Results 41 to 50 of about 521 (165)

Fruit set of distylous Psychotria carthagenensis Jacq. (Rubiaceae) mediated by Apis mellifera (Apidae) and species of Augochloropsis (Halictidae)

Acta Botânica Brasílica, 2015
Heterostyly is a floral polymorphism consisting in the presence of two morphs in the population that differ reciprocally in the position of their sexual organs.
Rogério Rodrigues Faria, Andréa Cardoso Araujo   +1 more
doaj   +1 more source

SOME ASPECTS OF HETEROSTYLY [PDF]

New Phytologist, 1975
SUMMARYIt is suggested that the functional significance of each di/trimorphic structure in heterostyled flowers should be considered separately. The origin of the morphological and physiological components of heterostyly is discussed; it is suggested that the physiological incompatibility arose first and created conditions favouring selection of ...
openaire   +1 more source

Dispersal and delimitation: Phylogenomics of Connaraceae prompts revised generic delimitation in Cnestideae and reveals global biogeographic patterns

TAXON, Volume 75, Issue 2, April 2026.
Abstract The tempo and mode of assembly of the world's most diverse, tropical floras remain poorly known. Evolutionary relationships within pantropical plant clades such as Connaraceae (Oxalidales, ca. 220 species) offer an opportunity to address this issue.
Serafin J.R. Streiff, Jurriaan M. de Vos
wiley   +1 more source

Pollen morphology and phylogenetic relationship of 14 Oxalis species

Guangxi Zhiwu
Most Oxalis are highly ornamentally valuable, but their taxonomy is difficult, which greatly limits the landscape application of this genus. The pollen morphology and exine ornamentation of 14 species of the Oxalis were observed using scanning electron ...
CHEN Shengyu, TANG Xiaoyun, XIAO Yun, HAN Ru, ZHAI Junwen, WU Shasha   +5 more
doaj   +1 more source

Evolution of distyly breakdown in Palicoureeae Robbr. & Manen and Psychotrieae Cham. & Schltdl. (Rubiaceae)

Acta Botânica Brasílica, 2022
Distyly is a floral polymorphism with reciprocal placement of male and female structures, heteromorphic self-incompatibility, and other ancillary traits. However, breeding system breakdowns and loss of polymorphism are common.
Ebenézer B. Rodrigues, Hélder Consolaro, Rocio Pérez-Barrales, Paulo Eugênio Oliveira   +3 more
doaj   +1 more source

Psychotria caraballoensis (Rubiaceae), a new species from northern Luzon, Philippines

Nordic Journal of Botany, Volume 2026, Issue 2, February 2026.
In this paper, we describe and illustrate Psychotria caraballoensis, a new endemic species from the Caraballo Mountain Range, Luzon, Philippines. It is allied to the Subalpina species group sensu Sohmer and Davis (2007), and resembles Psychotria sohotonensis.
Jenifer D. Pajarillaga, Jorge Anton D. Ordas, Eiana Joshier A. Odulio, Propa Joy S. Venturina, Cecilia B. Moran   +4 more
wiley   +1 more source

A pan‐European citizen science study shows population size, climate and land use are related to biased morph ratios in the heterostylous plant Primula veris

Journal of Ecology, Volume 114, Issue 1, January 2026.
A large‐scale citizen science study involving thousands of cowslip (Primula veris) observations from all over Europe revealed an unexpected prevalence of S‐morphs over L‐morphs, which was influenced by climatic as well as land use factors. Furthermore, general morph ratios were often unbalanced with the strongest shifts occurring in smaller populations.
Tsipe Aavik, Triin Reitalu, Marianne Kivastik, Iris Reinula, Sabrina Träger, Evelyn Uuemaa, Marta Barberis, Arjen Biere, Sílvia Castro, Sara A. O. Cousins, Anikó Csecserits, Eleftherios Dariotis, Živa Fišer, Grzegorz Grzejszczak, Cuong Nguyen Huu, Kertu Hool, Hans Jacquemyn, Margaux Julien, Marcin Klisz, Alexander Kmoch, Nikos Krigas, Attila Lengyel, Michael Lenhard, Desalew M. Moges, Zuzana Münzbergová, Ülo Niinemets, Baudewijn Odé, Hana Pánková, Meelis Pärtel, Ricarda Pätsch, Theodora Petanidou, Jan Plue, Radosław Puchałka, Froukje Rienks, Ioulietta Samartza, Julie K. Sheard, Bojana Stojanova, Joachim P. Töpper, Georgios Tsoktouridis, Spas Uzunov, Martin Zobel   +40 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)

Acta 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, Isabel Cristina Machado   +1 more
doaj   +1 more source

Cleomaceae: diversity and potential of a model family for studies on the evolution of photosynthesis

Plant Biology, Volume 28, Issue 1, Page 6-17, January 2026.
The Cleomaceae family integrates floral diversity, physiological plasticity, and the evolution of C4 photosynthesis, serving as an important model to investigate plant adaptation and evolutionary innovation. Abstract Understanding the physiological and molecular mechanisms by which plants adapt to environmental factors is essential for improving crop ...
P. Falquetto‐Gomes, D. F. Parma, J. Souza‐Isabel, W. E. B. Barrios, A. P. M. Weber, W. L. Araújo, A. Nunes‐Nesi   +6 more
wiley   +1 more source

Flower morphology, nectar features, and hummingbird visitation to Palicourea crocea (Rubiaceae) in the Upper Paraná River floodplain, Brazil

Anais da Academia Brasileira de Ciências, 2006
We investigated flower morphology, nectar features, and hummingbird visitation to Palicourea crocea (Rubiaceae), a common ornithophilous shrub found in the riparian forest understory in the Upper Paraná River floodplain, Brazil. Flowers are distylous and
Luciana B. Mendonça, Luiz dos Anjos
doaj   +1 more source