calyptera

English

Noun

calyptera (plural calypteras)

1. Alternative form of calyptra
   • 1938, Gilbert Morgan Smith, Cryptogamic Botany, page 56:

     When the sporophyte has attained about a quarter of its eventual length, it pushes through the apex of the calyptera and grows upward above the perianth (Fig. 32B).

   • 1995, Richard Kent Schaefers, Nucellar Somatic Embryogenesis:

     Because the calyptera protects the ovule from injury by surface sterilization treatments, a 1-2% sodium hypochlorite (« 10-20% household bleach) with .01% Tween-20 may be used for 10-15 minutes with vigorous shaking.

Anagrams

• calyptrae, caprylate