A taxonomic reassessment of Croton grandivelus, including recognition of a new species, C. insignis, and the redefinition of C. fulvus (Euphorbiaceae)

Phytotaxa ◽  
2020 ◽  
Vol 472 (3) ◽  
pp. 207-239
Author(s):  
RODOLFO CARNEIRO SODRÉ ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
New Species ◽  
South America ◽  
Leaf Anatomy ◽  
Conservation Status ◽  
Sensu Stricto ◽  
Environmental Preferences ◽  
Distribution Maps ◽  
New Synonyms ◽  
A New Species ◽  
High Diversity

Croton is one of the largest genera of Angiosperms, with a pantropical distribution and a high diversity in South America, where 500 of its species occur. Croton sect. Adenophylli, its largest section, is characterized mainly by the fruit columella with three terminal ascending and inflated appendices and is distributed across the Neotropics, with the Cerrado as one of its centers of diversity. One of the binomials in the section, Croton grandivelus, has been applied to a broadly circumscribed entity that is here treated as including three species, C. grandivelus sensu stricto, C. fulvus and C. insignis, the latter described as a new species. We present a taxonomic treatment for these three species with descriptions, photographs, an illustration for the new species, an identification key, distribution maps, and commentary on the taxonomy, geographical distribution, environmental preferences, conservation status, flowering and fruiting times, morphological relationships and notes about the leaf anatomy and micromorphology of foliar trichomes. As part of this process, we propose 23 new synonyms and 15 lectotypifications.

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.

A Synopsis of Dicliptera (Acanthaceae) in Brazil, with the Description of Two New Species

2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas
Keyword(s):  
New Species ◽  
South America ◽  
The State ◽  
Northeastern Brazil ◽  
Mato Grosso ◽  
The North ◽  
New Synonyms ◽  
Two New Species ◽  
Mato Grosso Do Sul ◽  
A New Species

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.

New Findings on Scrophularia sect. Mimulopsis (Scrophulariaceae) from Iran

2019 ◽  
Vol 27 (4) ◽  
pp. 238-247
Author(s):  
Massoud Ranjbar ◽  
Narges Rahchamani
Keyword(s):  
New Species ◽  
Pollen Morphology ◽  
Conservation Status ◽  
Morphological Characters ◽  
Northern Iran ◽  
Distribution Maps ◽  
New Findings ◽  
Tehran Province ◽  
Micromorphological Characters ◽  
A New Species

Scrophularia dianatnejadii Ranjbar & Rahchamani, a new species from Tehran Province in northern Iran, is described and illustrated. It is closely related to S. amplexicaulis Benth. and shares with it some diagnostic morphological characters such as habit, plant indument, phyllotaxy, and corolla shape and color. Both species are placed in Scrophularia L. sect. Mimulopsis Boiss. Macro- and micromorphological characters of the two are examined and compared. Pollen morphology of these species is investigated using SEM. Detailed descriptions, illustrations, distribution maps, and conservation status of both species are provided.

scholarly journals A new species of Pseudancistrus from the Rio Caroni Venezuela (Siluriformes: Loricariidae)

Zootaxa ◽  
2008 ◽  
Vol 1731 (1) ◽  
pp. 33 ◽  
Author(s):  
JONATHAN W. ARMBRUSTER ◽  
DONALD C. TAPHORN
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Color Pattern ◽  
Sensu Stricto ◽  
Dorsal Plate ◽  
Stream Capture ◽  
Especie Nueva ◽  
Del Rio ◽  
Relationship Of ◽  
A New Species

Pseudancistrus reus is a new species from the Río Caroní (Río Orinoco drainage) of Venezuela known from two individuals. It differs from all other Pseudancistrus by having a color pattern consisting of alternating dark and light bars. In addition, it differs from all except P. genisetiger and P. papariae by having an incomplete mid-dorsal plate row and from P. genisetiger and P. papariae by having 18 contiguous mid-dorsal plates vs. 14 plates, a plateless break and then two more plates at the end of the caudal peduncle. The type locality of P. reus was submerged by the construction of the Caruachi dam, and is also the only known locality of the gymnotiform Sternarchorhynchus gnomus, making it imperative that the conservation status of these and other potential Caroní endemics be assessed. Pseudancistrus reus is the first species of Pseudancistrus sensu stricto from the Orinoco. Although the relationship of the species to other Pseudancistrus is unknown, P. reus may have gained access to the Orinoco either via stream capture between the Caroní and the Rio Uraricoera (Rio Branco – Rio Negro drainage) or via stream capture between the Caroní and either the Cuyuní or Mazaruni Rivers (Essequibo River drainage).key word: Siluriformes, Loricariidae, taxonomySe describe como especie nueva Pseudancistrus reus del río Caroní (cuenca del río Orinoco) en Venezuela, basada en dos ejemplares. Difiere de todas los demás Pseudancistrus en tener un patrón de pigmentación que consiste de barras claras alternando con oscuras. Además, difiere de todas los demás, menos P. genisetiger y P. papariae en tener la fila medio-dorsal de placas incompleta, y de P. genisetiger y P. papariae difiere en tener 18 placas medio-dorsales contiguas vs. 14 placas seguidas por una zona sin placas y luego dos placas más en el pedúnculo caudal). La localidad típica de P. reus fue sumergida por las aguas del embalse Caruachi. Ese sitio es también la localidad típica de Sternarchorhynchus gnomus, haciéndolo imprescindible evaluar el estado de conservación de estas dos especies más las otras endémicas del bajo Caroní. Pseudancistrus reus es la primera especies de Pseudancistrus sensu stricto de la cuenca del río Orinoco. Aunque desconocemos las relaciones con otras Pseudancistrus, P. reus puede haber ganado acceso al Caroní vía la captura de caños en las cabeceras del río Uraricoera-Branco-Negro o del río Cuyuní o Mazaruni, afluentes del río Essequibo.

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.

Leaf anatomy and macro-morphological data support a new species of the legume genus Chamaecrista (Fabaceae, Caesalpinioideae) from Goiás, Brazil

Phytotaxa ◽  
2020 ◽  
Vol 443 (2) ◽  
pp. 167-178
Author(s):  
RAMON GUEDES MATOS ◽  
ALESSANDRO OLIVEIRA DE SOUZA ◽  
IGOR SOARES SANTOS ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
New Species ◽  
Leaf Anatomy ◽  
Morphological Data ◽  
Similar Species ◽  
Conservation Assessment ◽  
Environmental Preferences ◽  
Data Support ◽  
Midwest Region ◽  
Taxonomic Studies ◽  
A New Species

Analysis of Brazilian collections and foreign herbaria, specially of those from the Midwest region of Brazil for taxonomic studies on Chamaecrista sect. Absus subsect. Absus developed by the authors, resulted in a discover a new species. Chamaecrista barnebyana is here described, illustrated, and commented on its distribution, conservation assessment, including environmental preferences, flowering and fruiting, and position systematic. Additionally, it is compared with morphologically similar species using macro-morphological and foliar anatomy characteristics.

Novelties in Chamaecrista (Fabaceae, Caesalpinioideae) from the Brazilian Cerrado

Phytotaxa ◽  
2015 ◽  
Vol 239 (2) ◽  
pp. 143 ◽  
Author(s):  
Alessandro Oliveira Souza ◽  
MARCOS JOSÉ DA SILVA ◽  
ALEXANDRE ANTÔNIO ALONSO
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Leaf Anatomy ◽  
Endemic Species ◽  
Conservation Status ◽  
Minas Gerais ◽  
Brazilian Cerrado ◽  
A New Species

Chamaecrista irwiniana, a new species of Chamaecrista sect. Absus subsect. Absus ser. Rigidulae, is here described and illustrated. Its morphological affinities, geographical distribution, ecology, conservation status, and information about leaf anatomy are also presented. Additionally, a complete description, distribution, and the first illustration of C. nummulariifolia, an endemic species to the states of Goiás and Minas Gerais, classified as vulnerable according to the IUCN guidelines, are provided.

A new species of Harpagobaetis Mol, with amended diagnosis of the genus, and new considerations on predatory species of Baetidae (Ephemeroptera) from South America

Zootaxa ◽  
2019 ◽  
Vol 4551 (2) ◽  
pp. 195
Author(s):  
PAULO VILELA CRUZ ◽  
NEUSA HAMADA
Keyword(s):  
New Species ◽  
South America ◽  
Conservation Status ◽  
Feeding Habit ◽  
Gut Content Analysis ◽  
Gut Content ◽  
Direct Observations ◽  
Morphological Adaptations ◽  
Southern Amazonia ◽  
A New Species

A remarkable new predatory species of Baetidae was collected in a relict patch of Amazonian savanna in Brazil. The feeding habit of the nymph of this new species is very rare in mayflies. Baetidae is composed of more than 900 species, but only 12 are considered to be predators; in South America, the only species recognized as a predator is Harpagobaetis gulosus Mol 1986. The objectives of this study are to describe Harpagobaetis brigada sp. nov., based on nymphs and to amend the diagnosis of the genus. The predatory habit of the nymphs of the new species was confirmed by gut-content analysis and by direct observations of behavior. Based on similar morphological adaptations, we hypothesized that Adebrotus lugoi Salles, 2010 possesses predatory habit. Harpagobaetis brigada sp. nov. can be classified as psammophilous, inhabiting a threatened stream in a relict patch of savanna in southern Amazonia. Based on these characteristics, we recommend evaluation of this new species to identify its conservation status and to contribute to the assessment of the state of conservation of the Brazilian fauna. 

Allium nazarenum (Amaryllidaceae), a new species of the section Codonoprasum from Israel

Phytotaxa ◽  
2017 ◽  
Vol 327 (3) ◽  
pp. 237 ◽  
Author(s):  
CRISTIAN BRULLO ◽  
SALVATORE BRULLO ◽  
GIANPIETRO GIUSSO DEL GALDO ◽  
CRISTINA SALMERI
Keyword(s):  
New Species ◽  
Plant Communities ◽  
Leaf Anatomy ◽  
Close Relationships ◽  
Conservation Status ◽  
Negev Desert ◽  
The Mediterranean ◽  
A New Species

Allium nazarenum, a new species of A. sect. Codonoprasum, is described and illustrated from Israel. Within this species, two well distinct subspecies have been recognized, represented by the subsp. nazarenum and subsp. ramonense respectively. The first one occurs in northern and central Israel, which falls within the Mediterranean bioclimate, while the second one is circumscribed to the Negev desert. Both taxa are diploid with 2n = 16 and are found on various substrata usually in the batha or steppic plant communities. This species shows close relationships with the species belonging to the A. staticiforme group, from which it differs in several relevant diacritic features. Its morphology, karyology, leaf anatomy, ecology, conservation status and taxonomical relationships are examined.

A New Species of Adesmia (Leguminosae, Papilionoideae, Dalbergieae) from Southern Brazil, with Notes on Leaf Anatomy

Phytotaxa ◽  
2021 ◽  
Vol 521 (1) ◽  
pp. 48-56
Author(s):  
THIAGO COBRA E MONTEIRO ◽  
JOÃO RICARDO VIEIRA IGANCI ◽  
DIANA PACHECO SEIXAS ◽  
TATIANE MARIA RODRIGUES ◽  
ANA PAULA FORTUNA-PEREZ
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Leaf Anatomy ◽  
Conservation Status ◽  
Glandular Trichomes ◽  
Taxonomic Study ◽  
Southern Brazil ◽  
Aerial Parts ◽  
A New Species

A revisional taxonomic study of Adesmia subg. Adesmia ser. Bicolores has unveiled a new species from southern Brazil. Adesmia miottoae is described and illustrated here. Its geographic distribution, phenology, conservation status and morphological similarities with its closest relatives, Adesmia punctata and A. incana, are presented. The species is distinguished by glandular trichomes covering all the aerial parts of the plant, except the corolla. These trichomes are shorter than those of Adesmia punctata. Additionally, a detailed anatomical description of the leaflet blade is provided.

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