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[klahy-stog-uh-muh s] /klaɪˈstɒg ə məs/
adjective, Botany
pertaining to or having pollination occurring in unopened flowers.
Also, cleistogamic
[klahy-stuh-gam-ik] /ˌklaɪ stəˈgæm ɪk/ (Show IPA)
Compare chasmogamous.
1880-85; cleisto- + -gamous
Related forms
cleistogamously, cleistogamically, adverb
cleistogamy, noun
noncleistogamic, adjective
noncleistogamous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for cleistogamous
  • cleistogamous seed develops within the leaf sheaths at the bases of plants in early summer and matures by late summer.
  • Fertile cleistogamous flowers often produced after the normal ones on short, prostrate to erect peduncles.
  • Downy brome is cleistogamous and self-fertile, with no evident out-crossing.
  • It is cleistogamous and selffertile, with no evident outcrossing.
cleistogamous in Science
Of or relating to a flower that does not open and is self-pollinated in the bud. The fertile flowers of the violet are inconspicuous and cleistogamous, while the plant's more familiar showy flowers are usually infertile.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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