Pollen Morphology of Polygonatae and Its Systematic Significance

The pollen morphology of 54 species and one variety of seven genera in Polygonatae including Clintonia, Disporopsis, Disporum, Maianthemum, Polygonatum, Smilacina and Streptopus was observed and studied in detail; of these, nine species were reported for the first time. Our results showed that the s...

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Bibliographic Details
Published in:Palynology 2018-04, Vol.42 (2), p.255-272
Main Authors: Wang, Liu, Gu, Lei, Zhao, Chunhai, Liu, Jiaxi
Format: Article
Language:English
Subjects:
Angiospermae
Asia
China
Clintonia
Commonwealth of Independent States
Denmark
Disporopsis
Disporum
electron microscopy data
Europe
Far East
Genera
Granulation
living taxa
Maianthemum
miospores
Morphology
Ornamentation
Paleobotany
palynology
palynomorphs
Plantae
Pollen
pollen morphology
Polygonatae
Polygonatum
Russian Federation
Scandinavia
SEM data
Smilacina
Spermatophyta
Streptopus
systematics
taxonomy
United States
Western Europe
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Summary:The pollen morphology of 54 species and one variety of seven genera in Polygonatae including Clintonia, Disporopsis, Disporum, Maianthemum, Polygonatum, Smilacina and Streptopus was observed and studied in detail; of these, nine species were reported for the first time. Our results showed that the surface ornamentation of pollen grains of the studied materials could be divided into seven types, namely gemmate, granulate-foveolate, perforate, reticulate, rugulate, rugulate-perforate and verrucate. In line with previous studies, we believe that (i) Smilacina ginfushanicum should be classified into the genus Heteropolygonatum rather than the genus Smilacina; (ii) Polygonatum should be divided into section Polygonatum and section Verticillata; (iii) Smilacina and Maianthemum should be combined as one genus, i.e. Maianthemum sensu lato; and (iv) Clintonia, Disporum and Streptopus should be separated from the tribe Polygonatae.
ISSN:0191-6122
1558-9188
DOI:10.1080/01916122.2017.1339217