What's the difference between archegonium and calyptra?

Archegonium


Definition:

  • (n.) The pistillidium or female organ in the higher cryptogamic plants, corresponding to the pistil in flowering plants.

Example Sentences:

  • (1) It moves down the neck of the archegonium into the cavity above the egg.

Calyptra


Definition:

  • (n.) A little hood or veil, resembling an extinguisher in form and position, covering each of the small flasklike capsules which contain the spores of mosses; also, any similar covering body.

Example Sentences:

  • (1) Field observations and experiments indicate that the closely related, fruit-piercing Oraesia emarginata is not skin-piercing blood-sucking--a habit likely to be exhibited mainly in humid equatorial regions by a few Calyptra only.
  • (2) Of the scarce Calyptra minuticornis, C. orthograpta and C. labilis, 51, 24, and 7 adults, respectively, were observed during some 600 night inspections at over 100 sites in 1965--1967 and 1971--1977.