Results 81 to 90 of about 8,376 (222)

Functional Diversity of Nectary Structure and Nectar Composition in the Genus Fritillaria (Liliaceae)

open access: yesFrontiers in Plant Science, 2018
Fritillaria is a genus consisting of 130 to 140 species of bulbous plants, native to temperate regions of the northern hemisphere. Generally viewed as an insect pollinated genus with the exception of two North American species, Fritillaria gentneri and F.
Katarzyna Roguz   +8 more
doaj   +1 more source

Passiflora kapiriensis (Passifloraceae), a new species from French Guiana [PDF]

open access: yes, 2016
Passiflora kapiriensis is a new Guianese species in the series Laurifoliae of subgenus Passiflora, found near Saint-Georges-de-l'Oyapock. The filaments of the fourth corona row are 1 cm long and oriented to the androgynophore, which is reminiscent of P ...
Coppens D'Eeckenbrugge, Geo, Rome, M.
core   +1 more source

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

Where is the reward? Floral nectaries in Aspidosperma australe flowers [PDF]

open access: yesRodriguésia
Nectaries are secretory structures that produce a solution rich in sugars, which are involved in animal-plant interactions. Such secretory structures can be externally distinguishable (recognizable), as in glands or discs, or not, as in some gynoecial ...
Dayanne Cristina Russi   +3 more
doaj   +1 more source

Diversity and evolution of a trait mediating ant-plant interactions: insights from extrafloral nectaries in Senna (Leguminosae) [PDF]

open access: yes, 2017
Background and Aims Plants display a wide range of traits that allow them to use animals for vital tasks. To attract and reward aggressive ants that protect developing leaves and flowers from consumers, many plants bear extrafloral nectaries (EFNs). EFNs
Bronstein, Judith L.   +4 more
core  

Leaf Micromorphology Aids Taxonomic Delineation within the Hypervariable Genus Metrosideros (Myrtaceae) on O\u27ahu

open access: yes, 2018
Variation in leaf micromorphology can aid delimitation of taxonomically difficult groups. The woody genus Metrosideros (Myrtaceae) dominates Hawai\u27i\u27s native forests and comprises striking, predominantly infraspecific, macromorphological variation,
Keating, Richard   +2 more
core   +1 more source

Taxonomic insights into Indian Rotala (Lythraceae) species with verticillate phyllotaxy

open access: yesNordic Journal of Botany, Volume 2026, Issue 5, May 2026.
In an effort to resolve taxonomic complexities among Indian Rotala species with verticillate phyllotaxy, this study provides an identification key, revised nomenclature, updated morphological descriptions including SEM studies of seed coat surfaces, detailed photoplates, and notes on phenology, ecology, and distribution.
Arikrishnan Parthiban   +2 more
wiley   +1 more source

Morpho-anatomical studies of the floral and extrafloral nectaries of Triumfetta rhomboidea (Malvaceae, Grewioideae) [PDF]

open access: yes, 2009
La morfo-anatomía de los nectarios florales y extraflorales tricomáticos de Triumfetta rhomboidea Jacq. se estudió con microscopio óptico y microscopio electrónico de barrido.
Avanza, Maria Mercedes   +3 more
core  

Sugar provisioning increases parasitoid numbers in agroecosystems but may not reduce pest densities: A meta‐analysis

open access: yesJournal of Applied Ecology, Volume 63, Issue 5, May 2026.
Our findings demonstrate that providing sugar sources reliably supports parasitoid populations and parasitism rate but does not systematically translate into improved pest suppression or yield gains. These results suggest that, for economic and practical reasons, sugar inputs at the edge of cultivated fields should be favoured.
Martin Luquet   +3 more
wiley   +1 more source

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