scholarly journals Dalechampia L. (Euphorbiaceae) in the Brazilian Amazon

2021 ◽  
Vol 21 (4) ◽  
Author(s):  
Jone Clebson Ribeiro Mendes ◽  
Alessandro Silva do Rosário ◽  
Narcísio C. Bigio ◽  
Rafaela Alves Pereira-Silva ◽  
Ricardo de S. Secco

Abstract: A taxonomic treatment of Dalechampia species found in the Brazilian Amazon is presented. The study was based on an analysis of herbarium material (including historical and type collections), specimens collected in the field, and literature. Twenty-three species, distributed in five sections, are recognized. Dalechampia hastata is endemic to the Brazilian Amazon. Among the species surveyed, thirteen species are considered to be Least Concern (LC), and not currently at risk of extinction. Six species (D. attenuistylus, D. brownsbergensis, D. fragrans, D. hastata, D. megacarpa and D. olympiana) are Endangered (EN), three species (D. gentryi, D. heterobractea and D. tenuiramea) are Near Threatened (NT), and D. liesneri is listed with Deficient Data (DD). If we consider the occurrence only in Brazil of three species , the taxa can be designated as Vulnerable (VU). Dalechampia micrantha and D. parvibracteata are lectotypified. The lectotype of D. cissifolia, D. juruana, and D. pernambucensis is clarified. New occurrences are reported for some countries. An identification key, descriptions, taxonomic comments, illustrations, the conservation status, phenological data, and geographic distribution maps are provided.

2021 ◽  
Vol 46 (2) ◽  
pp. 433-445
Author(s):  
Fabio Araújo da Silva ◽  
André dos Santos Bragança Gil ◽  
Camila Fernandes Barra ◽  
Cíntia Kameyama

Abstract— Three new species of Justicia (Acanthaceae), J. montealegrensis, J. multiglandulosa, and J. paraensis from the Brazilian Amazon, discovered during the preparation of a taxonomic treatment of genus for the state of Pará, are herein described and illustrated. Their geographic distribution, habitat, preliminary conservation status, taxonomic comments, line drawings, photo plates, and comparison of diagnostic morphological characters with those of similar taxa are also provided.


Author(s):  
Amanda Macêdo Rocha ◽  
José Iranildo Miranda De Melo

This paper provides a taxonomic assessment and distribution details of the species of the genus Ludwigia L. (Onagraceae) for the Paraíba State, Northeastern Brazil. Six species were found: L. erecta (L.) H.Hara, L. helminthorrhiza (Mart.) H.Hara, L. hyssopifolia (G.Don) Exell, L. leptocarpa (Nutt.) H.Hara, L. nervosa (Poir.) H.Hara and L. octovalvis (Jacq.) P.H.Raven. Ludwigia nervosa was recorded for the first time in the studied area. Our taxonomic treatment comprises an identification key to the species. For each species, description, illustrations, taxonomic comments, flowering and fruiting data, geographic distribution map, and the conservation status for the studied area are provided. Among the recorded species, three were classified as “Near Threatened”, two as “Vulnerable” and one as “Critically Endangered”.


2020 ◽  
Vol 20 ◽  
Author(s):  
Kamilla Lopes Barreto ◽  
Moabe Ferreira Fernandes ◽  
Luciano Paganucci De Queiroz

The taxonomic treatment of Centrosema (Leguminosae) from the State of Bahia, Brazil, is presented. Fifteen species are recognized, which represents 50% of the Centrosema species recorded in Brazil. The treatment includes keys to identification, descriptions, illustrations, general notes and geographic distribution maps for the species in Bahia.


Hoehnea ◽  
2019 ◽  
Vol 46 (1) ◽  
Author(s):  
Guilherme Alves Elias ◽  
Joanna Marie Tucker Lima ◽  
Robson dos Santos

ABSTRACT Palms (Arecaceae) are key elements that contribute to the forest biodiversity of the State of Santa Catarina. However, the official List of Endangered Flora Species of that State is incomplete, including only two Arecaceae species (Butia catarinensis Noblick & Lorenzi and B. eriospatha (Mart. Ex Drude) Becc.). Within this context, this study proposes a revision of the Official List of Arecaceae for Santa Catarina, based on the assessment of the conservation status made for each of the State’s native palm species. To assess the conservation status of the palm species in Santa Catarina, important sources on species distribution were used, including the Global Biodiversity Information Facility (GBIF), a compilation of previously published, herbarium information, field observations, and data from the Floristic and Forest Inventory of Santa Catarina (IFFSC). Information for each species was imported into GeoCAT software (Geospatial Conservation Assessment Tool). All 11 native palm species of Santa Catarina were evaluated. Ten species were considered at risk of extinction according to the IUCN Red List categories and criteria. This large number of palm species at risk of extinction calls attention to the urgent need for updates of the Official List of Endangered Species in the State.


Phytotaxa ◽  
2020 ◽  
Vol 462 (1) ◽  
pp. 1-87
Author(s):  
ALESSANDRO OLIVEIRA DE SOUZA ◽  
MARCOS JOSÉ DA SILVA

Anupdated circumscription and a taxonomic treatment of Chamaecrista sect. Absus subsect. Absus ser. Rigidulae is presented based on the results of previous phylogeny study where the series has emerged as monophyletic with exclusion of two species (C. brachyblepharis and C.ciliolata) and inclusion of two others species (C. botryoides and Ch. sincorana) in its circumscription. This revision resulted from consulting the specialized literature, analyzing of about 1400 collections from national and foreign herbaria. In this new circumscription, the series becomes the largest series of the genus with 32 species endemics to Brazil and distributed mainly in the Brazilian Central Plateau. Two new records in Brazilian states were reported, one to Bahia (Ch. feliciana) and two to Minas Gerais (Ch. benthamiana, Ch. rupestrium); an identification key of the species, morphologic descriptions, notes on taxonomy and geographic distribution of the taxa, conservation status, as well as illustrations and images of diagnostic characters are presented. In addition, the species typification remains updated with all categories indicated first with their respective barcodes.


Author(s):  
Renata Asprino ◽  
André Márcio Amorim

The taxonomic treatment of Hirtella (Chrysobalanaceae) from Bahia State, Brazil, is presented. We recognize 14 species; H. bicornis is recorded for the first time in the state and H. prancei was originally described from this study. The treatment includes an identification key to species, descriptions and comments on taxa, as well as illustrations and geographic distribution maps of species in Bahia. An identification key to the genera of Chrysobalanaceae in the state is also provided.


PhytoKeys ◽  
2021 ◽  
Vol 177 ◽  
pp. 77-116
Author(s):  
Eric Y. Kataoka ◽  
Lúcia G. Lohmann

Martinella Baill. is a genus of Neotropical lianas in tribe Bignonieae (Bignoniaceae). The genus is monophyletic and well supported by morphological and molecular characters. Members of Martinella are characterized by a continuous interpetiolar ridge surrounding the stem, bilobed or 4–5-parted calyces, and minute triangular prophylls of the axillary buds. Generic circumscription remained unchanged since the description of the genus, although unclear species limits remained. Based on extensive fieldwork, herbarium work, and a molecular phylogenetic hypothesis for the genus, we here recognize five species of Martinella. Of these, three were recognized in earlier treatments for the genus, while two represent new species described here, Martinella lanuginosa Kataoka & L.G.Lohmann, sp. nov. and Martinella tomentosa Kataoka & L.G.Lohmann, sp. nov.Martinella iquitoensis A.Samp. is treated as a synonym of M. insculpta Sprague & Sandwith. In addition, one second-step lectotype is designated for Bignonia martini DC., and neotypes are designated for Doxantha longisiliqua Miers and Martinella gollmeri K.Schum. This work provides a full taxonomic treatment for Martinella, including a complete list of synonyms, morphological descriptions, illustrations, photographs, distribution maps, conservation status, and comments for all five species recognized.


2021 ◽  
Vol 46 (1) ◽  
pp. 186-210
Author(s):  
Alejandro Torres-Montúfar ◽  
Hilda Flores-Olvera ◽  
Helga Ochoterena

Abstract—Rogiera (Guettardeae, Rubiaceae) is a Neotropical genus distributed from Mexico to northern South America that includes shrubs, treelets, or trees, which were previously treated in the taxonomically controversial and confused Rondeletia complex. Rogiera can be recognized among other Rubiaceae by the combination of multiflowered inflorescences, heterostylous flowers, quincuncial corolla aestivation, a hairy ring at the corolla mouth, and capsular fruits with loculicidal dehiscence. Despite the recent taxonomic circumscription of Rogiera there is not a comprehensive taxonomic treatment to it. Moreover, regional floristic treatments disagree on the species circumscriptions, with discrepancies in the number of species of Rogiera from 11 to 20. Based on molecular and morphological evidence studied on field and herbarium specimens, we present a taxonomic revision of Rogiera. We recognize ten species; Mexico is the center of diversity with nine species, four of them endemic. An identification key, descriptions, distribution maps, nomenclatural history, phenological data, and illustrations of all the species in the genus are provided for the first time. Several names required lecto- or epitypifications designated here.


ZooKeys ◽  
2015 ◽  
Vol 498 ◽  
pp. 103-126 ◽  
Author(s):  
Ignacio Minoli ◽  
Mariana Morando ◽  
Luciano Javier Avila

Phytotaxa ◽  
2020 ◽  
Vol 472 (3) ◽  
pp. 249-258
Author(s):  
LEONARDO O. ALVARADO-CÁRDENAS ◽  
MARÍA G. CHÁVEZ-HERNÁNDEZ ◽  
JUAN F. PÍO LEÓN

A new species of Gonolobus from northwestern Mexico with green and barbate corollas is described here. Gonolobus naturalistae is morphologically similar to G. barbatus, G. pectinatus, and G. sororius but differs in corolla and corona morphology and distribution. Descriptions, illustrations, morphological comparisons, and geographic distribution maps of these species, as well as their conservation status, are provided. This discovery highlights Mexico as a center of diversity for the genus, with around 40 species recorded, and highlights its endemism, with 48.7% of the species occurring in the country.


Sign in / Sign up

Export Citation Format

Share Document