Latest Articles from PhytoKeys Latest 9 Articles from PhytoKeys https://phytokeys.pensoft.net/ Fri, 29 Mar 2024 12:38:05 +0200 Pensoft FeedCreator https://phytokeys.pensoft.net/i/logo.jpg Latest Articles from PhytoKeys https://phytokeys.pensoft.net/ Cyphostemma calcarium, a new species of Vitaceae from the Ankarana Special Reserve, Madagascar https://phytokeys.pensoft.net/article/69194/ PhytoKeys 180: 73-80

DOI: 10.3897/phytokeys.180.69194

Authors: Romer Narindra Rabarijaona, Valisoa Louisicaël Rafaralahy, Charles Rakotovao, Rindra Manasoa Ranaivoson, Bing Liu, Zhi-Duan Chen, Jun Wen, Li-Min Lu

Abstract: Cyphostemma calcarium Rabarij & L.M.Lu, sp. nov., is herein described as a new species found on limestone outcrops in northern Madagascar. Its diagnostic morphological characteristics were compared to the species occurring in the Ankarana Special Reserve. We present detailed descriptions, illustrations, distribution map, and a preliminary conservation assessment of the species. An identification key to all known species of Cyphostemma from the Ankarana Special Reserve is also provided.

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Research Article Tue, 3 Aug 2021 16:32:26 +0300
Hydrostachys flabellifera (Hydrostachyaceae), a new species from Madagascar https://phytokeys.pensoft.net/article/58538/ PhytoKeys 167: 45-56

DOI: 10.3897/phytokeys.167.58538

Authors: Zhun Xu, Jing Tian, Solo Hery Jean Victor Rapanarivo, Rokiman Letsara, Rivontsoa A. Rakotonasolo, Guy E. Onjalalaina, Guang-Wan Hu, Qing-Feng Wang

Abstract: Hydrostachys flabellifera, a new species of Hydrostachyaceae found in a stream in Manandriana, Madagascar, is described and illustrated herein. It is similar to H. verruculosa and H. laciniata in morphology, but can be distinguished from them by its leaves with sparsely arranged, flabelliform and palmately parted emergences, obvious rachis and the pattern of segments arranged on the male bracts. Molecular phylogenetic analysis of the nuclear ribosomal internal transcribed spacer (ITS) dataset provides a robust support for it as a new species as well.

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Research Article Fri, 20 Nov 2020 12:59:57 +0200
Four new species of Acalypha L. (Euphorbiaceae, Acalyphoideae) from the West Indian Ocean Region https://phytokeys.pensoft.net/article/50229/ PhytoKeys 140: 57-73

DOI: 10.3897/phytokeys.140.50229

Authors: Iris Montero-Muñoz, Geoffrey A. Levin, José M. Cardiel

Abstract: Four new species of Acalypha (Euphorbiaceae, Acalyphoideae) from the Western Indian Ocean Region, based on morphological and molecular evidence, are described, illustrated, and mapped. Acalypha gillespieae sp. nov., A. leandrii sp. nov. and A. nusbaumeri sp. nov. are endemic to Madagascar, and A. mayottensis sp. nov. is known only from Mbouzi islet (Mayotte), in the Comoros Archipelago. We also describe for the first time in Acalypha the presence of membranous or chartaceous perules covering the axillary buds. Preliminary conservation assessments of the new species are also provided.

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Research Article Mon, 24 Feb 2020 13:45:41 +0200
Nomenclatural review of Acalypha (Euphorbiaceae) of the Western Indian Ocean Region (Madagascar, the Comoros Archipelago, the Mascarene Islands and the Seychelles Archipelago) https://phytokeys.pensoft.net/article/27284/ PhytoKeys 108: 85-116

DOI: 10.3897/phytokeys.108.27284

Authors: Iris Montero Muñoz, José María Cardiel, Geoffrey A. Levin

Abstract: This work presents a critical nomenclatural review of the Acalypha species of the Western Indian Ocean Region (Madagascar, the Comoros Archipelago, the Mascarene Islands and the Seychelles Archipelago). This is the first treatment of Acalypha of Madagascar since Leandri’s monograph in 1942. A total of 151 scientific names related to Acalypha from this region are treated. We recognise 35 species (28 native and seven introduced), treat 93 names as synonyms (28 of them for the first time) and identify three as doubtful or excluded names. We designate lectotypes for 41 names, make two new combinations and propose one new name.

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Research Article Mon, 10 Sep 2018 11:54:23 +0300
Studies of Malagasy Eugenia – IV: Seventeen new endemic species, a new combination, and three lectotypifications; with comments on distribution, ecological and evolutionary patterns https://phytokeys.pensoft.net/article/5203/ PhytoKeys 49: 59-121

DOI: 10.3897/phytokeys.49.9003

Authors: Neil Snow, Martin Callmander, Peter B. Phillipson

Abstract: Seventeen new endemic species of the genus Eugenia L. (Myrtaceae) are proposed from Madagascar, including: E.andapae N. Snow, E.barriei N. Snow, E.bemangidiensis N. Snow, E.calciscopulorum N. Snow, E.delicatissima N. Snow, Callm. & Phillipson, E.echinulata N. Snow, E.gandhii N. Snow, E.hazonjia N. Snow, E.iantarensis N. Snow, E.malcomberi N. Snow, E.manomboensis N. Snow, E.obovatifolia N. Snow, E.ranomafana N. Snow & D. Turk, E.ravelonarivoi N. Snow & Callm., E.razakamalalae N. Snow & Callm., E.tiampoka N. Snow & Callm., and E.wilsoniana N. Snow, and one new combination, Eugeniarichardii (Blume) N. Snow, Callm. & Phillipson is provided. Detailed descriptions, information on distribution and ecology, distribution maps, vernacular names (where known), digital images of types, comparisons to morphologically similar species. Preliminary assessment of IUCN risk of extinction and conservation recommendations are provided, including Vulnerable (4 species), Endangered (2 species), and Critically Endangered (4 species). Lectotpyes are designated for Eugeniahovarum H. Perrier, Eugenianompa H. Perrier, and E.scottii H. Perrier respectively.

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Research Article Tue, 28 Apr 2015 00:00:00 +0300
Syzygium pyneei (Myrtaceae), a new critically endangered endemic species from Mauritius https://phytokeys.pensoft.net/article/4679/ PhytoKeys 46: 61-66

DOI: 10.3897/phytokeys.46.9039

Authors: James W. Byng, F. B. Vincent Florens, Claudia Baider

Abstract: A new species of Syzygium Gaertn. (Myrtaceae), S. pyneei Byng, V. Florens & Baider, is described from Mondrain Reserve on the island of Mauritius. This species is endemic to the island and differs from any other species by its combination of cauliflory, relatively large flowers, light green to cream hypanthium, light pink stamens, short thick petioles, coriaceous leaves and round, cuneate or sub-cordate to cordate leaf bases. Syzygium pyneei Byng, V. Florens & Baider is known from only two individuals from the type locality and merits the conservation status of Critically Endangered (CR C2a(i,ii); D).

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Research Article Thu, 5 Feb 2015 00:00:00 +0200
Chapelieria magna, a new species of Rubiaceae from eastern Madagascar https://phytokeys.pensoft.net/article/4514/ PhytoKeys 44: 89-95

DOI: 10.3897/phytokeys.44.8513

Authors: Kent Kainulainen, Sylvain G. Razafimandimbison

Abstract: A new species of Chapelieria was discovered during a recent field trip to the Masoala National Park in eastern Madagascar, and is described here as Chapelieria magna Kainul., sp. nov. This species is readily distinguishable from previously described species of the genus by its quadrangular shoots, triangular-calyptrate stipules, sessile leaves, pubescent styles, and ridged fruits. It also differs in the larger number of ovules and the much larger size of leaves and fruits.

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Research Article Thu, 15 Jan 2015 00:00:00 +0200
Two new combinations in the genus Distephanus Cass. (Asteraceae, Vernonieae) https://phytokeys.pensoft.net/article/1440/ PhytoKeys 17: 25-26

DOI: 10.3897/phytokeys.17.4013

Authors: Harold Robinson

Abstract: New combinations are provided in Distephanus for two species from Madagascar.

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Short Communication Fri, 21 Sep 2012 00:00:00 +0300
Nesogordonia tricarpellata (Dombeyaceae), a new species from Madagascar that compels modification of the morphological circumscription of the genus https://phytokeys.pensoft.net/article/1362/ PhytoKeys 2: 9-15

DOI: 10.3897/phytokeys.2.747

Authors: Cynthia Skema, Laurence J. Dorr

Abstract: Nesogordonia tricarpellata Skema & Dorr, sp. nov., a new species from southeastern Madagascar, is described and illustrated. It differs from all other species of Nesogordonia Baill. in6–9 stamens, 3 staminodes, a 3-carpellate ovary, and a 3-valved capsule. These androecial and gynoecial characters require modification of the long-standing circumscription of the genus. This new species also has the southernmost geographic range of any species in the genus.

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Research Article Fri, 11 Feb 2011 00:00:00 +0200