A new Critically Endangered species of stone breaker (Phyllanthus, Phyllanthaceae) from Central Brazil, with notes on its leaf and stem anatomy

Phytotaxa ◽  
2022 ◽  
Vol 530 (1) ◽  
pp. 53-64
Author(s):  
MARCOS JOSÉ DA SILVA ◽  
ALEXANDRE ANTÔNIO ALONSO ◽  
IGOR SOARES DOS SANTOS
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Systematic Position ◽  
The Other ◽  
Similar Species ◽  
Stem Anatomy ◽  
Environmental Preferences ◽  
Central Brazil ◽  
Critically Endangered Species ◽  
A New Species

A new species from the state of Goiás, Brazil, Phyllanthus pterocaulis, is described and illustrated, with comments on its geographic distribution and environmental preferences, phenology, morphological relationships, and systematic position. It is morphologically allied with Phyllanthus avicularis, P. heliotropus, and P. hyssopifolioides, but differs from all of them by a set of characters related to cymules sex, presence and types of trichomes on leaves and stems, leaf consistency, numbers of sepals in flower of both sexes, integrity of stamens, capsules and seeds. Additionally, we provide images of the new species in the field, conservation status, mapped distribution, the anatomical description of its stem and leaves, and a key to differentiate it from the other similar species belonging to Phyllanthus sect. Loxopodium occurring in Brazil. The new species is one of the few in the genus that occurs in shaded environments in seasonal dry forests within the Cerrado biome.

Synopsis of Cnidoscolus (Euphorbiaceae) in midwestern Brazil, including taxonomic updates, a new species, and a reestablishment of C. neglectus

Phytotaxa ◽  
2021 ◽  
Vol 500 (3) ◽  
pp. 179-200
Author(s):  
CELLINI CASTRO DE OLIVEIRA ◽  
ANDRÉ LAURÊNIO DE MELO ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Conservation Status ◽  
Systematic Position ◽  
The Other ◽  
Dichotomous Key ◽  
Distributional Information ◽  
A New Species

A synopsis of the genus Cnidoscolus is presented for the midwestern region of Brazil, which resulted from the analysis of about 1,200 specimens from 62 national and foreign herbaria, including type collections. Observations of populations in field were also made. Nine species are recognized, one of which, C. mcvaughii, is new to science. It is described and illustrated, and comments about its geographic distribution, morphological relationships, systematic position, phenology, and conservation status are provided, as well as images and a map. The other species are contrasted by a dichotomous key. Also, distributional information, maps, conservation evaluations, images and morphologically diagnoses are included. Eight synonymizations, one lectotypification, a neotypifcation, and the re-establishment of C. neglectus are proposed.

Manihot montana, a new species of Manihot sect. Graciles (Euphorbiaceae) from the Brazilian savannas

Phytotaxa ◽  
2019 ◽  
Vol 403 (3) ◽  
pp. 210
Author(s):  
MARCOS JOSÉ DA SILVA ◽  
ALESSANDRO OLIVEIRA DE SOUZA ◽  
ALEXANDRE ANTÔNIO ALONSO ◽  
HANS-JOACHIM ESSER
Keyword(s):  
New Species ◽  
Leaf Anatomy ◽  
Conservation Status ◽  
Systematic Position ◽  
Similar Species ◽  
Status Assessment ◽  
A New Species

Manihot montana, a new species of wild cassava, is described and illustrated based on material from the Brazilian savannas. We compared its macromorphology and leaf anatomy to M. paviifolia, the most morphologically similar species. In addition, we provide images of the new species, details on its distribution, conservation status assessment, phenology and comments on its ecology, morphological relationships and systematic position.

Paepalanthus capixaba (Eriocaulaceae), a new microendemic species from Espírito Santo, Brazil

Phytotaxa ◽  
2016 ◽  
Vol 258 (1) ◽  
pp. 83 ◽  
Author(s):  
Marcelo Trovó ◽  
Paulo Takeo Sano ◽  
Claudio Nicoletti De Fraga
Keyword(s):  
New Species ◽  
Endangered Species ◽  
Morphological Variation ◽  
Conservation Status ◽  
Similar Species ◽  
Distribution Map ◽  
Espírito Santo ◽  
Critically Endangered Species ◽  
Espirito Santo ◽  
A New Species

We describe and illustrate Paepalanthus capixaba, a new species of Paepalanthus ser. Paepalanthus. The species is endemic to Espírito Santo state and restricted to a very distinct and endangered area, which comprises a mosaic of quartzitic sandy patches within a granitic argillaceous site. The indument of leaves, spathes, and scapes is crucial to recognize the taxon as a unique entity. The species is compared to Paepalanthus klotzschianus, the morphologically most similar species. An official conservation status of critically endangered species was assessed by the Centro Nacional de Conservação da Flora committee. Comments on the occurrence area and the morphological variation of the species, as well as a distribution map, photos, and illustrations are provided.

Aristolochia luudamcui (Aristolochiaceae), a new species from northern Vietnam

Phytotaxa ◽  
2021 ◽  
Vol 527 (1) ◽  
pp. 67-74
Author(s):  
LONG KE PHAN ◽  
STEFAN WANKE ◽  
CHRISTOPH NEINHUIS ◽  
TRUONG VAN DO
Keyword(s):  
New Species ◽  
Conservation Status ◽  
The Other ◽  
Similar Species ◽  
Leaf Lamina ◽  
Northern Vietnam ◽  
Inner Surface ◽  
A New Species

Aristolochia luudamcui (Aristolochia subgen. Siphisia, Aristolochiaceae), a new species from Vietnam, previously misidentified as A. utriformis, is described and illustrated here. The new species is most similar to A. pseudoutriformis and A. utriformis concerning the morphology of the leaf lamina, the color of the perianth, and the shape of the limb, but A. luudamcui can be distinguished from the other two species by having a deeply 3-lobed limb and a glabrous, yellow inner surface of limb lobes. A detailed description, information on ecology, phenology, distribution, usage, a provisional assessment of the conservation status of the new species, and a comparison with morphologically similar species are provided as well.

A new species of Mandevilla (Apocynaceae; Apocynoideae) from Mexico

Phytotaxa ◽  
2017 ◽  
Vol 319 (1) ◽  
pp. 93
Author(s):  
LEONARDO O. ALVARADO-CÁRDENAS ◽  
LUCIO LOZADA-PÉREZ
Keyword(s):  
New Species ◽  
Central America ◽  
Conservation Status ◽  
The Other ◽  
Similar Species ◽  
Distribution Map ◽  
A New Species

We describe and illustrate a new species of Mandevilla for the states of Oaxaca and Veracruz, Mexico. Mandevilla sherlockii sp. nov. can be separated from the other similar species of the genus by its subcoriaceous leaf blades and inflorescences with a conspicuously curved rachis between each flower. Including this new species, Mexico is a hotspot for the genus with a 24 species, 11 of which are endemic. We provide a distribution map, suggest a conservation status for the new species, and provide a key for the species of Mandevilla found in Mexico and Central America.

Paepalanthus echinoides (Eriocaulaceae), a new species from central Brazil with notes on leaf and scape anatomy

Phytotaxa ◽  
2015 ◽  
Vol 231 (1) ◽  
pp. 81 ◽  
Author(s):  
Marcelo Trovó ◽  
Arthur Silva ◽  
Alessandra Ike Coan
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Conservation Status ◽  
The Other ◽  
Distribution Map ◽  
Central Brazil ◽  
A New Species

Paepalanthus echinoides, a new species of Paepalanthus sect. Conodiscus, is described and illustrated. This new species is endemic to central Brazil, growing in sandy and humid soils. It is easily distinguished by its dimerous flowers, small leaves arranged in a rosette, the capillaceous and numerous scapes, the small capitula, and the adpressed, dark brown spathes. We present comparisons with P. sphaerocephalus and P. exiguus, the other two species of P. sect. Conodiscus. We also provide a distribution map and photographs, as well as comments on morphological variation, anatomy of leaves and scapes, habitat, phenology, and conservation status.

scholarly journals Aristolochia quiricoana (Aristolochiaceae), a new species from southern Costa Rica

2021 ◽  
Author(s):  
José Esteban Jiménez ◽  
Marco Cedeño-Fonseca ◽  
Mario A. Blanco
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Buenos Aires ◽  
Conservation Status ◽  
Similar Species ◽  
New Taxon ◽  
Botanical Exploration ◽  
Floral Color ◽  
Morphological Distinction ◽  
A New Species

Background and Aims: Aristolochia is the largest genus in Aristolochiaceae and is widely distributed in the world. A recent synopsis of Aristolochia in Costa Rica recognized 19 species; nevertheless, recent botanical exploration in southwestern Costa Rica has revealed yet another new species of this genus. Methods: The new species resulted from fieldwork in Buenos Aires, Puntarenas Province. Specimens from several herbaria were examined, as well as the type material of the most morphologically similar species. Comments about its distribution, habitat, phenology, conservation status and morphological distinction from related species are provided.Key results: Aristolochia quiricoana, a member of Aristolochia series Thyrsicae, is described and illustrated from the southern Pacific region of Costa Rica, where it is apparently endemic. It is similar to A. ornithorhyncha, from which it is distinguished by its shorter pedicels, wider, oblong perigone limbs with a shorter appendix, and a different floral color pattern.Conclusions: The new taxon described here represents the 22nd species documented in Aristolochia series Thyrsicae, as well as the 20th species of the genus from Costa Rica.

scholarly journals Anemopaegma kawense (Bignoniaceae), a new species from the Kaw Mountain (French Guiana), with notes on related species and a key to the genus in the Guianas

2021 ◽  
Vol 154 (2) ◽  
pp. 296-306
Author(s):  
Olivier Lachenaud ◽  
Fabiana Firetti ◽  
Lúcia G. Lohmann
Keyword(s):  
New Species ◽  
French Guiana ◽  
Conservation Status ◽  
Iucn Red List ◽  
Herbarium Specimens ◽  
Similar Species ◽  
Centre Of Diversity ◽  
North Eastern ◽  
The Guianas ◽  
A New Species

Background and aims – The genus Anemopaegma (Bignoniaceae) includes around 47 species and has its centre of diversity in Brazil. Here, we describe and illustrate a new species from French Guiana, Anemopaegma kawense, and compare it to the two most similar species, A. foetidum and A. granvillei. We further assess the conservation status of all three species.Material and methods – Morphological descriptions are based on herbarium specimens deposited at BM, BR, CAY, INPA, K, MO, P, SPF, and U, and, in the case of the newly described species, also on field observations. The conservation status assessments follow the IUCN Red List criteria.Key results – Anemopaegma kawense differs from both A. foetidum and A. granvillei by its densely villose twigs, longitudinally plicate leaflets with secondary veins not or hardly prominent below, and tertiary veins impressed below. It is further separated from A. foetidum by the leaflets that are villose below and the calyx that is entirely pubescent outside. On the other hand, A. kawense differs from A. granvillei by the densely lepidote outer surface of the corolla, shorter petiolules, leaflets with midrib impressed above, shorter bracts and bracteoles, inflorescence peduncle exceeding the rachis, and pedicels densely puberulous, not lepidote or only sparsely so at the apex. This species is endemic to the Kaw Mountain in north-eastern French Guiana, where it grows in low stunted forest on laterite; it is assessed as Endangered according to the IUCN criteria. New descriptions are provided for A. granvillei, which is newly reported from Suriname, and for A. foetidum, which is newly reported from French Guiana; these two species are assessed as Endangered and Least Concern, respectively. Lectotypes are designated for A. maguirei, which is here synonymised with A. foetidum, and for A. umbellatum, another synonym of that species. A key to the 12 species of Anemopaegma occurring in the Guianas is presented.

Novelties in Mimosa sect. Mimosa ser. Mimosa subser. Polycephalae: a new species, new status, and new synonyms

Phytotaxa ◽  
2021 ◽  
Vol 505 (2) ◽  
pp. 121-138
Author(s):  
THAINARA POLICARPO MENDES ◽  
MARCELO FRAGOMENI SIMON ◽  
ANA PAULA FORTUNA PEREZ ◽  
Marcos José da Silva
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Conservation Status ◽  
Environmental Preferences ◽  
New Name ◽  
New Synonyms ◽  
Taxonomic Studies ◽  
A New Species

Taxonomic studies of Mimosa subser. Polycephalae revealed a new species and indicated the need for taxonomic and nomenclatural adjustments in the group. Mimosa pseudoracemosa is described and illustrated as a new species from Goiás State in central-western Brazil. We discuss its geographic distribution, environmental preferences, phenology and conservation status and compare it with the morphologically similar M. pseudoradula and M. flavocaesia. A new status for M. pseudoradula var. detonsa and a new name are proposed (= M. detonsa), including M. pseudoradula var. anapolitana and M. pseudoradula var. crystallites as its synonyms, as well an updated circumscription for M. pseudoradula without the admission of varieties. We also present descriptions, images, maps, comments on their distributions and morphological relationships, flowering and fruiting periods, and conservation statuses. In addition to the morphological and geographic discontinuities of the aforementioned taxa, their trichome micromorphology supported the establishment of the new species, as well as the taxonomic decisions involving M. pseudoradula.

Astragalus dinawarii (section Incani), a New Species from the Talesh Mountains, Northwestern Iran

2021 ◽  
Vol 29 ◽  
pp. 221-226
Author(s):  
Mahmoud Bidarlord ◽  
Farrokh Ghahremaninejad
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Color Images ◽  
Similar Species ◽  
Northwestern Iran ◽  
Reproductive Characters ◽  
A New Species

Astragalus dinawarii Bidarlord & F. Ghahrem. (Fabaceae) is described as a new species based on material collected on the Talesh Mountains, northwestern Iran. This species belongs to a large bifurcating section, Astragalus L. sect. Incani DC. Morphologically, it is close to A. bukanensis Maassoumi & Podlech, A. diversus Podlech & Maassoumi, and A. dilutuloides Maassoumi, F. Ghahrem. & Bagheri, sharing several densely hairy leaflets and stipitate legumes. This species is easily distinguished from similar species by a set of both vegetative and reproductive characters such as size, shape, number of leaflets, shorter calyx, and longer legume stipe. A detailed description and comparisons with similar taxa, color images, distribution and habitat, and conservation status of the new species are provided.

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