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dichogamy

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Cooksonia hemispherica

Cooksonia hemispherica  

(family Rhyniaceae)An extremely primitive plant from the Upper Silurian and Lower Devonian belonging to a family whose members did, however, possess an epidermis and stomata to control the passage of ...
homogamy

homogamy  

The condition in a flower in which the male and female reproductive organs mature at the same time, thereby allowing self-fertilization. Compare dichogamy.
protandry

protandry  

1 The condition in which the male reproductive organs (stamens) of a flower mature before the female ones (carpels), thereby ensuring that self-fertilization does not occur. Examples of protandrous ...
protogyny

protogyny  

A condition in which the female parts develop first (e.g. the females develop eggs before males produce sperm, or females arrive at breeding grounds before males). Compare protandry.

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