scholarly journals Two new taxa of Gesneriaceae in the karst regions in North Vietnam

PhytoKeys ◽  
2020 ◽  
Vol 157 ◽  
pp. 217-226
Author(s):  
Wen-Hong Chen ◽  
Shi-Wei Guo ◽  
Hieu Quang Nguyen ◽  
Li Chen ◽  
Yu-Min Shui

One new species and one new variety of Gesneriaceae in Vietnam are described, viz. Paraboea sinensis var. glabrissimavar. nov. and Primulina xuansonensissp. nov. These two new taxa grow in limestone regions in North Vietnam. The former new variety differs from Paraboea sinensis (Oliv.) Burtt var. sinensis in its young leaf abaxially, stem and peduncle sparsely and thin pannose, acute top of leaves, pistil glandular-pubescent or pubescent. The latter new species differs in its bracts 1.6–2.5 × 1.3–1.5 cm, corolla 3–3.5 cm long, corolla tube slightly curved near the base and inflated on the adaxial surface near the corolla lobes, and corolla abaxial lip lobes rounded. The two new taxa grow at Xuan Son National Natural Reserve, North Vietnam and remain undisturbed with low risk of extinction.

2019 ◽  
Vol 64 (2) ◽  
pp. 177-182
Author(s):  
W.J.J.O. de Wilde ◽  
B.E.E. Duyfjes

Formal description of some new taxa from Indochina include in Lythraceae a new species of Lagerstroemia, L. poilanei W.J.de Wilde & Duyfjes with two varieties, var. poilanei andvar. grandis W.J.de Wilde & Duyfjes, two new species of Rotala, R. saxatilis W.J.de Wilde & Duyfjes and R. protracta W.J.de Wilde & Duyfjes and a new variety of Rotala indica, Rotala indica (Willd.) Koehne var. minima W.J.de Wilde & Duyfjes. In Stemonaceae a new species, Stemona hirtella W.J.de Wilde & Duyfjes, is described.


1970 ◽  
Vol 18 (2) ◽  
pp. 149-152
Author(s):  
Hai Yan Bi ◽  
Zhi Rong Yang ◽  
Qi Lin

In this study, one new species and one new variety are described and illustrated. Elatostema intanondense Q. Lin (Urticaceae), collected from Doi Intanond of Chiang Mai in Thailand, is morphologically similar to E. subincisum Weddell, but differs by having obscure stipules (vs. conspicuous, linear-lanceolate, 5-6 mm long in E. subincisum), and elliptic to lanceolate nanophylls, 3-7 × 1.5-3.0 mm (vs. absent in E. subincisum). Elatostema ranongense Yahara var. glabroum Q. Lin, a new variety collected from Khasi Hills in Mawhplong of Meghalaya, India. This new variety has glabrous stems and glabrous leaves that differs from var. ranongense that having densely hirtellous stems, densely strigillose leaf blade on abaxial surface along veins.Keywords: Elatostema; E. intanondense; E. ranongense var. glabroum; Urticaceae.DOI: http://dx.doi.org/10.3329/bjpt.v18i2.9300Bangladesh J. Plant Taxon. 18(2): 149-152, 2011 (December)


2017 ◽  
Vol 22 (3) ◽  
pp. 341
Author(s):  
Mercia Elias Duarte ◽  
Edmilson Santos Silva ◽  
Denise Navia

Eight new taxa of Eriophyidae mites associated with native trees in the Cupania genus—C. oblongifolia Mart. and C. impressinervia Acev (Sapindaceae)—from the Atlantic Forest in Brazil, are described and illustrated. They include two new genera and two new species of Nothopodinae, Colopodacini (Setibia domatiagena   gen. nov., sp. nov. and Aricolopodos alagoensis gen. nov., sp. nov.), one new genus and two new species of Cecidophyinae, Colomerini (Euryslobos keronidos gen. nov., sp. nov. and Gammaphytoptus cupanius sp. nov.), and one new species of Phyllocoptinae, Tegonotini (Shevtchenkella caboata sp. nov.).


2017 ◽  
Vol 74 (2) ◽  
pp. 229-243 ◽  
Author(s):  
D. J. Middleton ◽  
C. Puglisi ◽  
S. Suddee
Keyword(s):  
New Taxa ◽  

The new species Ornithoboea grandiflora D.J. Middleton and new variety Ornithoboea maxwellii var. minutiflora D.J. Middleton are described.


Phytotaxa ◽  
2017 ◽  
Vol 303 (1) ◽  
pp. 84
Author(s):  
NGỌC-SÂM LÝ ◽  
HANS-JUERGEN TILLICH

The genus Aspidistra Ker Gawler (1822: 628) is represented in tropical and subtropical SE Asia by more than 160 species. It has the highest diversity in southern China and northern Vietnam (Tillich 2005, 2014, Tillich & Averyanov 2012, Vislobokov et al. 2013). In Vietnam, more than 50 species are known: many species have been discovered from the limestone regions in North Vietnam, while about 21 species are found from sandstone forests in Central and South Vietnam (Gagnepain 1934, Bogner & Arnautov 2004, Bräuchler & Ngoc 2005, Averyanov & Tillich 2012, 2013, 2016a, 2016b, Averyanov et al. 2016, Tillich 2005, 2014, Tillich & Averyanov 2008, Tillich et al. 2007, Leong-Škorničková et al. 2014, Vislobokov 2015, Vislobokov et al. 2013, 2014b, 2014c, 2016a, 2016b, Lý & Tillich 2016). During extensive floristic surveys in Central Vietnam in 2016, several interesting specimens of Aspidistra were collected by the first author. The critical examination of these specimens and study of literature for Aspidistra in Vietnam and neighbouring countries allowed to evidence several new taxa, two of which have been recently described: A. averyanovii Lý & Tillich (2016: 54) and A. parviflora Lý & Tillich (2016: 56). In the present paper, we describe a further new species from Cà Đam mountains, Quảng Ngãi Province, namely Aspidistra cadamensis.


2020 ◽  
Vol 25 (7) ◽  
pp. 1215-1246
Author(s):  
Mércia Elias Duarte ◽  
Renata Santos De Mendonça ◽  
Denise Navia

The results of a survey of Eriophyoidea mites on wild and cultivated Solanaceae plants in Central Brazil are presented. Five new taxa associated with plants in the genus Solanum are described and illustrated. They include one new genus with type species belonging to Phyllocoptinae, Calacarini - Viginticus lupusmalum gen. nov. & sp. nov.; two new species in the Eriophyinae, Aceriini - Aceria solani sp. nov. and Paraphytoptus tuberacutus sp. nov., all of them associated with Solanum lycocarpum St. Hil.; and one new species in the Phyllocoptinae, Athocoptini - Aculus michereffi sp. nov., associated with Solanum acanthodes Hook.. New host plants for the tomato russet mite, Aculops lycopersici (Tryon 1917), are reported. In addition, the first record of Calacarus speciosissimum Flechtmann, 1999 for Brazil and from Capsicum as host plants, and the first record of Rhynacus lippius Duarte, Chetverikov & Navia, 2016, on solanaceous plants are presented; supplementary descriptions of these species were elaborated. Diagnostic traits for Calacarus mites collected on Solanaceae plants around the world are summarized.


2001 ◽  
Vol 58 (1) ◽  
pp. 57-98 ◽  
Author(s):  
R. R. MILL

Problems of infrageneric classification in Pedicularis L. (Scrophulariaceae), and the phytogeography of the genus in the Flora of Bhutan area, are discussed. Six new species and one new variety of Pedicularis L. are described. Pedicularis garckeana Prain ex Maxim. is separated from P. ser. Robustae Prain as the new, monospecific series Garckeanae R. R. Mill (Sikkim and adjacent Xizang). Six of these new taxa are endemic to Bhutan (P. dhurensis R. R. Mill sp. nov., P. longipedicellata P. C. Tsoong var. lanocalyx R. R. Mill var. nov., P. melalimne R. R. Mill sp. nov., P. microloba R. R. Mill sp. nov., P. sanguilimbata R. R. Mill sp. nov. and P. woodii R. R. Mill sp. nov.) and one (P. yarilaica R. R. Mill sp. nov.) occurs in N Bhutan and S Xizang. The type material of Phtheirospermum auratum Bonati (=Pedicularis aurata (Bonati) H. L. Li) is shown to be a mixed gathering; the name is lectotypified and an emended description of P. aurata given. Several other names are lectotypified. Three sectional names originally proposed by Yamazaki (each ‘based’ on invalid ‘names’ of groups earlier recognized as subgreges by Tsoong) are validated as P. sect. Asthenocaulus [P. C. Tsoong ex] R. R. Mill, P. sect. Nothosigmantha T. Yamaz. ex R. R. Mill, and P. sect. Rhizophyllastrum T. Yamaz. ex R. R. Mill, while a fourth invalid section (‘P. sect. Brachystachys (P. C. Tsoong) T. Yamaz.’) is here recognized and described as P. sect. Brevispica R. R. Mill, sect. nov. Pedicularis sect. Cryptorhynchus T. Yamaz. and P. sect. Elephanticeps T. Yamaz. are provided with emended descriptions. The nomenclature of P. pennelliana P. C. Tsoong and related taxa of the P. gracilis Wall. ex Benth. complex is discussed.


Phytotaxa ◽  
2013 ◽  
Vol 88 (2) ◽  
pp. 19 ◽  
Author(s):  
SVEN BUERKI ◽  
CHRISTOPHER DAVIDSON ◽  
JOAN T. PEREIRA ◽  
MARTIN W. CALLMANDER

A new species of Trigonachras from Borneo is described and illustrated. Trigonachras postardanjeisin is endemic to the ultramafic soils of the Tawai Forest Reserve in Sabah, Malaysia (Borneo). It is morphologically close to the widespread Trigonachras acuta but differs by its glabrous inflorescence and infrutescence axes and fruits. The two species also differ by their ecology and distribution. Line drawings are provided for the new taxa, along with discussions of its morphological affinities and preliminary risk of extinction assessment.


Phytotaxa ◽  
2018 ◽  
Vol 340 (3) ◽  
pp. 293 ◽  
Author(s):  
QIANG LIU ◽  
JIANG-YUN GAO

Gastrochilus dulongjiangensis, a new species from Gaoligongshan National Natural Reserve, Yunnan, China, is described here. It is morphologically similar to G. pseudodistichus and G. fuscopunctatus, but can be distinguished from them by having the orbicular epichile, hypochile as wide as epichile and fusiform pollinia. A preliminary risk-of-extinction assessment shows that the new species should be regarded as Data Deficient (DD) according to the IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2018 ◽  
Vol 349 (3) ◽  
pp. 201 ◽  
Author(s):  
ULRICH MEVE ◽  
GILDAS GÂTEBLÉ ◽  
SIGRID LIEDE-SCHUMANN

Two New Caledonian endemics of Apocynaceae-Asclepiadoideae, predominantly natives of the Ile des Pins, an island south of New Caledonia known for its high microendemism, are here described as new to science. One new species, Heterostemma bicanthaceum (Ceropegieae), is related to H. acuminatum Decne. but differs remarkably in a number of floral characters such as a raised central corolla tube, and a dull purple-brown and wrinkled corona with expanded lateral appendages forming coronal rail-like structures. The other species described and illustrated, Marsdenia kuniensis (Marsdenieae), is sister to Marsdenia dognyensis from the Grande Terre. Its fleshy whitish to rose corolla with the tube closely encircling the corona as well as protruding and deltoid corona lobes broader than long distinguish the new species. These two species are restricted to calcareous forests and a preliminary IUCN red list assessment is proposed. Additionally, the name Marsdenia neomicrostoma is proposed for a species whose members have hitherto mostly been listed under the name Marsdenia microstoma, a name that has to be considered as nomen dubium after its type has been lost. The species is a typical element of ultramafic soil vegetation, and therefore widespread on Grande Terre but missing on the Ile des Pins.


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