SEM‐studies and general comments on pollen in tribe Mutisieae (Compositae) sensu Cabrera
作者:
Hans V. Hansen,
期刊:
Nordic Journal of Botany
(WILEY Available online 1991)
卷期:
Volume 10,
issue 6
页码: 607-623
ISSN:0107-055X
年代: 1991
DOI:10.1111/j.1756-1051.1991.tb02102.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Data based on SEM‐studies of about 70 genera in tribe Mutisieae (Compositae) sensu Cabrera plus a few other relevant genera are presented with a discussion of some pollen‐morphologic characters (exomorphology and TEM‐patterns). The phyloge‐netically important aspects are shown to relate to the shape of the pollen grains, the presence or absence of polar elevations, and to the TEM‐patterns. The circumscription of tribe Mutisieae s.str. (i.e. excl. subtribe Barnadesiinae) is briefly considered, although palynological data are of little help for thi
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