Functional implications of the staminal lever mechanism in Salvia cyclostegia (Lamiaceae).

Staminal evolution in the genus Salvia (Lamiaceae): molecular phylogenetic evidence for multiple origins of the staminal lever.

BACKGROUND AND AIMS The genus Salvia has traditionally included any member of the tribe Mentheae (Lamiaceae) with only two stamens and with each stamen expressing an elongate connective. The recent demonstration of the non-monophyly of the genus presents interesting implications for staminal evolution in the tribe Mentheae. In the context of a molecular phylogeny, the staminal morphology of the...

Floral diversity and pollen transfer mechanisms in bird-pollinated Salvia species.

BACKGROUND AND AIMS Bird-pollinated (ornithophilous) Salvia species (sages) transfer pollen either by means of a staminal lever mechanism or by immovable stamens. As the distribution of the two modes within the genus is not known, we present a survey of all ornithophilous sages. The main focus is given to floral diversity especially with respect to functional lever morphology. Thereby the hypot...

Optimization of the thread take-up lever mechanism in lockstitch sewing machine using the imperialistic competitive algorithm

Phylogenetics, biogeography, and staminal evolution in the tribe Mentheae (Lamiaceae).

PREMISE OF THE STUDY The mint family (Lamiaceae) is the sixth largest family of flowering plants, with the tribe Mentheae containing about a third of the species. We present a detailed perspective on the evolution of the tribe Mentheae based on a phylogenetic analysis of cpDNA and nrDNA that is the most comprehensive to date, a biogeographic set of analyses using a fossil-calibrated chronogram,...

Identification of flavonoids in leaves of seven wild growing Salvia L. (Lamiaceae) species from Iran

This study documents the flavonoid constituents of seven Salvia species in Iran namely S.atropatana Bunge, S. limbata C. A. Mey, S. sclarea L., S. ceratophylla L., S. multicaulis Vahl.,S. hydrangea Dc. ex Benth., and S. eremophila Boiss. The studied species were collected fromtheir natural habitats in Iran and were analyzed for their flavonoid constituents using twodimensionalthin layer chromat...