Results 71 to 80 of about 5,803 (221)

Hemisyncarpy and appendicular nectary approached by floral ontogeny of Mandevilla velame (A. St.-Hil.) Pichon, Apocynoideae [PDF]

open access: yes, 2008
Pichon é um subarbusto com peculiar indumento albo-lanoso e flores vistosas brancas. Objetivando contribuir para o conhecimento morfológico desta espécie, estádios de desenvolvimento de suas flores foram documentados em microscopia eletrônica de ...
Castro, Marília de Moraes   +2 more
core   +3 more sources

The pollination ecology and mouthpart morphology of a pollen‐feeding fly Incurviseta cf. maculifrons (Diptera: Lauxaniidae) in the Australian Alpine

open access: yesPhysiological Entomology, Volume 51, Issue 2, Page 214-225, June 2026.
The Lauxaniid fly Incurviseta cf. maculifrons (Malloch, 1925) is a locally abundant but poorly understood flower visitor in the Australian Alpine. We describe the flower visitation, pollen transport, pollen diet and mouthpart morphology of I. cf. maculifrons using field observations, pollen analyses and scanning electron microscopy. I. cf.
Tomas Mitchell‐Storey   +3 more
wiley   +1 more source

Flowering biology and structure of floral nectaries in Galanthus nivalis L.

open access: yesActa Societatis Botanicorum Poloniae, 2016
In Poland Galanthus nivalis L. is partially protected. The flowers of this species are one of the first sources of nectar and pollen for insects from February to April. The aim of this study was to present the flowering biology as well as the topography,
Elżbieta Weryszko-Chmielewska   +1 more
doaj   +1 more source

Inga pitmanii (Fabaceae), a New Species from Madre de Dios, Peru [PDF]

open access: yes, 2011
Inga pitmanii K. G. Dexter & T. D. Penn., a new species of Inga Mill. from Madre de Dios, Peru, is described for the Fabaceae (Mimosoideae). Morphologically it is closest to I. chartacea Poepp.
Dexter, Kyle G, Pennington, Terence D
core   +1 more source

Mutualism in disguise? Isotopic evidence for nutrient transfer from a carnivorous pitcher plant to its insect prey

open access: yesEcology, Volume 107, Issue 5, May 2026.
Abstract Consumer–resource interactions can shift from exploitative to mutualistic when reciprocal benefits such as nutrient exchange offset the costs of damage or mortality, though these benefits are often difficult to detect. Carnivorous pitcher plants are typically viewed as exploiters of arthropod prey, yet most visitors escape capture and may gain
David W. Armitage   +2 more
wiley   +1 more source

Structure of the cuniculus nectary in Brassavola flagellaris Barb. Rodr. (Laeliinae Benth., Orchidaceae)

open access: yesActa Agrobotanica, 2012
To date, the structure of the cuniculus nectary has not been studied in detail. Furthermore, the secretory mechanism of such nectaries has not been investigated.
Małgorzata Stpiczyńska   +2 more
doaj   +1 more source

Floral structure and development in the monoecious palm Gaussia attenuata (Arecaceae; Arecoideae) [PDF]

open access: yes, 2017
Background and Aims Sexual dimorphism, at both the flower and plant level, is widespread in the palm family (Arecaceae), in contrast to the situation in angiosperms as a whole.
Castaño, Felipe   +6 more
core  

Rediscovery of Passiflora clypeophylla (subgenus Decaloba): a highly threatened and narrow endemic species found within a karstic canyon in Guatemala

open access: yesNordic Journal of Botany, Volume 2026, Issue 5, May 2026.
Passiflora clypeophylla, an endemic species to the Guatemalan karstic forests last seen in 1889 and deemed extinct, was rediscovered in the Department of Alta Verapaz, east of Cobán. The species was known only from a single specimen hailed from the type locality, Rubel Cruz, where it has been found again. An additional location has been identified in a
J.R. Kuethe   +3 more
wiley   +1 more source

A reduced, yet functional, nectary disk integrates a complex system of floral nectar secretion in the genus Zeyheria (Bignoniaceae)

open access: yesActa Botânica Brasílica
The genus Zeyheria (Bignoniaceae) comprises only two species, both of which have been described as possessing a reduced and non-functional nectary disk.
Silvia Rodrigues Machado   +2 more
doaj   +1 more source

Mechanical defenses of plant extrafloral nectaries against herbivory

open access: yesCommunicative & Integrative Biology, 2016
Extrafloral nectaries play an important role in plant defense against herbivores by providing nectar rewards that attract ants and other carnivorous insects.
Moshe Gish   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy