Results 81 to 90 of about 13,769 (299)

Levantamento preliminar de Psychotria L. (Rubiaceae) no estado do Pará. [PDF]

open access: yes, 2011
Realizou-se, no período de outubro/2010 a janeiro/2011, o levantamento dos táxons de Psychotria (Rubiaceae) ocorrentes no Estado do Pará. Este estudo foi baseado no acervo do Herbário IAN da Embrapa Amazônia Oriental, o qual conta com suas coleções ...
MARGALHO, L. F.   +2 more
core  

Disentangling the Evolutionary History of the Woody Species in Earth's Most Diverse Tropical Savanna

open access: yesJournal of Biogeography, Volume 52, Issue 8, August 2025.
ABSTRACT Aim We investigate the evolutionary structure of vegetation assemblages in the Cerrado Domain, the main extent of savanna in the American Tropics, a biodiversity hotspot, to understand the role of ecological and geographical factors in constraining plant diversification and shaping biogeographic patterns across this complex mosaic of ...
Vanessa Pontara   +5 more
wiley   +1 more source

Biologia da polinização e sistema reprodutivo de Psychotria barbiflora DC. (Rubiaceae) Pollination biology and breeding system of Psychotria barbiflora DC. (Rubiaceae)

open access: yesActa Botânica Brasílica, 2004
O estudo foi realizado no período de abril/1999 a setembro/2000, no Parque Estadual Dois Irmãos, Recife (PE) Brasil, um remanescente de floresta Atlântica.
Luciana Almeida Gomes Teixeira   +1 more
doaj   +1 more source

Variação funcional em espécies de Rubiaceae em um gradiente ambiental na Floresta Atlântica [PDF]

open access: yes, 2017
A coexistência de espécies relacionadas é um importante componente para o entendimento da diversidade e distribuição de plantas em florestas tropicais.
LEITE, F. T.
core  

Introduction à la végétation, à la flore et aux noms vernaculaires de l'île de Pentecôte (Vanuatu) [PDF]

open access: yes, 1983
The authors bring here all the constituents of an ethnobotanical and ethnolinguistic study of the native and introduced plants of Pentecost Island (Vanuatu).Les auteurs apportent ici tous les éléments d'une étude ethnobotanique et ethnolin- guistique des
Cabalion, Pierre, Morat, Philippe
core   +1 more source

Mountain colonization precedes shifts away from bee pollination in Melastomataceae

open access: yesNew Phytologist, Volume 247, Issue 3, Page 1474-1492, August 2025.
Summary Shifts among different groups of pollinators are central in the evolution of flowering plants, yet mechanisms underlying pollinator shifts remain unclear. Environment‐induced reduction in pollinator availability and hence efficiency may destabilize ancestral plant–pollinator interactions and trigger shifts to new, more efficient pollinators ...
Constantin Kopper   +2 more
wiley   +1 more source

Leaf nodule endosymbiotic Burkholderia confer targeted allelopathy to their Psychotria hosts

open access: yesScientific Reports, 2021
After a century of investigations, the function of the obligate betaproteobacterial endosymbionts accommodated in leaf nodules of tropical Rubiaceae remained enigmatic. We report that the α-d-glucose analogue (+)-streptol, systemically supplied by mature
Antri Georgiou   +7 more
doaj   +1 more source

Intraspecific and intra‐individual chemodiversity and phenotypic integration of terpenes across plant parts and development stages in an aromatic plant

open access: yesPlant Biology, Volume 27, Issue 5, Page 637-650, August 2025.
The terpene composition and chemodiversity of Tanacetum vulgare differ intraspecifically on a spatial and temporal scale, whereby the differences largely depend on the investigated component of chemodiversity. Abstract Some plant species produce an extraordinary diversity of specialized metabolites.
D. Ziaja, C. Müller
wiley   +1 more source

Potential bird dispersers of Psychotria in a area of Atlantic forest on Ilha Grande, RJ, Southeastern Brazil: a biochemical analysis of the fruits

open access: yesBrazilian Journal of Biology
The present study assessed the fruiting pattern, bird foraging behavior, and sugar content of ripe fruits of two sympatric species of Rubiaceae (Psychotria brasiliensis and P. nuda).
E. M. Almeida   +3 more
doaj   +1 more source

Exploring the Therapeutic Effects of Psychedelics Administered to Military Veterans in Naturalistic Retreat Settings

open access: yesBrain and Behavior, Volume 15, Issue 7, July 2025.
Military veterans experience higher rates of mental health conditions such as stress disorder (PTSD) and depression, and often face challenges rejoining civilian life after deployment. This study investigated whether attending a communal retreat where they received a psychedelic substance improved the mental health and civilian reintegration of 58 ...
Megan Calnan   +8 more
wiley   +1 more source

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