Flora do município de Massapê, Estado do Ceará, Brasil: Convolvulaceae Juss.

Abstract— Evolvulus linarioides has frequently been confused with E. saxifragus due to overlap of their morphological characters. A careful morphological analysis of herbarium specimens and protologues evidenced no support for considering the two taxa as distinct entities. We therefore propose here the synonymization of E. linarioides under E. saxifragus, and we propose a neotype for the name now synonymized. In addition, we found that the morphotype often cited as E. linarioides from Bahia State, Brazil, cannot be included among the morphological variations of E. saxifragus, being distinguished by leaf size, prominence of the main vein, the length of the peduncle in relation to the pedicel, the presence of epidermal vesicles on anthers, the lengths of the styles, and the shapes of their stigmas and papillae. We therefore propose this morphotype as a new species, E. longipedicellatus, endemic to the Caatinga domain. A complete morphological description, illustrations, taxonomic and ecological comments, conservation status, morphoanatomical data, and a distribution map are provided.

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Novelties in Evolvulus from the Caatinga Domain, Brazil: A New Synonym, a Neotypification, and a New Species Evidenced by Morphoanatomical Data

Santos

Silva

Buril

2022

Systematic Botany

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A New Species of Evolvulus (Convolvulaceae): A Rare and Threatened Species from the Brazilian Cerrado, a Neotropical Biodiversity Hotspot

et al. 2022

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Abstract— As part of the taxonomic revision of Evolvulus section Lagopodini (Convolvulaceae), a new species was found in the Brazilian Cerrado, a Neotropical biodiversity hotspot, and it is informally categorized herein as endangered. Evolvulus veadeirensis sp. nov. is characterized by the subshrub habit, slender and cylindrical stems, lanceolate leaves, leaf base that is attenuate or obtuse, and clavate stigmatic lobes. Among the species in that section, E. veadeirensis sp. nov. is more similar to E. altissimus, differing from the latter mainly by height, the shape of the leaf blade, leaf apex, and the stigmatic lobes. A diagnosis, morphological descriptions, illustrations, taxonomic comments, informal conservation status, distribution map, photographs, and an identification key for species from Chapada dos Veadeiros are presented.

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A New Species of Evolvulus (Convolvulaceae) with Golden Hairs from the Brazilian Cerrado

2023

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Abstract— A new species of Evolvulus from the Brazilian Cerrado, a savanna biodiversity hotspot, is described here. Evolvulus aureus sp. nov. is similar to E. passerinoides, both found in Cerrado, and share erect stems (also decumbent in E. passerinoides), branched at the base, leaves spiral, flat, with acute apex and leaf base rounded, and axillary flowers. They can be distinguished by the indument type and by its color when herborized, shape of the leaf blade, visibility of secondary veins, sepal length, and anther shape. This new species is circumscribed into E. sect. Passerinoidei based on erect stem, axillary and solitary flowers, and funnelform corolla. A diagnosis, morphological description, illustrations, taxonomic notes, informal conservation status, distribution map, and an identification key are provided. Keywords—Biodiversity, Cresseae, endemic species, Neotropics, Savanna.

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Flora do município de Massapê, Estado do Ceará, Brasil: Convolvulaceae Juss.

Cited by 3 publications

References 9 publications

Novelties in Evolvulus from the Caatinga Domain, Brazil: A New Synonym, a Neotypification, and a New Species Evidenced by Morphoanatomical Data

Novelties in Evolvulus from the Caatinga Domain, Brazil: A New Synonym, a Neotypification, and a New Species Evidenced by Morphoanatomical Data

A New Species of Evolvulus (Convolvulaceae): A Rare and Threatened Species from the Brazilian Cerrado, a Neotropical Biodiversity Hotspot

A New Species of Evolvulus (Convolvulaceae) with Golden Hairs from the Brazilian Cerrado

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