scholarly journals Isoetes dubsii and Isoetes santacruzensis, two new species from lowland areas in South America

PhytoKeys ◽  
2019 ◽  
Vol 131 ◽  
pp. 57-67
Author(s):  
Jovani B. de S. Pereira ◽  
José Tasso F. Guimaraes ◽  
Maurício T. C. Watanabe
Keyword(s):  
New Species ◽  
South America ◽  
Current Knowledge ◽  
Conservation Status ◽  
Iucn Red List ◽  
Similar Species ◽  
Two New Species ◽  
Data Deficient ◽  
Iucn Red List Criteria ◽  
Brazilian Pantanal

Isoetes dubsiisp. nov. and I. santacruzensissp. nov., two new species from lowland areas in South America, are described, illustrated and compared to similar species. Isoetes dubsii can be distinguished from other species of the Brazilian Pantanal wetlands by a set of characters including leaves that are long, flexuous and trigonal in transverse section, tri-lobate stems, rudimentary velum, pustulate megaspores of 310‒390 µm diameter and laesurae of the megaspore at least four times wider than high. Isoetes santacruzensis has flexuous, filiform leaves, 0.4–0.8 mm wide at mid length and reaching up to 15 cm long, black or reddish-black sporangia, sclerified phyllopodia and sparsely verrucate megaspores of 320‒390 µm in diameter. We also include a key for species from the Brazilian Pantanal wetlands and Bolivia and spore images for all species that are discussed. Isoetes dubsii and I. santacruzensis are only known from their type localities and they may deserve special attention concerning their conservation status. However, based on our current knowledge on these species and according to IUCN Red List criteria, they are assessed here as data deficient (DD).

Two new and threatened Eugenia (Myrtaceae) species from the Atlantic Forest of Espírito Santo, Brazil

Phytotaxa ◽  
2020 ◽  
Vol 468 (2) ◽  
pp. 203-213
Author(s):  
KARINNE SAMPAIO VALDEMARIN ◽  
VINICIUS CASTRO SOUZA ◽  
FIORELLA F. MAZINE
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Iucn Red List ◽  
Red List ◽  
Unusual Feature ◽  
Similar Species ◽  
Espírito Santo ◽  
Two New Species ◽  
Iucn Red List Criteria ◽  
Espirito Santo

During our studies on Eugenia of Espírito Santo state, Brazil, two new species came out of our attention being here described, illustrated and compared morphologically with their similar species. Eugenia mestrealvarensis can be easily recognised by its clusters of fascicules on trunk with pedicellate flowers, an unusual feature among the species of the genus, and E. penduliflora by its two-flowered raceme with later vegetative proliferation with pendular pedicels. Both species are evaluated as critically endangered following IUCN red list criteria, being E. mestrealvarensis restricted to the Área de Proteção Ambiental Estadual de Mestre Álvaro, and E. penduliflora to the Reserva Natural Vale, in Espírito Santo state.

A new species of poison-dart frog (Anura: Dendrobatidae) from Manu province, Amazon region of southeastern Peru, with notes on its natural history, bioacoustics, phylogenetics, and recommended conservation status

Zootaxa ◽  
2017 ◽  
Vol 4221 (1) ◽  
pp. 71 ◽  
Author(s):  
SHIRLEY J. SERRANO-ROJAS ◽  
ANDREW WHITWORTH ◽  
JAIME VILLACAMPA ◽  
RUDOLF VON MAY ◽  
JOSÉ M. PADIAL ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Conservation Status ◽  
Buffer Zone ◽  
Iucn Red List ◽  
Advertisement Call ◽  
Similar Species ◽  
Hind Limbs ◽  
Iucn Red List Criteria ◽  
A New Species

We describe and name a new species of poison-dart frog from the Amazonian slopes of the Andes in Manu Province, Madre de Dios Department, Peru; specifically within the Amarakaeri Communal Reserve and the buffer zone of Manu National Park. Ameerega shihuemoy sp. nov. is supported by a unique combination of characters: black dorsum with cream to light orange dorsolateral lines, blue belly reticulated with black, and the lack of axillary, thigh and calf flash marks. Within Ameerega, it shares the general appearance of A. altamazonica, A. boliviana, A. hahneli, A. ignipedis, A. petersi, A. picta, A. pongoensis, A. pulchripecta, A. simulans, A. smaragdina, and A. yungicola; each possessing a granular black to brown dorsum, a light labial bar, a conspicuous dorsolateral line running from the snout to the groin, and a metallic blue belly and underside of arms and hind limbs. From most of these species it can be distinguished by lacking flash marks on the axillae, thighs, and calves (absent in only A. boliviana and A. smaragdina, most A. petersi, and some A. pongoensis), by having bright cream to orange dorsolateral stripes (white, intense yellow, or green in all other species, with the exception of A. picta), and by its blue belly reticulated with black (bluish white and black in A. boliviana, green and blue with black marbling in A. petersi, and green and blue lacking black marbling in A. smaragdina). Its mating call also shows clear differences to morphologically similar species, with a lower note repetition rate, longer space between calls, and higher fundamental and dominant frequencies. Phylogenetic analyses based on the 16S mitochondrial rRNA fragment also support the distinctiveness of the new species and suggest that A. shihuemoy is most closely related to Ameerega macero, A. altamazonica, A. rubriventris, and two undescribed species (Ameerega sp. from Porto Walter, Acre, Brazil, and Ameerega sp. from Ivochote, Cusco, Peru). Genetically, the new species is most similar to the sympatric A. macero, from which it clearly differs in characteristics of its advertisement call and coloration. The new species is found near rocky streams during the dry season and near temporary water bodies during the rainy season. Tadpoles are found in lentic water along streams, or in shallow, slow-moving streams. Given its small geographic range, we recommend that A. shihuemoy should be considered 'Near threatened' (NT) according to IUCN Red List criteria. 

Two new species of Begonia (sect. Platycentrum, Begoniaceae) from the Central Highlands of Vietnam: B. villosula and B. lophura

Phytotaxa ◽  
2021 ◽  
Vol 510 (3) ◽  
Author(s):  
THANH SON HOANG ◽  
CHE-WEI LIN
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Staminate Flower ◽  
Pistillate Flower ◽  
Iucn Red List ◽  
Red List ◽  
Two New Species ◽  
Central Highlands ◽  
Iucn Red List Criteria ◽  
Axillary Inflorescence

Two new species of Begonia L., namely Begonia villosula T.S.Hoang & C.W.Lin and B. lophura T.S.Hoang & C.W.Lin, from the Central Highlands of Vietnam, are described and illustrated. They are assigned to Begonia sect. Platycentrum based on several characters including axillary inflorescence, 4-tepaled staminate flower and 5-tepaled pistillate flower with bilocular ovary, each with two placentae. Begonia villosula resembles B. thomsonii, but it is different in its leaf margins crenate to crenulate (vs. irregularly serrulate), stamens 80–120 (vs. 35–70), pistillate flower 4-tepaled (vs. 5-tepaled) and ovary hirsute (vs. villous). Begonia lophura is somewhat similar to B. pavonina, but it is different in having widely ovate (vs. ovate) and abaxially red hirsute (vs. glabrous) leaves, bracts persistent (vs. caducous), tepals hirsute (vs. glabrous) in both of staminate and pistillate flowers, capsule scabrous (vs. glabrous) and abaxial wing strongly swollen (vs. thin, not swollen). The conservation status of the two new species are assessed as Vulnerable according to the IUCN Red List criteria.

Two new species of Ctenitis (Dryopteridaceae) from South America and taxonomic notes on similar species

Phytotaxa ◽  
2015 ◽  
Vol 239 (1) ◽  
pp. 1 ◽  
Author(s):  
Raquel Stauffer Viveros ◽  
Alexandre Salino
Keyword(s):  
New Species ◽  
South America ◽  
Identification Key ◽  
Northeastern Brazil ◽  
Southeastern Brazil ◽  
Similar Species ◽  
New Synonyms ◽  
Two New Species

Two new species of Ctenitis (Dryopteridaceae) from South America are described and illustrated: Ctenitis christensenii is endemic to southeastern Brazil and C. glandulosa occurs from southeastern to northeastern Brazil and in Guyana. An identification key and notes about the distribution, habitat and taxonomy of the new species, C. falciculata and allies are provided. Moreover, seven lectotypifications and two new synonyms are proposed.

scholarly journals Two new species of Sonerila Roxb. (Melastomataceae) from Laos

2021 ◽  
Vol 755 ◽  
pp. 136-148
Author(s):  
Phongphayboun Phonepaseuth ◽  
Phetlasy Souladeth ◽  
Keooudone Souvannakhoummane ◽  
Thyraphon Vongthavone ◽  
Shuichiro Tagane
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Similar Species ◽  
Ecological Information ◽  
Two New Species

Two new species of Sonerila Roxb. (Melastomataceae), S. erectifolia Phonep., Soulad. & Tagane sp. nov. from southern Laos, and S. souvannii Phonep. & Soulad. sp. nov. from central Laos, are described and illustrated. Comparisons with morphologically similar species are presented, along with ecological information and preliminary conservation status. A key to the species of Sonerila in Laos is also provided.

scholarly journals Chiococca grandiflora (Rubiaceae), a new species from Northern Mexico

PhytoKeys ◽  
2018 ◽  
Vol 98 ◽  
pp. 73-83 ◽  
Author(s):  
David H. Lorence ◽  
Thomas R. Van Devender ◽  
George M. Ferguson
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Iucn Red List ◽  
Red List ◽  
Northern Mexico ◽  
Iucn Red List Criteria ◽  
A New Species

The new species Chiococcagrandiflora Lorence & T.Van Devender from Sinaloa and Sonora, Mexico differs from its congeners by its larger, showy white flowers in compact cymes of 3–9, and infundibuliform corollas 16–20 mm long with tubes 13–17 mm long and lobes 3–3.5 mm long. Its distribution, habitat, and relationships are outlined. The conservation status for this species is estimated to be Endangered (EN) based on IUCN Red List Criteria.

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.

Recent Progress in Taxonomic Studies, Biogeographic Analysis, and Revised Checklist of Amphibians in Indochina

2021 ◽  
Vol 28 (3A) ◽  
pp. 1-110
Author(s):  
Nikolay A. Poyarkov ◽  
Tan Van Nguyen ◽  
Evgeniy S. Popov ◽  
Peter Geissler ◽  
Parinya Pawangkhanant ◽  
...  
Keyword(s):  
Conservation Status ◽  
Distribution Patterns ◽  
Iucn Red List ◽  
Type Specimens ◽  
Amphibian Species ◽  
Biogeographic Patterns ◽  
South Vietnam ◽  
Data Deficient ◽  
Iucn Red List Criteria ◽  
Annotated Checklist

The Indochinese Peninsula is recognized as one of the key global biodiversity hotspots. The amphibian fauna of Indochina (including Vietnam, Laos, Cambodia and Thailand) is one of the richest in the world. About 60% of the known species were described within the last 20 years. We review the literature and our data to assess all recent discoveries and taxonomic changes and compile the first annotated checklist of the amphibian fauna of Indochina since the middle of the 20th century, including updated faunal lists for Vietnam and Thailand. Amphibian checklists for Laos and Cambodia are published for the first time. For each species we provide the following information: scientific name; recommended common name in English; information on type specimens; type locality; data on its distribution within Indochina and beyond; IUCN conservation status; taxonomic comment and the most important references. We review the distribution of each species across the 23 biogeographic subregions of Indochina, estimate the similarity among the regional faunas and evaluate their species richness and endemism. In total we record 423 amphibian species belonging to three orders, 11 families and 71 genera; 199 species (47%) are endemic to Indochina. Comprising 270 known species, the amphibian fauna of Vietnam is the richest (98 endemics, 36.3%), followed by Thailand with 194 species (29 endemics, 14.9%), Laos with 121 species (13 endemics, 10.7%), and Cambodia with 72 species (6 endemics, 8.3%). A cluster analysis of faunal similarity between the subregions shows two major assemblages, divided by the Isthmus of Kra. Within the northern mainland portion of Indochina three clusters can be distinguished: (1) northeastern and northwestern uplands of Vietnam and northern Laos; (2) Northern, Central, and Southern Annamites, the Bolaven Plateau, and central-south Vietnam lowlands; (3) western Indochinese subregions. We identify the Northeast and Northwest Uplands of Vietnam, the Northern, Central and Southern Annamites, the Cardamom Mountains, the mountains of Northeast Thailand, Northern Tenasserim and southern Peninsular Thailand as nine major centers of diversity and endemism of Indochinese amphibians. The analysis of amphibian distribution patterns across Indochina suggests the presence of 14 chorotypes grouped in five major range types. Our results underline the role of Indochina as a key area for amphibian diversity and conservation. Among 423 species of Indochinese amphibians, 152 species (35.9%) were considered as data deficient (DD) or were not evaluated (NE) according to the IUCN Red List criteria; while 76 species (18.0%) were considered vulnerable (VU), endangered (EN) or critically endangered (CR), 20 species (4.7%) were considered to be near threatened (NT), and 175 species (41.4%) to be of the least concern (LC). Our study thus has implications for further conservation efforts on regional and global levels, as well as for understanding the biogeographic patterns of amphibian richness and endemism in Asia.

Two new species of Glandularia (Verbenaceae) from Rio Grande do Sul and an updated key to the species occurring in Brazil

Phytotaxa ◽  
2019 ◽  
Vol 411 (1) ◽  
pp. 39-48 ◽  
Author(s):  
VERÔNICA A. THODE ◽  
SÉRGIO AUGUSTO DE LORETO BORDIGNON
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Conservation Status ◽  
Rio Grande ◽  
Identification Key ◽  
Similar Species ◽  
Rio Grande Do Sul ◽  
Brazilian State ◽  
Two New Species

Two species of Glandularia from Rio Grande do Sul Brazilian state are described, G. rupestris V. Thode & Bordignon and G. sessilifolia V. Thode & Bordignon. Detailed morphological descriptions, geographical distribution, evaluation of their IUCN conservation status and photographs are presented. Comparison tables with morphologically similar species occurring in Rio Grande do Sul and an identification key to the species occurring in Brazil are also provided.

TWO NEW SPECIES OF ANDEAN BEGONIA (BEGONIACEAE)

2016 ◽  
Vol 73 (1) ◽  
pp. 143-152 ◽  
Author(s):  
M. C. Tebbitt
Keyword(s):  
New Species ◽  
South America ◽  
Type Species ◽  
La Paz ◽  
Ongoing Research ◽  
Narrow Endemic ◽  
Two New Species ◽  
Andean South America ◽  
Data Deficient ◽  
Sectional Classification

Two new species of Begonia (Begoniaceae) from Andean South America are described and illustrated. Begonia heliantha Tebbitt is classified in B. sect. Eupetalum and is known from the Puno Region of Peru and has also been tentatively identified from photographs taken in La Paz Department of Bolivia. Begonia urubambensis Tebbitt is affiliated with a group of species currently classified in B. sect. Knesebeckia. This group of species is informally named here the B. acerifolia group. Begonia sect. Knesebeckia is polyphyletic since the B. acerifolia group does not include the type species of the section. Ongoing research aims to recircumscribe this section. Begonia urubambensis is not assigned to a section given the changes needed to the sectional classification system. Begonia urubambensis is a narrow endemic of La Convención Province (Cusco Region) of Peru. Begonia heliantha is assigned the IUCN category of Data Deficient (DD), while B. urubambensis is assigned the IUCN category of Vulnerable (VU-D2).

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