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Rafael F Almeida, Isabel R Guesdon, Marcelo R Pace, Renata M S Meira
A taxonomic revision of Mcvaughia is presented, including the description of a new species from the state of Piauí, Brazil, and notes on wood, secondary phloem, leaf, and floral morpho-anatomy. We present a key to the species, full morphological descriptions, a distribution map, and notes on distribution, ecology, etymology, and conservation status for each species.
2019: PhytoKeys
Ruth Kiew, Kah-Hoo Lau
The genus Senyumia was previously known from a single species, S.minutiflora (Ridl.) Kiew, A.Weber & B.L.Burtt, from a limestone karst, Gunung Senyum, in Pahang, Malaysia. Senyumiagranitica Kiew, here described and illustrated, is the second species of the genus. It differs from S.minutiflora , not only in its habitat, but also in its shorter leaves, larger, non-resupinate or only partially resupinate flowers and smaller seeds. It is known from a small, fragmented population from a low range of hills. Therefore, under the IUCN Red List Categories & Criteria, it is assessed as Critically Endangered...
2019: PhytoKeys
Maxime Rome, Geo Coppens d'Eeckenbrugge
Passiflorariparia was incompletely described by Masters, who cited specimens of Martius and Spruce. While Spruce 2191 , the unique syntype with an observable corona, exhibits a reduced outermost series of filaments, the accompanying iconography represents two equal outer series. Later descriptions have neither added significant information nor corrected the inconsistency in the corona description, so that four closely related species have been distinguished on the basis of traits not properly documented for P...
2019: PhytoKeys
Lei Wu, Xiong Li, Wen-Jian Liu, Quan-Ru Liu
Spiradicliskarstana , a new species of Spiradiclis (Rubiaceae) collected from Yunnan, China, is described for the first time. It is morphologically close to S.jingxiensis , but differs from the latter mainly by its inflorescences with 5-9 flowers, its 1.5-2.4 mm long peduncles, its stipules shorter than 1 mm and the 5-12 pairs of secondary veins. The conservation status is assessed as "Vulnerable" (VU) according to the IUCN Red List Categories and Criteria.
2019: PhytoKeys
Alexander P Sukhorukov, Pei-Liang Liu, Maria Kushunina
The composition of many Chenopodiaceae genera in different parts of Himalaya and Tibet has been insufficiently known or contradictory. A revision of the family in Himalaya including Bhutan, Nepal, parts of India (Himachal Pradesh, Jammu and Kashmir, Sikkim and Uttarakhand) and Tibet (Xizang, China) is presented for the first time. Altogether, 57 species from 20 genera are reported, including three species new to science ( Agriophyllumtibeticum , Salsolaaustrotibetica and Salsolahartmannii ). Atriplexcentralasiatica , Corispermumdutreuilii and Salsolamonoptera are identified as new records for India and Chenopodiumpamiricum is recorded in China for the first time...
2019: PhytoKeys
David H Lorence, Warren L Wagner
Perrottetiawichmaniorum Lorence & W. L. Wagner, sp. nov . is described as endemic to Kaua'i. It differs from its Hawaiian congener P.sandwicensis by its larger, thicker, more densely hirtellous-villosulous rugose leaves with a smaller length:width ratio [1.5-1.7:1], larger inflorescences with usually four degrees of branching with moderately to densely hirtellous axes, and flowers with glabrous petals. This new species falls into the Endangered (EN) category when evaluated using the IUCN Red List criteria for endangerment based on its small area of occupancy, a decline in the extent and quality of its habitat, and number of mature individuals...
2019: PhytoKeys
Andrey Erst, Alexander Luferov, Victoria Troshkina, Dmitry Shaulo, Alexander Kuznetsov, Kunli Xiang, Wei Wang
Trolliusaustrosibiricus Erst & Luferov, sp. nov. , a new species from Russian South Siberia is described and illustrated. This new species is endemic to Western and Central Siberia. Morphologically, it is close to the East Asian species T.chinensis and T.macropetalus . However, it differs from the aforementioned species due to the morphology of the rhizomes, aerial shoots, sepals and petals. This species is also distinguished from T.asiaticus , which is widespread in Russia (Western and Eastern Siberia), Mongolia, China, north-eastern Kazakhstan and in the northeast of the European part of Russia, in having a smaller number of sepals, longer persistent styles and petals longer than sepals...
2019: PhytoKeys
Alan W Meerow, Philip A Silverstone-Sopkin, Alejandro Zuluaga-Tróchez, Jhon A Sánchez-Taborda
A new saxicolous species of Amaryllidaceae tentatively assigned to the tribe Clinantheae, Pamiantheecollis Silverst., Meerow & Sánchez-Taborda, is described from the western slope of the Cordillera Occidental in the department of Cauca, Colombia. The new species differs from the two hitherto known species of Pamianthe in its yellow flowers and in its nearly obsolete perianth tube. The near loss of the perianth tube may be correlated with a change in pollinator. The new species lacks a bulb; it produces a large number of winged seeds that are wind-dispersed...
2019: PhytoKeys
Baohuan Wu, Chaoyu Liu, Daniel Potter, Dafang Cui
Prunusveitchii was published in 1912 and was treated as a synonym of P.serrulatavar.pubescens. The information about this taxon is relatively scarce. When consulting specimens of Prunus L., type materials of Prunusveitchii were found to belong to three taxa and P.veitchii , P.concinna , P.japonicavar.zhejiangensis, C.jingningensis and C.xueluoensis were found to be conspecific. The taxonomic status of P.veitchii is reconsidered in the present paper. Morphometric analyses were performed to evaluate the significance of differences between P...
2019: PhytoKeys
Jordan R Brock, Terezie Mandáková, Martin A Lysak, Ihsan A Al-Shehbaz
Camelinaneglecta is described as a new diploid species and its relationship to the other diploids of the genus and to the somewhat superficially similar tetraploid C.rumelica and hexaploid C.microcarpa , are discussed. SEM of seed and stem trichomes of the new species are presented.
2019: PhytoKeys
Alexander P Sukhorukov, Alexander N Sennikov, Maya V Nilova, Yuri Mazei, Maria Kushunina, Maria Salete Marchioretto, Pavel Hanáček
The basal position of the small American genus Microtea within the core Caryophyllales was suggested only recently in accordance with molecular phylogeny. However, the specific relationships within the genus were not traced. The results of our phylogenetic analysis based on the mat K chloroplast gene suggest the monophyly of Microtea , and Ancistrocarpus and other related genera should be included in it. Microtea is divided into two major sister clades: clade A consisting of M.glochidiata , M.maypurensis and M...
2019: PhytoKeys
Paul M Peterson, Isidoro Sánchez Vega, Konstantin Romaschenko, Diego Giraldo-Cañas, Nancy F Refulio Rodriguez
A taxonomic treatment, phylogeny based on analysis of six DNA sequence markers (ITS, ndhA intron, rpl32-trnL , rps3 , rps16 intron and rps16-trnK ) and classification of Muhlenbergia for Peru is given. Seventeen species and one presumed hybrid are recognised. Muhlenbergiaromaschenkoi sp. nov. is newly described from the Río Huallaga Valley, northeast of Huánuco. The type of Podosemumangustatum [≡ Muhlenbergiaangustata ] clearly aligns with what we had been referring to as the hybrid between this species and M...
2018: PhytoKeys
Van Son Dang, Ba Vuong Truong, Thi Phuong Thao Nguyen, Nghia Son Hoang
Taccakhanhhoaensis V.S. Dang & Vuong (Taccaceae) is described as a new species from Hon Ba Nature Reserve in southern Vietnam. This species is morphologically similar to T.chantrieri and T.ampliplacenta but differs from its allies by several salient characters: size of leaves and petioles, inflorescent much shorter leaves, number of flowers, stigma lobes, buds colour. A description, conservation assessment, together with photographs and a key to the species of Tacca in Vietnam are presented.
2018: PhytoKeys
Pedro Acevedo-Rodríguez, Genise Vieira Somner
Six new species are described in the large Neotropical genus Paullinia (Sapindaceae), P.cidii , P.decorticans , P.fruticosa , P.hondurensis ; P.martinellii and P.wurdackii . In addition, they are illustrated and contrasted to the morphologically most similar species currently known. The new species were discovered while working on a forthcoming revision of the genus.
2018: PhytoKeys
Brandet-Junior Lissambou, Olivier J Hardy, Christiane Atteke, Tariq Stevart, Gilles Dauby, Bertrand Mbatchi, Bonaventure Sonke, Thomas L P Couvreur
Greenwayodendron (Annonaceae) is a tropical African genus of trees occurring mainly in rain forests. Until recently, Greenwayodendron contained only two species: Greenwayodendronoliveri from West Africa and Greenwayodendronsuaveolens from Central and East Africa. Genetic data, using chloroplast haplotypes and nuclear microsatellites as well as morphometric analyses, provided important information on the delineation of species. Greenwayodendron now contains six species, including two new species ( Greenwayodendronglabrum Lissambou, Hardy & Couvreur, sp...
2018: PhytoKeys
Huiying Yu, Feiyi Guo, Yumin Shu, Zhixiang Zhang
P.brevistyla , P.delavayi and P.leptophylla . belong to Celastraceae, ParnassiaL.,Sect.NectarotrilobosDrude,Subsect.Xiphosandra (Franch.) Ku. Due to lack of material, the reliability of their taxonomic characteristics remained unknown and all three species have been retained. Following extensive field investigations, population sampling and examination of specimens, we determined that the previously used characteristics to distinguish these three species, i.e. the shape of basal leaves and the depth of staminode lobes, vary continuously within populations and should not be used to distinguish separate species...
2018: PhytoKeys
Andreas Berger
Between 1815 and 1818, Count Nikolai Romanzoff funded an expedition of the Russian brig Rurik . Besides their primary goal to discover the Northeast Passage, their aim was to collect scientific specimens, for which the botanist Adelbert von Chamisso and the entomologist Johann Friedrich von Eschscholtz were commissioned. On the Hawaiian Islands, they collected two unknown endemic species that Chamisso and Diederich Franz Leonhard von Schlechtendal later described as Coffeakaduana and C.mariniana , both now assigned to the large and complex genus Psychotria (Rubiaceae, Psychotrieae)...
2018: PhytoKeys
La-Mei Heng, Yu-Lin Zheng, Yong-Bao Zhao, Yu-Jin Wang
The existence of intermediate types is a major obstacle that can hinder the circumscription of species. Elucidating the mechanism responsible for intermediate types is essential for achieving a reasonable taxonomical treatment. In this study, we explored the evolutionary history and taxonomic treatment of the Soroserishookeriana (C.B.Clarke) Stebbins complex, which comprises six named taxa that may be taxonomically distinct and are all native to the Qingha-Tibetan Plateau (QTP). We made an investigation across the distribution range of Soroseris Stebbins and sampled 27 populations, mostly from the complex...
2018: PhytoKeys
Paúl Onzáles, Asunción Ano, Harold Robinson
A little herb from central Peru is recognised as a new species of a new genus. Centenariarupacquiana belongs to the tribe Eupatorieae, subtribe Piqueriinae. It has asymmetrical corollas with two inner lobes smaller, a flat and epaleaceous receptacle and the presence of pappus. In Peru, Centenaria is related to the genera Ferreyrella and Ellenbergia , but Ferreyrella is different by having no pappus and a paleate receptacle; and on the other hand, Ellenbergia is different by having symmetrical corollas.
2018: PhytoKeys
Gang Yao, Zhuqiu Song, Youheng Wu, Nguyen Thi Kim Thanh, Yuling Li, Shi Shi, Shixiao Luo
The names Glochidionanamiticum (Kuntze) Kuntze ex Merrill and G.annamense Beille were previously reduced to synonyms of G.eriocarpum Champ. ex Benth. However, literature examination and morphological comparison suggest that G.annamense is conspecific with G.anamiticum and the species can be readily distinguished from G.eriocarpum by its styles connate into a long cylindric column and up to 3 mm long, ovaries usually 3-locular, stigma usually 3-lobed, capsules pubescent and usually 6-grooved, persistent styles 3‒4 mm long...
2018: PhytoKeys
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