Definition of cleistogamy in English:

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Pronunciation: /klʌɪˈstɒɡəmi/


[mass noun] Botany
Self-fertilization that occurs within a permanently closed flower.
Example sentences
  • Sporobolus is mostly self-pollinated due to a high degree of sheath cleistogamy, while Panicum is a self-incompatible outbreeder.
  • F 1 plants had chasmogamous flowers, indicating that chasmogamy was dominant to cleistogamy.
  • The majority of grasses in which cleistogamy occurs have both chasmogamous flowers and either one or two types of cleistogamous flowers.



Example sentences
  • Flowering plants had a mean of 9.5 inflorescences on 70 mostly cleistogamous spikelets.
  • We almost walked by the minute yellow flowers of Utricularia subulata, surprisingly still in bloom, and saw many more plants with cleistogamous flowers.
  • In addition, 62% of the flowers on these plants were cleistogamous indicating a high level of self-pollination.


Late 19th century: from Greek kleistos 'closed' + -gamy (from gamos 'marriage').

For editors and proofreaders

Line breaks: cleis|tog¦amy

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