Halocryptovalsa salicorniae Dayarathne & K. D. Hyde 2020, sp. nov.
Creators: name: Dayarathne, Monika C.
name: Wanasinghe, Dhanushka N.
name: Devadatha, B.
name: Abeywickrama, Pranami
name: G, E. B.
name: Jones, areth
name: Chomnunti, Putarak
name: Sarma, V. V.
name: Hyde, Kevin D.
name: Lumyong, Saisamorn
name: C., Eric H.
name: Mckenzie
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Sordariomycetes
Xylariales
Diatrypaceae
Halocryptovalsa
Halocryptovalsa salicorniae

description: Halocryptovalsa salicorniae Dayarathne & K.D.Hyde, sp. nov.   (Fig. 14)  
MYCOBANK. — MB 824309.  
FACESOFFUNGI NUMBER. — FoF 03948.  
ETYMOLOGY. — Referring to the host genus, Salicornia.  
CULTURE CHARACTERS. — Reaching 2 cm within 7 days on PDA, when incubated at 25 °C, circular, flat, with diffuse margin, white, and becoming yellowish white, bright yellow to dull yellow with age.  
 MATERIAL EXAMINED. — Thailand, Chang Wat Prachuap Khiri Khan Province, Amphoe Bang Saphan, Tambon Thong Chai, on decaying Salicornia sp. stem, 16.VIII.2015, Monika Dayarathne, CHAM018 (MFLU 16-0551 holotype); ex-type living culture, MFLUCC 15-0185 and ICMP.   
DISTRIBUTION. — Thailand.  DESCRIPTION  
 Saprobic on decaying stem of Salicornia sp.    Sexual morph   
 Stromata. Poorly developed, flask-shaped, black, immersed in the surface layers of the host tissue, raising the surface of the substrate in little bumps, with protruding necks, substrate slightly modified between ascomata or more or less necrotic when they are close together.   
 Ascomata. 230-300 µm high, 140-168 µm diam. (ẍ = 265 × 154 µm, n = 5), uni-perithecial, immersed in stromatic tissues, globose to subglobose, dark brown to black, ostiolate, papillate; papilla 76-90 µm high, 55-62 µm wide (ẍ = 83 × 58.5 µm, n = 20), globular-conical, immersed in a wide-spreading entostroma in the surface layers of the host tissue, periphysate.   
 Peridium. 11-16 µm wide (ẍ = 13 µm, n = 20), comprising an outer, brown, thick-walled layer, consisting of polygonal melanized cells, brown to dark-brown, interspersed with cells of the substrate; and inner, hyaline, thick-walled, several cell layers of textura angularis.   
 Hamathecium. Comprising aseptate paraphyses, narrowing and tapering towards the apex.   
 Asci. 87-95 × 9-13 µm (ẍ = 91 × 11 µm, n = 20), multispored, unitunicate, with narrow, thin-walled pedicel, with cylindrical, thick-walled, swollen upper portion, apex flat, with J-, cylindrical, conspicuous apical ring.   
 Ascospores. 3-5 × 1-2 µm (ẍ = 4 × 1.5 µm, n = 20), hyaline, allantoid, straight or slightly curved, unicellular, thin-walled, with small fat globules at the ends, smooth-walled.    Asexual morph   
Undetermined.  NOTES  
 Phylogenetic analyses with ITS and ITS+Btub sequences of Halocryptovalsa salicorniae Dayarathne & K.D.Hyde, sp. nov., proved their conspecificity and placement in Diatrypaceae as a separate species from all other genera (clade J) (Figs 1; 2). According to our phylogenetic analyses with ITS and combined ITS+Btub, stability of this genus within the family needs to be re-considered with more taxon sampling as taxa grouped in different positions. Our second analysis with LSU+SSU sequence data confirmed its phylogenetic relationship to Halocryptovalsa avicenniae, comb.nov. (Figs 3; 4). Morphologically,they differ in length and colour of ascospores (5-8 µm, yellow-brown to brown in Hcr. avicenniae and3-5 µm, hyaline in Hcr. salicorniae). Because Halocryptovalsa avicenniae, comb. nov., and Hcr. salicornia e and distantly placed from Cryptovalsa species, we accommodated these species in a new genus Halocryptovalsa Dayarathne & K.D.Hyde, gen. nov. Comparative morphological features of this species and Halocryptovalsa avicenniae, comb. nov., Cryptovalsa halosarceicola, C. mangrovei and C. suaedicola are summarized in Table 4.
description: Published as part of Dayarathne, Monika C., Wanasinghe, Dhanushka N., Devadatha, B., Abeywickrama, Pranami, G, E. B., Jones, areth, Chomnunti, Putarak, Sarma, V. V., Hyde, Kevin D., Lumyong, Saisamorn, C., Eric H. & Mckenzie, 2020, Modern taxonomic approaches to identifying diatrypaceous fungi from marine habitats, with a novel genus Halocryptovalsa Dayarathne & K. D. Hyde, gen. nov., pp. 21-67 in Cryptogamie, Mycologie 20 (3) on page 52, DOI: 10.5252/cryptogamie-mycologie2020v41a3, http://zenodo.org/record/7815042