different between secundine vs mesosperm

secundine

English

Etymology

from Late Latin secundinae (afterbirth), from Latin secundae (the afterbirth), shortened from secundae membranae "the second membranes", from secundus (following, coming next). See second

Noun

secundine (plural secundines)

  1. (botany) The second coat, or integument, of an ovule, lying within the primine.
  2. (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.

References

secundine From the web:

  • what does secundines meaning
  • what does secundines
  • what is retained secundines


mesosperm

English

Noun

mesosperm (plural not attested)

  1. (botany) A membrane of a seed.

See also

  • secundine

mesosperm From the web:

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