bisaccate
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Bisaccate — Bi*sac cate, a. [Pref. bi + saccate.] (Bot.) Having two little bags, sacs, or pouches. [1913 Webster] … The Collaborative International Dictionary of English
saccus — noun A bladder or wing like structure found on the pollen grains of many species of conifer. The shape or number of the sacci on a pollen grain can help identify the species it came from. See Also: bisaccate, monosaccate, saccate … Wiktionary