Pollen aperture

Furness, C. A. and Rudall, P. J. (2004). Pollen aperture evolution - a crucial factor for eudicot success Trends in Plant Science, 9,1360-1385. 

Harley, M. M. and Baker, W. J. (2001). Pollen aperture morphology in Arecaceae application within phylogenetic analyses, and a summary of the fossil record of palm-like pollen. Grana, 40, 45-77. 

Rehman, S. Yoo, N. H. Park, M. R. Yun, S. J. Confocal potassium imaging giving new insight into potassium concentrated at the aperture area of barley (Hordeum vulgare L.) pollen. Plant Set. 2005, 169, 457 59. 

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