Topic
Spirotecoma
About: Spirotecoma is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 51 citations.
Papers
TL;DR: The most recent circumscription of Crescentieae, containing Amphitecna, Crescentia, and Parmentiera is supported by their phylogenetic results as mentioned in this paper, which implies the evolution of fleshy and indehiscent fruits from dry and dehiscent ones.
Abstract: The tribe Crescentieae includes Amphitecna (21 species), Crescentia (six species), and Parmentiera (10 species), three genera of understory trees with a center of diversity in Central America and a small number of species in the Antilles and northern South America. Species in Crescentieae are united by their fleshy, indehiscent fruit and cauliflorous, bat-pollinated flowers. To lay a foundation for examining morphological, ecological, and biogeographic patterns within the tribe, we inferred the phylogeny for Crescentieae using both chloroplast (ndhF, trnL-F) and nuclear markers (PepC, ITS). The most recent circumscription of Crescentieae, containing Amphitecna, Crescentia, and Parmentiera is supported by our phylogenetic results. Likewise, the sister relationship between Crescentieae and the Antillean-endemic Spirotecoma is also corroborated by our findings. This relationship implies the evolution of fleshy and indehiscent fruits from dry and dehiscent ones, as well as the evolution of bat pollination from insect pollination. Fruits and seeds from species in Crescentieae are consumed by humans, ungulates, birds, and fish.
4 citations
TL;DR: The phylogeny of Tabebuia presented here corresponds to the species groups established by Gentry, while at the same time highlighting the need for taxonomic revisions.
Abstract: Tabebuia is one of the most commonly encountered genera of Bignoniaceae in the neotropics. Previous research has suggested that this genus may be paraphyletic and contain the tribe Crescentieae. Molecular sequence data of the chloroplast trnL-F and ndhF regions were used to reconstruct the phylogeny of Tabebuia, Crescentieae and related genera. A previously unrecognized clade of Neotropical, arboreal Bignoniaceae characterized by palmately compound leaves was identified and is referred to as the Tabebuia alliance. Within this group, Tabebuia is confirmed to be paraphyletic, since it includes Crescentieae, Spirotecoma, and Ekmanianthe. The position of Zeyheria, Godmania, and Cybistax with relation to Tabebuia is equivocal. Sparattosperma is sister to the rest of the Tabebuia alliance. Spirotecoma is inferred to be sister to Crescentieae. The phylogeny of Tabebuia presented here corresponds to the species groups established by Gentry, while at the same time highlighting the need for taxonomic revisions. When considered on a biogeographic scale, the phylogeny indicates a minimum of four dispersal events from the mainland to the Greater Antilles.
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2007 | 1 |