Pollen morphology in Campanulaceae IV
作者:
Anita Dunbar,
期刊:
Nordic Journal of Botany
(WILEY Available online 1984)
卷期:
Volume 4,
issue 1
页码: 1-19
ISSN:0107-055X
年代: 1984
DOI:10.1111/j.1756-1051.1984.tb01961.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
The exine structure has been studied in Campanulaceae s. lat. The results are combined with those in previous studies of shape, sculpturing and aperture conditions. Fifteen further species have been studied by SEM. Two main groups of pollen are found: (1) porate pollen with spinules and ridges/protrusions or a low relief reticulum, combined with an ektexine varying from simple to complex and a lamellated endexine; (2) 3–colpate/colporate pollen with a high relief reticulate/striate surface sculpturing, in general a homogeneous ektexine and an endexine lacking lamellae. The first group corresponds to Campanulaceae s. str., the second to Lobeliaceae s. str. Some genera likeCyananthus, CodonopsisandParishellahave unique characters which make them difficult to place in any of the two main group
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