Results 31 to 40 of about 867 (127)

Trypanocidal Activity of Oxoaporphine and Pyrimidine-β-Carboline Alkaloids from the Branches of Annona foetida Mart. (Annonaceae)

open access: yesMolecules, 2011
Phytochemical investigation of the branches of Annona foetida Mart. led to isolation from the CH2Cl2 extract of four alkaloids: Atherospermidine (1), described for the first time in this species, liriodenine (2), O-methylmoschatoline (3), and annomontine
Celso Vataru Nakamura   +8 more
doaj   +1 more source

Cytotoxic compounds from the leaves and stems of the endemic Thai plant Mitrephora sirikitiae

open access: yesPharmaceutical Biology, 2020
Context Mitrephora sirikitiae Weeras., Chalermglin & R.M.K. Saunders (Annonaceae) is a plant endemic to Thailand. Its constituents and their biological activities are unknown.
Natthinee Anantachoke   +8 more
doaj   +1 more source

New canopy legume species highlight liana gap sampling across Amazonian and Atlantic rain forests

open access: yesTAXON, Volume 75, Issue 4, August 2026.
Abstract Lianas are a key component of the Neotropical flora, accounting for 10% of angiosperm richness and playing important ecological roles. However, the canopy preference of some species often leads to their underrepresentation in herbarium collections, thereby exacerbating Linnaean, Darwinian, and Wallacean shortfalls. The papilionoid legume genus
Andrés Fonseca‐Cortés   +4 more
wiley   +1 more source

Trimerous magnoliid flowers with a unique set of floral and pollen traits from the Late Cretaceous of Southern Bohemia (Czech Republic)

open access: yesNew Phytologist, Volume 251, Issue 4, Page 2266-2283, August 2026.
Morphospace position and phylogenetic placements of Trimeriantha monopolyada. Summary Floral structure is a key aspect of angiosperm diversity. Recent research revealed that significant floral disparity was already present in the Cretaceous. However, our understanding of early floral diversity remains limited, as it is directly dependent on the fossil ...
Xieting Wu   +7 more
wiley   +1 more source

Attraction of nocturnal scarab beetles by unusual floral volatiles in a Banksia (Proteaceae) with functionally diverse pollinators

open access: yesPlant Biology, Volume 28, Issue 5, Page 1454-1466, August 2026.
Banksia attenuata (Proteaceae) attracts nocturnal scarab beetles with an unusual floral scent—the beetles pollinate the flower as they feed on pollen and nectar and mate on the inflorescences. Abstract Pollination by beetles has evolved multiple times in flowering plants but with relatively few plant species adapted specifically to pollination by ...
S. K. Wawrzyczek   +8 more
wiley   +1 more source

New records of extinct Icacinaceae from Paleocene rainforests of northwestern South America

open access: yesAmerican Journal of Botany, Volume 113, Issue 7, July 2026.
Abstract Premise This study describes three new records of Icacinaceae—Punctiuga bachue gen. et sp. nov., Palaeophytocrene paramoae sp. nov., and Goweria bacatana sp. nov. from the Paleocene (Selandian–Thanetian) Bogotá Formation in Colombia—improving understanding of the distribution and evolution of this family in the Neotropics.
Laura M. Puente‐Santos   +3 more
wiley   +1 more source

Balancing tracks and trees: Assessing railroad impact on Brazilian biodiversity

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1345-1356, July 2026.
The Brazilian West–East Integration Railway (FIOL) aims to boost the national economy by improving commodity transport; however, it crosses three of Brazil's most biodiverse and fragile regions: the Caatinga, Cerrado and Atlantic Forest. Using digitised plant records and land‐use analyses, our study reveals significant vegetation loss within the ...
Ana Luiza Silva Rocha   +3 more
wiley   +1 more source

Dispersal and in Situ Speciation as Contributors to Plant Diversity in the Chocó Region: Insights From Inga Mill. (Leguminosae)

open access: yesJournal of Biogeography, Volume 53, Issue 7, July 2026.
ABSTRACT Aim To investigate the historical processes underlying the assembly of the flora of the Chocó region, with a focus on the relative contributions of dispersal and in situ speciation. Using Inga (Leguminosae) as a model lineage, we evaluate the origin and diversification of species present in the Chocó.
Kelly T. Bocanegra‐González   +9 more
wiley   +1 more source

GERMINAÇÃO DE SEMENTES DE ARATICUM: DOSES DE GA3 E PERÍODOS DE EMBEBIÇÃO

open access: yesColloquium Agrariae, 2018
Sementes de Annona crassiflora apresentam dormência morofofisiológica, e estudos de mecanismos que permitam a sua germinação, garantirão a sobrevivência da espécie. Objetivou-se verificar ação do ácido giberélico (AG3) em distintos períodos de imersão na
Jéssica Aparecida Freitas   +1 more
doaj  

Diversity of plant communities and leaf heavy metal content at Luiswishi copper/cobalt mineralization, Upper Katanga, Dem. Rep. Congo [PDF]

open access: yesBiotechnologie, Agronomie, Société et Environnement, 1999
The site has been visited in 1926 by Walter Robyns, but was never studied in detail despite its location near Lubumbashi and its differences from the famous site of the ""Mine de l'Etoile"".
Malaisse F., Ruelle S., Baker A.J.M.
doaj  

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