Sources

The Origin of the Six-Furrowed Configuration of Dahlia Pollen Grains

Roger P. Wodehouse

Bulletin of the Torrey Botanical Club , Vol. 57, No. 6 (Jun., 1930) , pp. 371-380

Published by: Torrey Botanical Society

Article Stable URL: http://www.jstor.org/stable/2480640

Northwest Fuchsia Society

Types of Apertures

Pollen Surface 

Asain Lily Source:
http://en.wikipedia.org/wiki/Lilium_concolor
http://en.wikipedia.org/wiki/Lilium

Dahlia Source:
http://en.wikipedia.org/wiki/Dahlia_coccinea
http://en.wikipedia.org/wiki/Dahlia

Fuschia Source:
http://eol.org/pages/5465826/overview
http://en.wikipedia.org/wiki/Fuchsia