Gastrochilus obovatifolius (Orchidaceae, Aeridinae), a new species from the Daba Mountains of Chongqing, China

PhytoKeys, Journal Year: 2025, Volume and Issue: 252, P. 25 - 40

Published: Feb. 7, 2025

Gastrochilus obovatifolius , a new species discovered in the Dabashan of northeast Chongqing (China), is described and illustrated. The novelty morphologically resembles G. affinis balangshanensis heminii having glabrous smooth epichile. but can be distinguished by unique obovate shape leaves, smaller epichile, flower color. results molecular phylogenetic analysis, based on nuclear ribosome internal transcribed spacer (nrITS) four chloroplast DNA fragments ( mat K, psb A– trn H, M– D, L–F) 55 species, support inclusion sect. Microphylli, being most closely related to from Sichuan. trunk epiphyte evergreen broad-leaved forest.

Language: Английский

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Euonymus chengduanus (Celastraceae), a New Species Unexpectedly Discovered in an Urban Forest Park in the Megacity of Chengdu, West China

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: April 1, 2025

The establishment of native species-dominated forest parks and investment into vegetation surveys taxonomic research has not only enabled the discovery relictnative species affected by urban expansion but also facilitated targeted conservation efforts. During investigations on plant diversity status in Longquan Mountain Urban Forest Park eastern Chengdu Metropolis, West China, an unidentified Euonymus (Celastraceae) was encountered. It resembles both E. chloranthoides aquifolium vegetative appearance, it exclusively 4-merous flowers. A phylogenetic analysis incorporating 51 taxa Glyptopetalum supported its recognition as a new species, positioned phylogenetically sister to clade containing close aquifolium. To acknowledge expanded urbanization recently planned mountain park, is described chengduanus, diagnostic morphological characters are compared with aquifolium, chloranthoides, ilicifolium. This implies that even intensively anthropogenic-impacted areas adjacent large cities, undocumented may still exist. Consequently, this tentatively assessed Critically Endangered (CR) emphasize urgency protection raise public awareness concerning biodiversity degraded ecosystems.

Language: Английский

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Gastrochilus balangshanensis (Orchidaceae, Aeridinae), a new subalpine epiphytic orchid from the Mountains of Southwest China

PhytoKeys, Journal Year: 2024, Volume and Issue: 247, P. 123 - 135

Published: Oct. 11, 2024

Gastrochilus balangshanensis , a new orchid species from the Balang Mountain, Sichuan Province, Southwest China, is described and illustrated. It morphologically resembles G. affinis but differs in having shorter stems, reniform epichile sub-hemispherical hypochile (spur), obtuse-rounded at apex. The results of molecular phylogenetic analyses based on nuclear ribosome internal transcribed spacer (nrITS) four chloroplast DNA markers ( mat K, psb A– trn H, M– D L–F) 50 indicate that closely related to heminii bernhardtianus also endemic Hengduan Mountains. novelty branch trunk epiphyte mixed coniferous forest.

Language: Английский

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Gastrochilus heminii (Orchidaceae, Epidendroideae), a new species from Sichuan, China, based on molecular and morphological data

PhytoKeys, Journal Year: 2022, Volume and Issue: 215, P. 95 - 106

Published: Dec. 16, 2022

Gastrochilusheminii (Orchidaceae), a new orchid species from Sichuan Province, Southwest China, is described and illustrated. It morphologically resembles G.affinis G.yei, but differs markedly the former in having thinner slightly rolled downwards reniform epichile central thickened purple-red mat with irregular folds (vs. subtriangular curves upwards, 2 thick, brown to purplish-brown median ridges base apex), can be clearly distinguished latter by lobed apex subconical hypochile bilobed that splits into two conical protrusions semi-rounded not bilobed). The results of molecular phylogenetic analysis based on nuclear ribosome internal transcribed spacer (nrITS) four chloroplast DNA fragments (matK, psbA-trnH, psbM-trnD, trnL-F) 36 Gastrochilus showed G.heminii was closely related G.distichus.

Language: Английский

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Plants of Vandeae II: Phalaenopsis Blume to Pennilabium J. J. Sm.

Published: Jan. 1, 2023

This chapter describes 73 species in nine genera from Phalaenopsis to Pennilabium Vandeae distributed China, including morphology, flowering period, habitat, conservation status, and distribution.

Language: Английский

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Characterization of the complete chloroplast genome of Gastrochilus sinensis (Orchidaceae, Epidendroideae), a beautiful epiphytic orchid from China

Mitochondrial DNA Part B, Journal Year: 2024, Volume and Issue: 9(1), P. 100 - 103

Published: Jan. 2, 2024

Gastrochilus sinensis is a beautiful epiphytic orchid with high ornamental value. In this study, the first complete chloroplast genome sequence of G. was determined using next-generation sequencing (NGS). The de novo assembled 148,020 bp in length, including pair inverted repeat regions (IRs; 25,987 bp), small single-copy region (SSC; 11,045 and large (LSC; 85,001 bp). encodes 109 unique genes, 75 protein-coding genes (PCGs), 30 tRNA four rRNA genes. total GC content 36.8%. phylogenetic analysis showed close relationship between formosanus species. provides fundamental information for genetic diversity relationships Gastrochilus.

Language: Английский

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