Lepiota thailandica (Agaricaceae), a new species from Thailand

Phytotaxa ◽  
2016 ◽  
Vol 245 (4) ◽  
pp. 262
Author(s):  
Phongeun Sysouphanthong ◽  
JIAYU GUO ◽  
KEVIN D. HYDE ◽  
JIANCHU XU ◽  
PETER E. MORTIMER

Lepiota thailandica, widely distributed across northern Thailand, is described as a new species and is recognizable by its tiny basidiomata, convex or umbonate pileus, covered with reddish brown squamules on a white fibrillose background, free lamellae, white cylindrical stipe sometimes with brown squamules at the basal zone, hyaline and ellipsoid to oblong ovoid basidiospores, clavate to utriform cheilocystidia, trichodermal structure of squamules on the pileus and stipe, and clamp-connections in all tissues. Morphological characters and nrITS sequence data indicate that the species belongs in the section Ovisporae, subsection Felininae, which contains species with a trichodermal pileus covering made up of long and short elements.

2020 ◽  
Vol 4 (2) ◽  
pp. 71-77
Author(s):  
Markku J. Pellinen ◽  
Reza Zahiri ◽  
Pasi Sihvonen

A new species of Sacada from northern Thailand is described: S. chaehomensissp. nov. Pellinen & Zahiri (Lepidoptera: Pyralidae, Pyralinae). Morphological characters and DNA barcode data are provided for the new species, with a morphological comparison to S. dzonguensis and S. umtasorensis, and a DNA-barcode comparison to S. ragonotalis and S. albioculalis, respectively. After this addition, the current number of valid species in the genus Sacada is 43.


Phytotaxa ◽  
2017 ◽  
Vol 316 (1) ◽  
pp. 67 ◽  
Author(s):  
NATTAPON NOPPORNCHAROENKUL ◽  
THAYA JENJITTIKUL

Kaempferia noctiflora, another precocious flowering species of Kaempferia subgen. Protanthium (Zingiberaceae) from Northern Thailand is described and illustrated. Pure white flowers with nocturnal anthesis and a tinged purplish red patch along the midvein of the upper surface of the leaves are the unique characters of this new taxon. The morphological characters of K. noctiflora are compared to closely related species and a key to Thai precocious flowering Kaempferia species is also provided.


Phytotaxa ◽  
2020 ◽  
Vol 437 (1) ◽  
pp. 14-22
Author(s):  
YUAN S. LIU ◽  
JIAN-KUI (JACK) LIU ◽  
PHONGEUN SYSOUPHANTHONG ◽  
KEVIN D. HYDE ◽  
SAISAMORN LUMYONG

Xanthagaricus siamensis, a new species in the family Agaricaceae, was discovered in northern Thailand and is here introduced based on its morphological features and molecular data. It is characterized by small to medium-sized basidiomata, a convex to plano-convex with depressed center pileus when mature, the presence of greyish orange to violet-brown fibrillose squamules on the pileus, lamellae that start out white, change to pinkish white when damaged, then change to dull green with age. Additionally, the annulus is fugacious, and the pileipellis is recognized as a cutis which morphologically distinguishes it from all other known Xanthagaricus. Phylogenetic analysis of the internal transcribed spacer region (ITS) and the large subunit of the nuclear ribosomal DNA (nrLSU) sequence data indicated that the three specimens of X. siamensis form a distinct lineage within Xanthagaricus, and they formed a well-supported clade representing the genus Xanthagaricus. Detailed illustrations of macro- and micro-morphological characteristics and descriptions are provided, as well as other relevant molecular evidence.


Phytotaxa ◽  
2014 ◽  
Vol 176 (1) ◽  
pp. 102 ◽  
Author(s):  
HIRAN A. ARIYAWANSA ◽  
ERIO CAMPORESI ◽  
KASUN M. THAMBUGALA ◽  
AUSANA MAPOOK ◽  
JI-CHUAN KANG ◽  
...  

Didymosphaeriaceae is a ubiquitous fungal family that is reported to include saprobic, endophytic and pathogenic species associated with a wide variety of substrates. The family is characterized by 1-septate ascospores and trabeculate pseudoparaphyses, mainly anastomosing above the asci. In recent treatments Appendispora, Didymosphaeria, Roussoella, Phaeodothis and Verruculina were placed in the family. The aim of the present study is to delineate phylogenetic lineages within Didymosphaeriaceae and allied genera. A new species, Didymosphaeria rubi-ulmifolii, was isolated and identified based on morphological characters and phylogenetic analyses of partial 18S nrDNA and 28S nrDNA nucleotide sequence data. Didymosphaeria rubi-ulmifolii clustered with Montagnulaceae as a separate genus, while two putative strains (HKUCC 5834 and CMW 22186) of D. futilis from GenBank clustered with Cucurbitariaceae and Didymellaceae, respectively. The new species is characterized by immersed to slightly erumpent ascomata immersed under a clypeus, a peridium with compressed cells of textura intricata, long trabeculate pseudoparaphyses, anastomosing mostly above the asci and brown, 1-septate ascospores with granulate ornamentation. Phylogenetic analysis in combination with morphology and a review of literature show that Appendispora, Phaeodothis, Roussoella and Verruculina should be excluded from the family. Phaeodothis belongs in Montagnulaceae, Verruculina in Testudinaceae, while Appendispora and Roussoella belong in Roussoellaceae. The position of Didymosphaeriaceae as a distinct family, based on 1-septate ascospores and trabeculate pseudoparaphyses, mainly anastomosing above the asci is doubtful. Fresh collections of more Didymosphaeria strains are needed for epitypification and to obtain sequence data to establish if this family can be maintained.


ZooKeys ◽  
2020 ◽  
Vol 926 ◽  
pp. 133-158
Author(s):  
Thy Neang ◽  
Adam Henson ◽  
Bryan L. Stuart

Cyrtodactylus phnomchiensissp. nov. is described from Phnom Chi, an isolated mountain in Prey Lang Wildlife Sanctuary, Kampong Thom Province, Cambodia. The new species is recognized by having a unique combination of morphological characters, including snout-vent length 76.1–80.7 mm; paravertebral tubercles 31–36; ventral scales 45–54; enlarged femoral scales 0–8, without pores; enlarged precloacal scales 7–10, bearing pores 4–5 in males, pits 1–7 in females; the posterior border of nuchal loop unbroken and pointed, bordered anteriorly and posteriorly by a broad yellow or yellowish white band; and yellow spots on top of head. The new species also represents a divergent mitochondrial DNA lineage within the C. irregularis complex that is closely related to C. ziegleri, but the phylogenetic relationships among the new species and two divergent mitochondrial subclades within C. ziegleri are not resolved based on available sequence data. Cyrtodactylus phnomchiensissp. nov. is the only member of the C. irregularis complex known to occur west of the Mekong River. The new species may be endemic to Phnom Chi, and likely faces imminent conservation threats.


Phytotaxa ◽  
2021 ◽  
Vol 480 (3) ◽  
pp. 237-250
Author(s):  
ALLEN GRACE T. NIEGO ◽  
PHONGEUN SYSOUPHANTHONG ◽  
NARITSADA THONGKLANG ◽  
KEVIN D. HYDE ◽  
MONTHIEN PHONEMANY ◽  
...  

A new species and a first record of Volvariella are reported from Thailand based on morphological and phylogenetic evidence. The most important features that distinguish Volvariella rostricystidiata sp. nov. are the broadly clavate to obovoid cheilocystidia with a rostrate apex and the scattered, slender and usually fusiform pleurocystidia, which lack a rostrum. Volvariella pulla, recently described from Vietnam, is reported here from northern Thailand based on morphology and sequence data. Combined ITS and nrLSU gene regions were analyzed to confirm the placement and infer the phylogenetic affinities of the two studied species.


Phytotaxa ◽  
2016 ◽  
Vol 253 (1) ◽  
pp. 71 ◽  
Author(s):  
ZONG-LONG LUO ◽  
ALI H. BAHKALI ◽  
XIAO-YING LIU ◽  
RUNGTIWA PHOOKAMSAK ◽  
YONG-CHANG ZHAO ◽  
...  

Poaceascoma aquaticum sp. nov. (Lentitheciaceae) was found on decaying bamboo submerged in a freshwater stream in northern Thailand. The new species is introduced based on its unique morphology and phylogeny. Poaceascoma aquaticum is characterized by black, semi-immersed or erumpent, papillate ascomata, bitunicate, cylindrical to cylindric-clavate, short pedicellate asci and filiform, pale brown to brown ascospores. Phylogenetic analyses of combined LSU, SSU and RPB2 sequence data shows that Poaceascoma aquaticum forms a robust clade with P. helicoides in the family Lentitheciaceae (Pleosporales). Poaceascoma aquaticum is described, illustrated and compared with related taxa.


Phytotaxa ◽  
2019 ◽  
Vol 422 (2) ◽  
pp. 144-156
Author(s):  
LING-LING LIU ◽  
JING YANG ◽  
NING-GUO LIU ◽  
YA-YA CHEN ◽  
XIAO-XIA GUI ◽  
...  

During a survey of freshwater fungi in Guizhou Province, China, a collection from a submerged decaying twig in Baihua Lake was identified as a new species of Sporidesmium sensu lato based on morphological characters and phylogenetic analyses of combined LSU, SSU, ITS, TEF1α and RPB2 sequence data. Phylogenetic analyses supported its placement in Sordariomycetes but the fungus grouped distant from Sporidesmium sensu stricto, and its ordinal or familial position within the class remained inconclusive. Sporidesmium guizhouense sp. nov. is introduced with an illustrated account and notes on its taxonomy, phylogeny and systematic position are provided.


Zootaxa ◽  
2008 ◽  
Vol 1948 (1) ◽  
pp. 57-68 ◽  
Author(s):  
ERIC N. SMITH ◽  
JORGE A. FERRARI-CASTRO

We describe a new species of pitviper of the genus Atropoides from the Sierra de Botaderos and La Muralla, Honduras. The new species is easily distinguished from all other members of the genus, except A. picadoi from Costa Rica and Panama, by possessing more ventral scales (140 vs. 103–138). This new species differs from A. picadoi in being relatively small, less than 600 mm in total length (vs. reaching > 750 mm), having the posterior third of the body venter heavily melanized (vs. more than 50%), less than 50% of the underside of the tail melanized, and the postorbital stripe covering more than 50% of only one or two scales from the first temporal row and covering completely only the last scale of the row, at most (vs. 3–4 more than 50% melanized and the last two scales in the row usually completely melanized). In addition to morphological characters, molecular evidence also differentiates this new species from the other species of Atropoides (as recognized by Castoe et al. 2005). Using mitochondrial gene sequence data, they found the new species described herein to represent the sister species of A. occiduus, with 5.7 % sequence divergence separating these two taxa.


Zootaxa ◽  
2018 ◽  
Vol 4438 (3) ◽  
pp. 551
Author(s):  
JUNLI YAO ◽  
CORNELIS VAN ACHTERBERG ◽  
MICHAEL J. SHARKEY ◽  
ERIC G. CHAPMAN ◽  
JIAHUA CHEN

Neurolarthra Fischer, 1976, is a small braconid genus with two described species. The genus is revised using morphological characters and a phylogenetic analysis of COI sequence data; GenBank accession numbers of seven COI sequences from two species are included. A new species from Thailand is described and illustrated: N. karensharkeyae Yao n. sp. Neurolarthra Fischer and N. procera are reported for the first time from Thailand. A key to species of the genus Neurolarthra is presented. 


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