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Secundine vs Primine - What's the difference?

secundine | primine | see also |

In botany terms the difference between secundine and primine

is that secundine is the second coat, or integument, of an ovule, lying within the primine while primine is the outermost integument of an ovule (if it has two.

secundine

English

Noun

(en noun)
  • (botany) The second coat, or integument, of an ovule, lying within the primine.
  • (chiefly, in the plural) The afterbirth, or placenta and membranes.

    • Usage notes

    * (botany) In the ripened seed the primine and secundine are usually united to form the testa, or outer seed coat. When they remain distinct the secundine becomes the mesosperm, as in the castor bean. (Webster 1913)

    primine

    English

    Noun

    (en noun)
  • (botany) The outermost integument of an ovule (if it has two)

    • See also

    * secundine ----