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tricolpate
Tricolpate refers to a subclassification of the "Eudicot" monophyletic group, the "true dicotyledons" (which are distinguished from all other flowering plants by their Tricolpate pollen structure). The number of Pollen grain ''furrows'' or ''pores'' helps classify the flowering plants, with eudicots having three colpi (tricolpate), and other groups having one sulcus.〔 ((full text ))〕
Pollen apertures are any modification of the wall of the pollen grain. These modifications include thinning, ridges and pores, they serve as an exit for the pollen contents and allow shrinking and swelling of the grain caused by changes in moisture content. The elongated apertures/ furrows in the pollen grain are called ''colpi'' (singular ''colpus''), which, along with pores, are a chief criterion for identifying the pollen classes.〔http://www.geo.arizona.edu/palynology/ppapertr.html〕
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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