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Vinckier, S.

AuthorsH.-K. Moon, S. Vinckier, E.F. Smets, S. Huysmans
TitlePalynological evolutionary trends within the tribe Mentheae with special emphasis on subtribe Menthinae (Nepetoideae: Lamiaceae)
JournalPlant Systematics and Evolution
Volume275
Year2008
Pages93-108
ISSN1615-6110
KeywordsBireticulum; Mentheae; Menthinae; Nepetoideae; palynology; phylogeny; exine ornamentation
AbstractThe pollen morphology of subtribe Menthinae sensu Harley et al. [In: The families and genera of vascular plants VII. Flowering plants.dicotyledons: Lamiales (except Acanthaceae including Avicenniaceae). Springer, Berlin, pp 167-275, 2004] and two genera of uncertain subtribal affinities (Heterolamium and Melissa) are documented in order to complete our palynological overview of the tribe Mentheae. Menthinae pollen is small to medium in size (13-43 mu m), oblate to prolate in shape and mostly hexacolpate (sometimes pentacolpate). Perforate, microreticulate or bireticulate exine ornamentation types were observed. The exine ornamentation of Menthinae is systematically highly informative particularly at generic level. The exine stratification in all taxa studied is characterized by unbranched columellae. Orbicules are consistently absent in Menthinae. Our palynological data are interpreted in a phylogenetic context at tribal level in order to assess the systematic value of pollen characters and to evaluate the existing molecular phylogenies for this group. Pollen morphology suggests Heterolamium as a close relative of subtribe Nepetinae and supports the molecular affinity of Melissa to subtribe Salviinae.
Classification42.41 , 42.58
NoteDoi: 10.1007/s00606-008-0042-y
Document typearticle
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