@article {Moon:2008p1109,
	title = {A search for phylogenetically informative pollen characters in the subtribe Salviinae (Mentheae : Lamiaceae)},
	journal = {International Journal of Plant Sciences},
	volume = {169},
	number = {3},
	year = {2008},
	month = {Jan},
	pages = {455{\textendash}471},
	abstract = {The pollen morphology and ultrastructure of the subtribe Salviinae were investigated with light, scanning electron, and transmission electron microscopy. In addition, cladistic analyses of the obtained morphological data, supplemented with rbcL data from GenBank, were conducted in order to assess the phylogenetic signal of palynological characters. Salviinae pollen is small to large, oblate to prolate in shape, with a circular to slightly elliptic amb, and mostly hexacolpate. Perovskia abrotanoides appears to be distylous and shows a significant pollen dimorphism between pin and thrum flowers. The sexine ornamentation of the genera Lepechinia and Chaunostoma is perforate, while the ornamentation of other genera is bireticulate. Perovskia expresses a unique type of sexine ornamentation. The sexine ornamentation variation in Salvia has systematic importance but only partly corresponds with current phylogenetic hypotheses. Unbranched columellae and a continuous, granular endexine are hypothesized to be a symplesiomorphic condition in the tribe Mentheae. Our combined phylogenetic analyses show that the addition of palynological characters contributes to improved resolution and also increases bootstrap support values in comparison with molecular phylogenetic analyses.},
	keywords = {Distyly, Grains, Labiatae, Morphology, Orbicules, Palynology, Perovskia, Phylogeny, Pollen Dimorphism, Salviinae, Systematics},
	doi = {10.1086/526463},
	url = {http://www.journals.uchicago.edu/doi/abs/10.1086/526463},
	author = {Hye-Kyoung Moon and Stefan Vinckier and Jay B Walker and Erik Smets and Suzy Huysmans}
}
@booklet {Walker:2007p1114,
	title = {Staminal evolution in the genus Salvia (Lamiaceae): Molecular phylogenetic evidence for multiple origins of the staminal lever},
	howpublished = {Annals of Botany},
	volume = {100},
	number = {2},
	year = {2007},
	month = {Jan},
	pages = {375{\textendash}391},
	abstract = {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 various lineages of Salvia and related genera is characterized and an evolutionary interpretation of staminal variation within the tribe Mentheae is presented.Methods Two molecular analyses are presented in order to investigate phylogenetic relationships in the tribe Mentheae and the genus Salvia. The first presents a tribal survey of the Mentheae and the second concentrates on Salvia and related genera. Schematic sketches are presented for the staminal morphology of each major lineage of Salvia and related genera.Key Results These analyses suggest an independent origin of the staminal elongate connective on at least three different occasions within the tribe Mentheae, each time with a distinct morphology. Each independent origin of the lever mechanism shows a similar progression of staminal change from slight elongation of the connective tissue separating two fertile thecae to abortion of the posterior thecae and fusion of adjacent posterior thecae. A monophyletic lineage within the Mentheae is characterized consisting of the genera Lepechinia, Melissa, Salvia, Dorystaechas, Meriandra, Zhumeria, Perovskia and Rosmarinus.Conclusions Based on these results the following are characterized: (1) the independent origin of the staminal lever mechanism on at least three different occasions in Salvia, (2) that Salvia is clearly polyphyletic, with five other genera intercalated within it, and (3) staminal evolution has proceeded in different ways in each of the three lineages of Salvia but has resulted in remarkably similar staminal morphologies.},
	keywords = {Diversification, Dorystaechas, Floral Evolution, Floral Nectar Spurs, Incongruence, Key Innovation, Labiatae, Lepechinia, Melissa, Mentheae, Meriandra, Perovskia, Radiation, Rosmarinus, Salvia, Sequences, Staminal Morphology, Zhumeria},
	doi = {10.1093/aob/mcl176},
	url = {http://aob.oxfordjournals.org/cgi/content/abstract/100/2/375},
	author = {Jay B Walker and Kenneth J Sytsma}
}
@article {Walker:2007p7989,
	title = {Staminal evolution in the genus Salvia (Lamiaceae): molecular phylogenetic evidence for multiple origins of the staminal lever},
	journal = {Annals of Botany},
	volume = {100},
	number = {2},
	year = {2007},
	month = {Aug},
	pages = {375{\textendash}91},
	abstract = {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 various lineages of Salvia and related genera is characterized and an evolutionary interpretation of staminal variation within the tribe Mentheae is presented. METHODS: Two molecular analyses are presented in order to investigate phylogenetic relationships in the tribe Mentheae and the genus Salvia. The first presents a tribal survey of the Mentheae and the second concentrates on Salvia and related genera. Schematic sketches are presented for the staminal morphology of each major lineage of Salvia and related genera. KEY RESULTS: These analyses suggest an independent origin of the staminal elongate connective on at least three different occasions within the tribe Mentheae, each time with a distinct morphology. Each independent origin of the lever mechanism shows a similar progression of staminal change from slight elongation of the connective tissue separating two fertile thecae to abortion of the posterior thecae and fusion of adjacent posterior thecae. A monophyletic lineage within the Mentheae is characterized consisting of the genera Lepechinia, Melissa, Salvia, Dorystaechas, Meriandra, Zhumeria, Perovskia and Rosmarinus. CONCLUSIONS: Based on these results the following are characterized: (1) the independent origin of the staminal lever mechanism on at least three different occasions in Salvia, (2) that Salvia is clearly polyphyletic, with five other genera intercalated within it, and (3) staminal evolution has proceeded in different ways in each of the three lineages of Salvia but has resulted in remarkably similar staminal morphologies.},
	keywords = {Evolution: Molecular, Flowers, Phylogeny, Salvia},
	doi = {10.1093/aob/mcl176},
	url = {http://aob.oxfordjournals.org/content/100/2/375.long},
	author = {Jay B Walker and Kenneth J Sytsma}
}
