Latest Articles from PhytoKeys Latest 13 Articles from PhytoKeys https://phytokeys.pensoft.net/ Thu, 28 Mar 2024 22:44:29 +0200 Pensoft FeedCreator https://phytokeys.pensoft.net/i/logo.jpg Latest Articles from PhytoKeys https://phytokeys.pensoft.net/ Neotypification for five names linked to Arenaria (Caryophyllaceae) for the endemic flora of Peru and Bolivia https://phytokeys.pensoft.net/article/107263/ PhytoKeys 230: 131-144

DOI: 10.3897/phytokeys.230.107263

Authors: Daniel B. Montesinos-Tubée, Duilio Iamonico

Abstract: The names Arenaria mattfeldii, A. pallens, A. peruviana, A. pintaudii, and A. stuebelii (Caryophyllaceae, Arenarieae) from Peru and Bolivia were studied and neotypified based on specimens preserved at B and P.

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Research Article Mon, 7 Aug 2023 16:05:46 +0300
Boliviadendron, a new segregate genus of mimosoid legume (Leguminosae, Caesalpinioideae, mimosoid clade) narrowly endemic to the interior Andean valleys of Bolivia https://phytokeys.pensoft.net/article/82256/ PhytoKeys 205: 439-452

DOI: 10.3897/phytokeys.205.82256

Authors: Élvia Rodrigues de Souza, Priscilla Gomes C. de Almeida, Lamarck Rocha, Erik J.M. Koenen, Margoth Atahuachi Burgos, Gwilym P. Lewis, Colin E. Hughes

Abstract: Phylogenetic analyses of DNA sequence data sampling all species of Leucochloron alongside representatives of genera of the Inga and Albizia clades of the larger ingoid clade of mimosoid legumes (sensu Koenen et al. 2020) confirm the non-monophyly of the genus Leucochloron. We show that Leucochloron bolivianum is placed in the Albizia clade, while the remaining four species of Leucochloron are placed in the Inga clade, in line with previous results. To rectify this non-monophyly, L. bolivianum is segregated as the new genus, Boliviadendron, with a single species, Boliviadendron bolivianum, narrowly endemic to the interior Andean valleys of Bolivia. We illustrate this new segregate genus, present a map of its distribution and discuss the striking lack of morphological distinctions between Boliviadendron and Leucochloron, as well as the phylogenetic and morphological affinities of Boliviadendron to the genera Enterolobium and Albizia.

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Research Article Mon, 22 Aug 2022 19:00:16 +0300
Taxonomic revision of the peculiar genus Xylopodia (Loasaceae) with a new species from Argentina and Bolivia demonstrating an atypical trans-Andean disjunction https://phytokeys.pensoft.net/article/77827/ PhytoKeys 194: 47-62

DOI: 10.3897/phytokeys.194.77827

Authors: Claudia M. Martín, Christian A. Zanotti, Rafael Acuña-Castillo, Tilo Henning, Juan C. Catari, Maximilian Weigend

Abstract: Loasaceae subfam. Loasoideae are a nearly exclusively American plant group with a center of diversity in Peru. Numerous new taxa have been described over the past decades; one of the most striking discoveries was that of the narrowly endemic Xylopodia with the single species Xylopodia klaprothioides in Peru, Dpto. Cajamarca in 1997. Surprisingly, field studies in the past years have resulted in the discovery of material clearly belonging to the same genus in both Bolivia and northern Argentina, approximately 1500 km SE of the next known population of Xylopodia in Contumazá, Peru. A closer examination shows that Argentinian and Bolivian material belongs to a single species, clearly different from Xylopodia klaprothioides. We here describe Xylopodia laurensis and the entire genus is revised. Both species are illustrated, all aspects of their biology and ecology are portrayed and their threat status is discussed.

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Research Article Fri, 15 Apr 2022 12:13:41 +0300
Living in extreme environments: distribution of Lycium humile (Solanaceae), an endemic halophyte from the Altiplano-Puna region, South America https://phytokeys.pensoft.net/article/71377/ PhytoKeys 185: 1-15

DOI: 10.3897/phytokeys.185.71377

Authors: María Virginia Palchetti, Juan José Cantero, Vanezza Morales-Fierro, Gloria E. Barboza, Andrés Moreira-Muñoz

Abstract: Very few Solanaceae species are able to grow in saline soils; one of them is Lycium humile. This species is endemic to the Altiplano-Puna region (Central Andes, South America) where there are multiple extreme environmental conditions such as hypersaline soils. Here we present an updated description and distribution of L. humile including its new record for Bolivia at the edges of “Salar de Uyuni”, the largest salt flat in the world; we discuss its ecological role in saline environments by analyzing soil salinity and cover-abundance values ​​of the studied sites. According to IUCN criteria, we recommend a category of Least Concern for L. humile, but the growing development of lithium mining in saline environments of the Altiplano-Puna region may potentially threaten exclusive communities.

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Research Article Mon, 8 Nov 2021 09:19:38 +0200
New combinations and synonyms in discoid caespitose Andean Senecio (Senecioneae, Compositae) https://phytokeys.pensoft.net/article/38534/ PhytoKeys 132: 111-130

DOI: 10.3897/phytokeys.132.38534

Authors: Joel Calvo, Arturo Granda, Vicki A. Funk

Abstract: The names Werneria melanandra and W. pygmophylla are transferred to the genus Senecio. They belong to the group of the discoid caespitose Andean Senecio, specifically to the subgroup with blackish anthers and style branches and whitish corollas. The recognition of S. digitatus as a distinct species is also discussed. Within the framework of the mentioned group, the names S. casapaltensis and S. macrorrhizus are lectotypified, S. humillimus var. melanolepis is neotypified, an epitype is designated for the name W. melanandra, and nine new synonyms are proposed. An updated comprehensive dichotomous key including all discoid caespitose Senecio species from Bolivia and Peru is provided.

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Research Article Thu, 3 Oct 2019 09:40:15 +0300
A new combination and taxonomic notes in Pseudobombax Dugand (Malvaceae) https://phytokeys.pensoft.net/article/13930/ PhytoKeys 85: 27-30

DOI: 10.3897/phytokeys.85.13930

Authors: Jefferson G. Carvalho-Sobrinho, Laurence J. Dorr

Abstract: Taxonomic notes in the Neotropical genus Pseudobombax (Malvaceae) are presented. One new combination and two new heterotypic synonyms for taxa originally described from Brazil and Ecuador are proposed based on both morphological and previously published molecular evidence. The taxonomic changes will be adopted in a treatment of Pseudobombax for the upcoming Brazilian Flora 2020 and in a forthcoming revision of the genus throughout its range.

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Short Communication Wed, 9 Aug 2017 12:31:47 +0300
Taxonomic revision of Neotropical Murdannia Royle (Commelinaceae) https://phytokeys.pensoft.net/article/9835/ PhytoKeys 74: 35-78

DOI: 10.3897/phytokeys.74.9835

Authors: Marco Octávio de Oliveira Pellegrini, Robert B. Faden, Rafael Felipe de Almeida

Abstract: This study provides a taxonomic revision for the Neotropical species of the genus Murdannia. Six species are recognized as native, including a new species and a new combination, while two Asian species are recognized as invasive. We present an identification key, a table summarizing the morphologic differences among the species, a new synonym, six lectotypifications, a distribution map, and descriptions, comments and photographic plates for each species. We also provide comments on the morphology of the Neotropical species of Murdannia, comparing them with the Paleotropical species, and a discussion of inflorescence architecture in the genus as a whole.

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Research Article Tue, 8 Nov 2016 11:59:29 +0200
Two new species of Siphocampylus (Campanulaceae, Lobelioideae) from the Central Andes https://phytokeys.pensoft.net/article/6973/ PhytoKeys 58: 105-117

DOI: 10.3897/phytokeys.58.6973

Authors: Laura Lagomarsino, Daniel Santamaría-Aguilar

Abstract: Two species of Siphocampylus (Campanulaceae: Lobelioideae) from the Central Andes of Peru and Bolivia are described, illustrated, and discussed with reference to related species. One species, Siphocampylus antonellii, is endemic to high elevation grasslands of Calca, Peru, while the second, S. siberiensis, is endemic to cloud forests of Cochabamba, Bolivia. Both species are robust shrubs that produce tubular pink flowers that are likely pollinated by hummingbirds.

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Research Article Tue, 12 Jan 2016 11:58:29 +0200
Problematic specimens turn out to be two undescribed species of Bignonia (Bignoniaceae) https://phytokeys.pensoft.net/article/5423/ PhytoKeys 56: 7-18

DOI: 10.3897/phytokeys.56.5423

Authors: Alexandre R. Zuntini, Charlotte M. Taylor, Lúcia G. Lohmann

Abstract: Bignonia comprises 29 species of lianas characterized by eight phloem wedges, leaves usually 2-foliolate, mostly simple tendrils and opaque seed wings. The analysis of herbarium specimens in preparation for a taxonomic revision of the genus led to the recognition of two new species: (i) Bignonia cararensis from Costa Rica, characterized by a thyrse with lateral compound dichasia and lack of interpetiolar ridge, and (ii) Bignonia sanctae-crucis from Bolivia and Brazil, distinguishable by its membranous leaflets, membranous calyx and small fruits. We provide detailed descriptions, illustrations, distribution maps, initial conservation status assessments, and comparisons of the newly described taxa with closely related species.

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Research Article Thu, 3 Sep 2015 10:03:29 +0300
A new species of Cissampelos (Menispermaceae) from Bolivia and Paraguay https://phytokeys.pensoft.net/article/1529/ PhytoKeys 38: 89-99

DOI: 10.3897/phytokeys.38.6504

Authors: Rosa Ortiz, Michael Nee

Abstract: The new species Cissampelos arenicola M. Nee & R. Ortiz, from the Bolivian and Paraguayan Chaco is described, its affinities are discussed, and its preliminary conservation status is evaluated. The species is at present known from 13 collections from sand dunes or dry forests. Cissampelos arenicola is distinguished from all other American species in the genus by its ovate- to subreniform-trilobed leaves, 8-locular synandria, and relatively large, and scarcely ornamented endocarps. The most common perianth condition in the pistillate flowers of Cissampelos is one sepal and one antesepalous petal, and while these may vary in number, they are always found adaxial to the carpel, and although the southern African taxon called Cissampelos capensis, whose generic position is uncertain, superficially resembles Cissampelos arenicola, its sepals and petals are consistently lateral to the carpel and not adaxial.

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Research Article Wed, 4 Jun 2014 00:00:00 +0300
Reinterpretation of the nomenclatural type of Pseudobombax heteromorphum (Malvaceae, Bombacoideae) reveals an overlooked new species from Bolivia https://phytokeys.pensoft.net/article/1459/ PhytoKeys 21: 53-61

DOI: 10.3897/phytokeys.21.5213

Authors: Jefferson de Carvalho-Sobrinho, Luciano de Queiroz, Bil Alverson

Abstract: In the course of a taxonomic revision of Pseudobombax Dugand, one of us (JGCS) frequently has observed herbarium specimens of Bombacoideae that comprise a mixture of different Angiosperm families. In particular, P. heteromorphum (Kuntze) A.Robyns, a frequent name in checklists of the Bolivian flora, is based on type material of Bombax heteromorphum Kuntze that is clearly a mixture of Pseudobombax flowers and Tabebuia Gomes ex DC. (Bignoniaceae) leaves. We herein designate as the lectotype of B. heteromorphum the flowers of an herbarium sheet deposited in NY and as epitype a complete specimen (leaves, flowers, and fruit) in HUEFS. We consider Bombax heteromorphum to be a synonym of P. longiflorum (Mart.) A. Robyns, a species widespread in Neotropical seasonally dry forest of Bolivia, Brazil, Paraguay, and Peru. Furthermore, we describe a new species, P. pulchellum Carv.-Sobr., apparently endemic to seasonally dry tropical forest (SDTF) in Bolivia (Chiquitano dry forest), based on specimens commonly but incorrectly identified as P. heteromorphum. We also comment on the morphology, distribution, and conservation status of this new species.

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Research Article Thu, 9 May 2013 00:00:00 +0300
Description and molecular diagnosis of a new species of Brunfelsia (Solanaceae) from the Bolivian and Argentinean Andes https://phytokeys.pensoft.net/article/1408/ PhytoKeys 10: 83-94

DOI: 10.3897/phytokeys.10.2558

Authors: Natalia Filipowicz, Michael Nee, Susanne Renner

Abstract: Brunfelsia plowmaniana N.Filipowicz & M.Nee sp. nov., a species from humid and cloud forests of the Bolivian and Argentinean Andes, is described and provided with a molecular diagnosis, using provisions available in the recently approved International Code of Nomenclature for algae, fungi and plants. Specimens belonging to the new species were previously placed in the polymorphic B. uniflora (Pohl) D.Don, which a molecular phylogeny revealed as polyphyletic. Revision of numerous collections revealed clear morphological differences between the new species and B. uniflora, the type locality of which is in the state of São Paulo, Brazil.

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Research Article Thu, 22 Mar 2012 00:00:00 +0200
A new name and a new synonym in Miconia (Melastomataceae) https://phytokeys.pensoft.net/article/1365/ PhytoKeys 3: 35-37

DOI: 10.3897/phytokeys.3.1174

Authors: Renato Goldenberg, Susanne Renner

Abstract: The name Miconia densiflora Cogniaux is a later homonym of M. densiflora (Gardner) Naudin, but since we propose it as a taxonomic synoym of M. caudata (Bonpl.) DC., we do not provide a new name. The name Miconia longicuspis Herzog is a later homonym of M. longicuspis Cogn. and we here propose its replacement by M. longicuspidata Renner & R.Goldenb.

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Research Article Mon, 30 May 2011 00:00:00 +0300