Now showing items 21-30 of 57
Florae costaricensis subtribui Pleurothallidinis (Orchidaceae) prodromus II. Systematics of the Pleurothallis cardiothallis and P. phyllocardia Groups, and Other Related Groups of Pleurothallis with Large Vegetative Habit
We discuss a group of Pleurothallis species mostly characterized by plants relatively tall for the genus, with stems more than 20 cm long and fasciculate inflorescences produced above the leaf from a spathaceous, sometimes ...
Phylogenetic reassessment of Acianthera (Pleurothallidinae: Orchidaceae)
The phylogenetic relationships within the Acianthera affinity are re-evaluated using Bayesian analyses of nrITS and chloroplast matK sequence data. Emphasis is made on species from the Antilles, Central America and the ...
Pollination of Trichosalpinx (Orchidaceae: Pleurothallidinae) by biting midges (Diptera: Ceratopogonidae)
Pleurothallidinae (Epidendreae) are a megadiverse Neotropical orchid subtribe comprising > 5100 species, most of which are probably pollinated by Diptera. The role of pollinators as drivers of species diversity is largely ...
A new species of Trichosalpinx (Orchidaceae: Pleurothallidinae) from Costa Rica
Trichosalpinx sanctuarii, a new species of Orchidaceae, subtribe Pleurothallidinae, is described and illustrated. It most resembles T. ringens, from which it is distinguished in the text. The new species is endemic to Costa Rica.
How many species of Pleurothallidinae are there?
Subtribe Pleurothallidinae is possibly the most species-rich of all orchid groups. Nevertheless, they are a young group of plants in terms of scientific learning. The last three decades have been the most active with respect ...
Evolutionary diversification and historical biogeography of orchidaceae in Central America with emphasis on Costa Rica and Panama
In this thesis, I targeted the orchid genus Lepanthes, one of the six genera of angiosperms that surpasses 1,000 species in the Neotropics, as a study model to investigate the evolutionary processes that promoted species ...
Resolving relationships in an exceedingly young Neotropical orchid lineage using Genotyping-by-sequencing data
Poor morphological and molecular differentiation in recently diversified lineages is a widespread phenomenon in plants. Phylogenetic relationships within such species complexes are often difficult to resolve because of the ...
A new Muscarella from Tapanti National Park, Costa Rica
A new species of Muscarella from Costa Rica, is described and illustrated. Muscarella tapantiensis most resembles M. coeloglossa but differs in the longer pedicels (3-5 vs. 1-2 mm), the shorter (2.5-2.8 vs. 3.75 mm), connate ...
Genus-level taxonomical changes in the Lepanthes affinity (Orchidaceae: Pleurothallidinae)
We propose a new classification of the Lepanthes affinity based on previous studies and our ongoing phylogenetic re-evaluation of the Pleurothallidinae. Fourteen genera are recognized as belonging to the affinity. They are ...
Molecular clocks and archeogenomics of a late period egyptian date palm leaf reveal introgression from wild relatives and add timestamps on the domestication
The date palm, Phoenix dactylifera, has been a cornerstone of Middle Eastern and North African agriculture for millennia. It was first domesticated in the Persian Gulf, and its evolution appears to have been influenced by ...