species. No sexual stage has been observed.</p></div>	https://treatment.plazi.org/id/038587D8FF9EFFEAAFA4FE4AFE4D1919	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Bhagya, Amuhenage T.;Phukhamsakda, Chayanard;Tanaka, Kazuaki;Jones, E. B. Gareth	Bhagya, Amuhenage T., Phukhamsakda, Chayanard, Tanaka, Kazuaki, Jones, E. B. Gareth (2024): Morphology and multigene phylogeny reveal a novel Stagonospora species (Massarinaceae, Dothideomycetes) from Thailand. Phytotaxa 644 (4): 281-293, DOI: 10.11646/phytotaxa.644.4.4, URL: http://dx.doi.org/10.11646/phytotaxa.644.4.4
