Labellum and gynostemium micromorphology in Polystachya (Orchidaceae)
نویسندگان
چکیده
منابع مشابه
Comparative labellar micromorphology of Zygopetalinae (Orchidaceae).
BACKGROUND AND AIMS Molecular evidence indicates that the Neotropical sub-tribe Zygopetalinae is sister to Maxillariinae. Most members of the latter sub-tribe have deceit pollination strategies, but some species produce rewards such as nectar, pseudopollen, resin and wax, and are pollinated by a range of pollinators that include stingless bees (Meliponini), wasps and hummingbirds. By contrast, ...
متن کاملLabellar micromorphology of Bifrenariinae Dressler (Orchidaceae).
BACKGROUND AND AIMS The two closely related subtribes Bifrenariinae Dressler and Maxillariinae Benth. are easily distinguished on morphological grounds. Recently, however, molecular techniques have supported the inclusion of Bifrenariinae within a more broadly defined Maxillariinae. The present paper describes the diverse labellar micromorphology found amongst representatives of Bifrenariinae (...
متن کاملSeed micromorphology of Orchis Tourn. ex L. (Orchidaceae) and allied genera growing in Edirne province, Turkey
In this study, the seed micromorphologies of eight taxa of Anacamptis, Neotinea and Orchis growing around Edirne province (Turkey) were investigated using light microscopy and scanning electron microscopy (SEM). Slides prepared with glycerin jelly were used for measurements under the light microscope and fine details of seed testae characteristics were observed with SEM. Seeds of the investigat...
متن کاملModulations in seed micromorphology reveal signature of adaptive species-diversification in Dendrobium (Orchidaceae)
During speciation in flowering plants, many morphological characters were evolved in response to continuous selection pressure. Such characters are largely governed by genetic changes or get modulated according to ecological adaptations. To explore the potential of latter, a novel comparative analysis of seed micromorphology and ultrastructure was performed in twenty species in the genus Dendro...
متن کاملExine micromorphology of Orchidinae (Orchidoideae, Orchidaceae): phylogenetic constraints or ecological influences?
BACKGROUND AND AIMS Pollen characters have been widely used in defining evolutionary trends in orchids. In recent years, information on pollination biology and phylogenetic patterns within Orchidinae has become available. Hence, the aim of the presented work is to re-evaluate exine micromorphology of Orchidinae in light of recent phylogenetic studies and to test whether pollen micromorphology s...
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ژورنال
عنوان ژورنال: Plant Systematics and Evolution
سال: 2020
ISSN: 0378-2697,1615-6110
DOI: 10.1007/s00606-020-01724-1