Ruehssia sumiderensis (Apocynaceae), a new species from Chiapas state, Mexico

Phytotaxa ◽  
2020 ◽  
Vol 440 (1) ◽  
pp. 69-80
Author(s):  
LUCIO LOZADA-PÉREZ ◽  
NEPTALÍ RAMÍREZ-MARCIAL ◽  
SAR ADRIÁN GONZÁLEZ-MARTÍNEZ

It is herein presented Ruehssia sumiderensis as a new species known only in the Cañón del Sumidero National Park, in Chiapas, Mexico. It is illustrated with a line drawing, live images and SEM photographs of the gynostegium and pollinarium. Morphological and molecular evidence with plastid data (trnL intron and trnL-F intergenic spacer) confirms its position in Ruehssia, a recently proposed genus that includes American Marsdenieae species. It is similar to Marsdenia laxiflora and M. pinetorum due to the basally rounded or truncate leaves, rotate corolla without callous cushions in the sinuses. Two new combinations are also made in Ruehssia, for M. laxiflora and M. pinetorum.

Zootaxa ◽  
2021 ◽  
Vol 4933 (4) ◽  
pp. 527-542
Author(s):  
PETER DEGMA ◽  
HARRY A. MEYER ◽  
JULIANA G. HINTON

A new Tardigrada species, Claxtonia goni sp. nov. is described from specimens collected in the central area of the Haleakalā National Park, the island of Maui, Hawaii, U.S.A. The new species and Clx. pardalis (Degma & Schill, 2015) together with several examples of Clx. wendti (Richters, 1903) are the only known Claxtonia species with the plates having an intracuticular pattern resembling that on a leopard’s fur. Claxtonia goni sp. nov. differs from Clx. pardalis in the absence of pores on leg plates, in smaller and uniform pores on dorso-lateral plates, in very unequally spaced teeth in the dentate collar, in lesser ratio of internal cephalic cirrus and lateral cirrus A lengths, and in relatively shorter claws in fourth pair of legs. The differences between the new species and the other congeners as well as Echiniscus species with the same cirri composition and similar cuticular sculpture are also defined. The diagnosis of the genus Claxtonia is amended and three Echiniscus species are transferred into the genus with the proposed new combinations: Claxtonia aliquantilla (Grigarick, Schuster & Nelson, 1983) comb. nov., Clx. mosaica (Grigarick, Schuster & Nelson, 1983) comb. nov. and Clx. nigripustula (Horning, Schuster & Grigarick, 1978) comb. nov.. 


Phytotaxa ◽  
2016 ◽  
Vol 275 (3) ◽  
pp. 263
Author(s):  
ALFONSO DOUCETTE ◽  
JOEL TIMYAN ◽  
INGRID HENRYS ◽  
KENNETH M. CAMERON

A new species of Specklinia with a repent growth habit and minute purple flowers is described and illustrated. The new species is distinguished from Specklinia wrightii based on its morphological and molecular distinctness from that species. The phylogenetic placement of the new species is provided based on an nrITS tree. The species described here represents the first new orchid to be described from material originating from the Parc National Naturel Macaya in six years. New combinations are made in Acianthera for species of Kraenzlinella and Pleurothallis subgen. Antilla embedded within the genus. In particular Kraenzlinella rinkei is provided as a new synonym for Specklinia montezumae and Specklinia simpliciflora is transferred to Acianthera sect. Antilla based on morphology and geographic distribution.


Phytotaxa ◽  
2018 ◽  
Vol 357 (2) ◽  
pp. 107 ◽  
Author(s):  
C. THOMAS PHILBRICK ◽  
BRAD R. RUHFEL ◽  
CLAUDIA P. BOVE

We conducted a phylogenetic study of neotropical subfamily Podostemoideae with a focus on Rhyncholacis and the monotypic Macarenia using molecular data (plastid: rbcL, trnL intron; nuclear: ITS). Our results placed the five included species of Rhyncholacis, one of which is newly described herein, in a moderately well supported (73 BP) clade with M. clavigera. These results support the transfer of M. clavigera to Rhyncholacis (R. clavigera); the nomenclatural changes are made. In addition, a new species of Rhyncholacis (R. paulana C.T. Philbrick & C.P. Bove) is illustrated and described. Rhyncholacis paulana is distinguished from all other species in the genus by its simple pinnately lobed leaf, which is fleshy and undulate. All other species of Rhyncholacis have leaves that are pinnately lobed, the lobes of which are repeatedly divided, or pinnately compound and characterized by finely dissected pinnate segments.


Mycotaxon ◽  
2020 ◽  
Vol 135 (1) ◽  
pp. 97-102
Author(s):  
José Luiz Bezerra ◽  
Maruzanete Pereira Melo ◽  
José Evando Aguiar Beserra Jr ◽  
Elliot Watanabe Kitajima ◽  
Samara Raquel Sousa ◽  
...  

A new species, Caliciopsis sambaibae, is described associated with Davilla elliptica plants. The collections were made in the Cerrado of Sete Cidades National Park, in the municipality of Piracuruca, Piauí State, Brazil.


Phytotaxa ◽  
2016 ◽  
Vol 257 (2) ◽  
pp. 174 ◽  
Author(s):  
Nállarett Dávila ◽  
Alberto Vicentini

Isertia psammophila, a new species from the white-sand campinarana forests in Northern Brazilian Amazonia is here described and illustrated. While molecular evidence indicates that it is closely related to I. rosea, I. parviflora and I. spiciformis, morphologically it is most similar to I. rosea by its short stipules and glabrescent leaves. Isertia psammophila occurs in sympatry with I. rosea and I. parviflora in the Viruá National Park, Roraima, Brazil, and these three species can be easily differentiated by morphological characters, which are here discussed.


Phytotaxa ◽  
2015 ◽  
Vol 222 (1) ◽  
pp. 33 ◽  
Author(s):  
Dai-Gui Zhang ◽  
Tao Deng ◽  
Changkyun King ◽  
Jianwen Zhang ◽  
Zelong Nie ◽  
...  

A distinctive, previously undescribed species of Epimedium (Berberidaceae), which we propose naming E. tianmenshanensis, was found during a floristic survey in Hunan, China. It is similar to E. baojingense and E. franchetii, but has smaller flowers and petals with a short, blunt spur. We determined the phylogenetic position of the new species using DNA sequences of nuclear ITS and two chloroplast regions (atpB-rbcL intergenic spacer and matK). Molecular evidence indicates that E. tianmenshanensis occupies a distinct group related to E. baojingense.


1991 ◽  
Vol 48 (1) ◽  
pp. 23-25 ◽  
Author(s):  
R. M. Smith

A new species of Hedychium, H. griersonianum, is described and its relationship to H. ellipticum discussed. Two new combinations are made in Stahlianthus, S. inrolucratus (King ex Baker) R. M. Smith, for which a lectotype is selected, and S. andersonii (Baker) R. M. Smith.


Zootaxa ◽  
2008 ◽  
Vol 1688 (1) ◽  
pp. 61 ◽  
Author(s):  
NANTASAK PINKAEW

A new species of Fibuloides Kuznetsov (Lepidoptera: Tortricidae: Eucosmini), Fibuloides khaonanensis Pinkaew, is described and illustrated based on male specimens collected from evergreen forest in Khao Nan National Park, Nakhon Si Thammarat Province, Thailand. Eucoenogenes bicucullus Pinkaew and Eucoenogenes vaneeae Pinkaew, described from male and female specimens collected from Thong Pha Phum National Park, Thailand, are transferred to Fibuloides (n. comb).


Author(s):  
Tanawat Chaowasku ◽  
Kithisak Aongyong ◽  
Anissara Damthongdee ◽  
Hathaichanok Jongsook ◽  
David M. Johnson

The generic status of Winitia Chaowasku (Annonaceae Juss., Miliuseae Hook.f. & Thomson) is reaffirmed by an extensive phylogenetic reconstruction using seven plastome regions (matK, ndhF, rbcL, ycf1 exons; trnL intron; psbA-trnH, trnL-trnF intergenic spacers) and including, among others, seven accessions of Winitia plus two accessions of its sister group, Stelechocarpus Hook.f. & Thomson. The results disclosed a maximally supported clade of Winitia, as well as of Stelechocarpus. The sister relationship of the two genera is still rather poorly supported and the branch uniting them is very short, whereas the branches leading to Winitia and to Stelechocarpus are relatively long, corresponding to their considerable morphological differences. Additionally, in Miliuseae there is a particular indel of eight continuous base pairs in the trnL-trnF intergenic spacer potentially diagnostic for generic discrimination, i.e., members in the same genus possess the same indel structure (absence or presence of a gap), and this indel differentiates Winitia from Stelechocarpus. Winitia cauliflora (Scheff.) Chaowasku appears polyphyletic and Winitia longipes (Craib) Chaowasku & Aongyong comb. nov. based on Stelechocarpus longipes Craib is consequently proposed. Furthermore, our phylogenetic data support a new species, Winitia thailandana Chaowasku & Aongyong sp. nov. from southern Thailand, which is described and illustrated. A key to genera in the sageraeoid clade (Sageraea-Winitia-Stelechocarpus) and a key to the four species of Winitia are provided.


Bothalia ◽  
2016 ◽  
Vol 46 (1) ◽  
Author(s):  
William R. Buck ◽  
Terry A.J. Hedderson

Background: Sematophyllum is a pantropical genus of approximately 170 species. The genus has never been revised on a global scale and is poorly known in many areas of the world. This is perhaps especially true in Africa where 60 accepted species are recorded, many seemingly endemic to the eastern and central tropical areas. Further taxonomic work will enable better understanding of the genus, its biogeography and regional patterns of plant diversity; help guide conservation efforts; and facilitate a broader understanding of the evolution of the Afrotropical flora.Objectives: The objective of this study is to describe a new species of Sematophyllum from Rwanda, part of the mega-diverse Albertine Rift system.Methods: Light microscopy was used to compare anatomical and morphological details of the putative new species with specimens of other members of the genus with which it could potentially be conspecific.Results: Sematophyllum rheophyticum W.R. Buck Hedd. was described as new and is currently known only from the type locality at Gisakura, Nyungwe National Park, Rwanda. It is distinguishable from all congeners by a unique combination of characters including the concave, abruptly acuminate leaves, the alar areolation and the rheophytic habitat.Conclusion: Sematophyllum rdicum is a new species, defined by a combination of several anatomical characters, known currently only from the type locality. Furthermore, it is one of only a few species in the genus that occurs in rheophytic habitats. Its phylogenetic relationships are obscure and will probably need to be evaluated with molecular evidence.


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