Results 51 to 60 of about 520 (154)

Patrones de depósito de polen sobre el cuerpo de los polinizadores en comunidades esfingófilas de Argentina subtropical [PDF]

open access: yes, 2014
Patrones de depósito de polen sobre el cuerpo de los polinizadores en comunidades esfingófilas de Argentina Subtropical. Las especies de plantas que coexisten y comparten agentes polinizadores pueden experimentar competencia interespecífica por el ...
Benitez-Vieyra, Santiago Miguel   +3 more
core   +2 more sources

Tropical Refuges with Exceptionally High Phylogenetic Diversity Reveal Contrasting Phylogenetic Structures

open access: yesInternational Journal of Biodiversity, Volume 2015, Issue 1, 2015., 2015
Loss of phylogenetic diversity (PD) has gained increasing attention in conservation biology. However, PD is not equally distributed in a phylogeny and can be better assessed when species relatedness (phylogenetic structure: PS) is also considered. Here, we investigate PD and PS in two refuges of biodiversity in northeastern Brazil: the Bahia Costal ...
Lara Pugliesi   +2 more
wiley   +1 more source

Development and Validation of a Method for the Quantification of an Alkaloid Fraction of Himatanthus lancifolius (Muell. Arg.) Woodson by Ultraviolet Spectroscopy

open access: yesJournal of Chemistry, Volume 2013, Issue 1, 2013., 2013
For the registration of phytomedicines and their availability to the population, National Agency of Sanitary Surveillance (ANVISA) establishes quality, security, and efficacy parameters, stipulating control requirements similar to those applied to synthetic medicines.
Patrícia M. S. S. Barros   +4 more
wiley   +1 more source

A Revision ofThenardiaH.B.K. (Apocynaceae, Apocynoideae) [PDF]

open access: yesLundellia, 1998
Abstract: A revision of the Mexican genus Thenardia H.B.K. is presented. Three species are here recognized: T. chiapensis J. K. Williams, T. floribunda H.B.K., and T. galeottiana Baillon. A complete account of synonymy, and typification is provided, as well as a key to species, photographs of types and pollen, and a distribution map of the species.
openaire   +1 more source

Phylogeny of the plant genus Pachypodium (Apocynaceae) [PDF]

open access: yes, 2013
Background. The genus Pachypodium contains 21 species of succulent, generally spinescent shrubs and trees found in southern Africa and Madagascar. Pachypodium has diversified mostly into arid and semi-arid habitats of Madagascar, and has been cited as an
Baldwin   +43 more
core   +1 more source

Anatomia foliar de espécies de Myrtaceae : contribuições à taxonomia e filogenia [PDF]

open access: yes, 2009
Trabalhos taxonômicos e filogenéticos têm utilizado informações anatômicas e para contribuir com estes estudos examinaram-se cortes paradérmicos e transversais da porção mediana foliar de Campomanesia adamantium (Camb.) O.
Bezerra, Kadja Milena Gomes   +5 more
core   +2 more sources

Studies in Macrosiphonia (Apocynaceae): Generic Recognition of Telosiphonia [PDF]

open access: yes, 1995
Woodson recognized two subgenera within Macrosiphonia (Apocynaceae: Apocynoideae), a South American subgenus Eumacrosiphonia, and a North American subgenus Telosiphonia each with five species.
Henrickson, James
core   +2 more sources

Estudios en las Apocynaceae neotropicales IX: Mandevilla antioquiana, sp. nov. y lectotipificación de Echites comosa

open access: yesAnales del Jardín Botánico de Madrid, 2005
Mandevilla antioquiana, a new species from the Antioquia Department, Colombia, is described and illustrated, and its taxonomic relationships are discussed. A lectotype is designated for Echites comosa Kuntze.
J. Francisco Morales
doaj   +1 more source

Una nueva combinación en el género Allotoonia (Apocynaceae, Apocynoideae, Echiteae)

open access: yesLankesteriana, 2015
La nueva combinación Allotoonia woodsoniana (Monac.) J.F. Morales & J.K. Williams reemplaza al nombre ilegítimo A. parviflora (Sessé & Moc.) J.F. Morales & J.K. Williams. 
Morales, Francisco, Williams, Justin
openaire   +3 more sources

A revised classification of the Apocynaceae s.l [PDF]

open access: yes, 2018
The Asclepiadaceae, as traditionally defined, have repeatedly been shown to be an apomorphic derivative of the Apocynaceae. It has often been recommended that the Asclepiadaceae be subsumed within the Apocynaceae in order to make the latter monophyletic.
Bruyns, Peter, Endress, Mary
core  

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