A new striking and critically endangered species of Nasa (Loasaceae, Cornales) from North Peru [PDF]
Nasa angeldiazioides sp. nov. is described and illustrated. The species is restricted to two forest remnants on the western slope of the northern Peruvian Andes (Dept. Lambayeque) where it is found in the undergrowth of primary forest.
Acuña Castillo, Rafael +4 more
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THE GIANT LOBELIAS: PACHYCAULY, BIOGEOGRAPHY, ORNITHOPHILY AND CONTINENTAL DRIFT [PDF]
SUMMARYRecent revisions of the Asian, Jamaican and African species of pachycaul lobelias raise a number of evolutionary and biogeographical problems. Discussion of the apparent forest pachycaul ancestry of the African species is applied to problems of biogeography, pollination and Continental Drift. The available facts are accommodated in an hypothesis,
openaire +1 more source
Floral attributes, ornithophily and reproductive success of Palicourea longepedunculata (Rubiaceae), a distylous shrub in southeastern Brazil [PDF]
Os atributos florais, a ornitofilia e o sucesso reprodutivo de Palicourea longepedunculata Gardner foram estudados em fragmento de Floresta Atlântica do sudeste do Brasil. Essa especie e um arbusto distilico que ocorre em sub-bosque umido de florestas.
Celice Alexandre Silva +2 more
openaire +1 more source
Fine-scale spatial genetic structure in the frankincense tree Boswellia papyrifera (Del.) Hochst. and implications for conservation [PDF]
The fine-scale genetic structure and how it varies between generations depends on the spatial scale of gene dispersal and other fundamental aspects of species’ biology, such as the mating system.
Addisalem, A. +4 more
core +4 more sources
Historical development of ornithophily in the western North American flora. [PDF]
The 129 ornithophilous plant species in western North America have floristic affinities with one or the other of four geofloras: the Arcto-Tertiary flora (101 species), Madro-Tertiary flora (19 species), Madrean-Tethyan flora (8 species), and Neotropical flora (1 species).
openaire +2 more sources
Ornithophily for the nonspecialist: Differential pollination efficiency of the Macaronesian island paleoendemic Navaea phoenicea (Malvaceae) by generalist passerines [PDF]
PREMISE OF THE STUDY:A bird pollination syndrome exists in the Canary Islands archipelago across independent plant lineages despite the absence of specialist birds. The pollination efficiency of current floral visitors remains unknown for many plant species despite this being a fundamental factor in testing hypotheses about the origin of the syndrome ...
Fernández de Castro, Alejandro G. +2 more
openaire +3 more sources
A comprehensive census of a hectare of cerrado s.s. in southeastern Brazil, a small-tree and scrub woodland physiognomy, allowed the evaluation of whether pollination and dispersal modes are correlated with the stratification of the vegetation and if so,
Gerhard Gottsberger +1 more
doaj +1 more source
Comparison of selected methods for the retrieval of neologisms [PDF]
The paper discusses and compares several semi-automatic methods used to extract neologisms from linguistic corpora. All the methods are based on the concept of discriminants, or textual features (both lexis and punctuation), that either precede (lexical ...
Paryzek, Piotr
core +2 more sources
Plant-hummingbird interactions and temporal nectar availability in a arestinga from Brazil [PDF]
Hummingbirds are the most important and specialized group of pollinating birds in the Neotropics and their interactions with plants are key components to many communities.
Alves, Maria Alice S. +3 more
core +3 more sources
Os ambientes abertos de Cerrado têm sido considerados ambientes marginais ou complementares para beija-flores, apesar do registro de considerável número de espécies deste grupo de visitantes florais.
Adriana Oliveira Machado +1 more
doaj +1 more source

