Results 41 to 50 of about 2,096 (211)

Hechtia mixtecana sp. nov. (Hechtioideae; Bromeliaceae), from Oaxaca, Mexico

Nordic Journal of Botany, EarlyView.
Botanical explorations carried out in the state of Oaxaca, Mexico, led to the discovery of a new Bromeliaceae: Hechtia mixtecana,which is here described and illustrated. The new taxon is compared with the morphologically similar Hechtia fragilis, Hechtia lyman‐smithii, and Hechtia minuta.
Rodrigo Alejandro Hernández‐ Cárdenas, Adolfo Espejo‐ Serna, Ana Rosa López‐ Ferrari, Sofía Ana Lucrecia Lara‐ Godínez, Andrew Siekkinen   +4 more
wiley   +1 more source

Reproductive aspects in Ipomoea asarifolia (Desr.) Roem. & Schult. (Convolvulaceae) occurring in antropized caatinga area

Diversitas Journal, 2023
Morphometry is a mechanism used to measure the differences among species from the study of the relationship between size and shape, creating comparative references, and allowing proper identification.
Mayane Luiza Alves Nunes, Genésio José do Amaral Ramos, Charlane Moura da Silva, Camila Chagas Coreeia   +3 more
doaj   +1 more source

Structural stability of plant–pollinator interactions despite seasonal abundance of long‐tongued hawkmoths

Oikos, EarlyView.
Seasonal environmental cycles affect plant–pollinator interactions by altering plant phenology. Periods of low resource availability can filter pollinators and reduce the complexity of interaction networks, but the extent to which the functional morphology of pollinators influences such filtering remains unclear.
Ugo M. Diniz, Luis M. Primo, Francisco A. R. Santos, Isabel C. Machado   +3 more
wiley   +1 more source

Biologia reprodutiva de Cordiera macrophylla (K. Schum.) Kuntze (Rubiaceae), espécie dioica da região sudoeste do Estado de Mato Grosso, Brasil

Revista Ceres, 2015
RESUMO O gênero Cordiera (Rubiaceae) possui aproximadamente 25 espécies e ampla distribuição no Brasil. Seus representantes são árvores ou arbustos dioicos, com flores funcionalmente unissexuadas. Este estudo foi realizado em dois fragmentos de Floresta
Simone Santos de Oliveira Cobra, Franciele do Nascimento, Sabrina Aparecida Antoniazzi, Willian Krause, Celice Alexandre Silva   +4 more
doaj   +1 more source

BIOLOGIA FLORAL E REPRODUTIVA DE Agapanthus africanus (L.) HOFFMANNS (LILIACEAE)

Estudos de Biologia, 2005
Foi realizado o estudo de biologia floral e reprodutiva de Agapanthus africanus (L.) Hoffmanns (Liliaceae), uma planta exótica, muito utilizada como ornamental em nosso ambiente urbano. Foram realizadas observações de campo, no Campus Curitiba da PUCPR, procurando constatar os visitantes e o seu comportamento na flor, assim como testes de viabilidade ...
Diogo Maurízio Zen, Luiz Antônio Acra
openaire   +2 more sources

Floral resource diversity drives spatiotemporal variation in plant–pollinator network structure

Oikos, EarlyView.
Mechanisms underlying community assembly, including those related to species interactions, vary across space and time. Plant–pollinator networks exemplify these dynamics, where link rewiring and turnover mediate adaptations to environmental changes. Bees rely on diverse floral resources (e.g.
Caio S. Ballarin, Felipe W. Amorim, Blanca Arroyo‐ Correa, Pedro Jordano   +3 more
wiley   +1 more source

Floral morphology and pollen placement strategies of bat-pollinated flowers: a comparative analysis within a guild of chiropterophilous plants in a neotropical dry forest

Revista Chilena de Historia Natural
Background Synchronopatric plant species, coexisting and flowering simultaneously, often engage in intense competition for pollen deposition on shared pollinators.
Cristina Adriane de Souza Pontes, Isabel Cristina Machado, Arthur Domingos-Melo   +2 more
doaj   +1 more source

Is the pollination efficiency of long-lived orchid flowers affected by age?

Revista Ceres, 2015
The long-lived flowers of orchids increase the chances of pollination and thus the reproductive success of the species. However, a question arises: does the efficiency of pollination, expressed by fruit set, vary with the flower age?
Rúbia Santos Fonseca, Flávia Aparecida dos Santos, Milene Faria Vieira   +2 more
doaj   +1 more source

Biologia floral em moranga (Cucurbita maxima Duch. var. Exposição)

, 2007
Com o objetivo de se estudar a biologia floral em moranga (Cucurbita maxima), variedade Exposição, realizaram-se dois ensaios, utilizando-se 128 plantas, numa área de 2.000 m². A abertura e o murchamento das flores ocorreu, em média, às 6p5 e 13h52, respectivamente. Havia, em média, 2,26 flores masculinas para cada flor feminina.
Nicodemo, Daniel, Couto, Regina Helena Nogueira, Malheiros, Euclides Braga, Jong, David De   +3 more
openaire   +3 more sources

Floral trait similarity at the community‐level increases reproductive success suggesting facilitation through pollinator sharing

Oikos, EarlyView.
The ability of plants to attract pollinators is context‐dependent, influenced by floral traits, abundance, and resources from the plant community. Indirect interactions through shared pollinators, from competition to facilitation, may lead to varied reproductive outputs in plants, and the mechanisms behind these interactions remain to be fully ...
Marsal D. De Amorim, Pedro J. Bergamo, Elisa Thébault, Luís G. S. Perugini, Sabrina A. Lopes, André R. Rech, Pietro K. M. Maruyama   +6 more
wiley   +1 more source