Results 91 to 100 of about 920 (188)

Hiding in plain sight: accounting for rate heterogeneity in trait evolution models [PDF]

open access: yes, 2022
Within the last four decades, phylogenetic comparative methods have become the defacto method of analysis for comparative biologists. The availability of high-quality comparative datasets has been matched by an explosion of possible phylogenetic models ...
Boyko, James
core   +1 more source

Deep divergences in the coffee family and the systematic position of Acranthera [PDF]

open access: yes, 2018
Despite extensive efforts, there are unresolved questions on evolutionary relationships in the angiosperm family Rubiaceae. Here, information from six loci and 149 Rubiaceae taxa provide new insights. Acranthera and Coptosapelta are strongly supported as
Bremer, Birgitta   +4 more
core  

Pharmacognostic Investigation of Leaves of Mitracarpus vilosus (S.W.) D.C [PDF]

open access: yes, 2011
Pharmacognostic investigation on fresh, powdered and anatomical sections of leaf of Mitracarpus vilosus (S.W) D.C was carried out to determine its macromorphological, micromorphological and chemomicromorphological profiles.
Ibrahim, JA   +4 more
core   +2 more sources

Theligonum cynocrambe: Developmental morphology of a peculiar rubiaceous herb [PDF]

open access: yes, 2018
The annual Mediterranean herbTheligonum cynocrambe shows a peculiar combination of morphological characters, e.g., switch from decussate to spiral phyllotaxis with 90-100° divergence, combined with a change from interpetiolar to lateral stipules ...
Decraene, Louis   +3 more
core  

RUBIACEAE: ASPECTOS ECOLÓGICOS E REPRODUTIVOS [PDF]

open access: yes, 2014
Rubiaceae é uma das maiores famílias de dicotiledôneas de distribuição cosmopolita, abrange cerca de 12000 espécies e 650 gêneros, ocupa o quarto lugar em diversidade entre as angiospermas e é encontrada nos diversos ecossistemas brasileiros.
Mendonça, Ana Cleide Alcântara Morais   +3 more
core   +1 more source

Atividade citotóxica e antitumoral do extrato bruto etanólico de Spermacose poaya A. Saint-Hilaire (Rubiacee) em células normais e tumorais in vitro

open access: yesRevista de Biologia Neotropical, 2011
Spermacoce poaya é uma espécie pertencente à família Rubiaceae, tribo Spermacoceae, gênero Borreria, popularmente conhecida no Brasil como poaia-do-campo, poaia-rasteira e poaia-do-arador.
Francyelli Mariana dos Santos Mello   +6 more
doaj   +1 more source

Rubiaceae Juss. of Parque Estadual das Várzeas do Rio Ivinhema, Mato Grosso do Sul State, Brazil [PDF]

open access: yes, 2015
This study aimed to identify genera and species of Rubiaceae occurring in the Parque Estadual das Várzeas do Rio Ivinhema, located in the Paraná river basin, between the coordinates 22K 0226719 UTM 7463768.
Kinoshita, Luiza Sumiko   +1 more
core   +1 more source

Flora das cangas da Serra dos Carajás, Pará, Brasil: Rubiaceae

open access: yesRodriguésia
Resumo Este estudo compreende as espécies de Rubiaceae que ocorrem sobre canga na Serra dos Carajás, estado do Pará, Brasil, incluindo chaves de identificação, descrições detalhadas, ilustrações e comentários morfológicos das espécies, bem como a ...
Daniela C. Zappi   +3 more
doaj   +1 more source

Expanding the distribution of Tapanhuacanga campinorum (K.Krause) P.L.R.Moraes (Rubiaceae, Rubioideae) to central-western Brazil: the first record for the State of Mato Grosso, in the Parque Estadual do Cristalino [PDF]

open access: yesHoehnea
We report the occurrence of Tapanhuacanga campinorum in the Parque Estadual do Cristalino, in the State of Mato Grosso, Central-West Brazil. This represents the first record of the genus in this State and the species in this region of the country, since ...
João Afonso Martins do Carmo   +3 more
doaj   +1 more source

Identidad taxonómica de Diodia angustata (Rubiaceae) y su transferencia a Planaltina

open access: yesRodriguésia
Resumen Como parte de los estudios del género Diodia en América, se presenta aquí una discusión de la identidad taxonómica de Diodia angustata. En base al estudio de colecciones recientes y materiales originales, se propone transferir la especie al ...
Andrea A. Cabaña Fader   +2 more
doaj   +1 more source

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