Hypertext Webster Gateway: "calyptra"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Calyptra \Ca*lyp"tra\ (k[.a]*l[i^]p"tr[.a]), n. [NL., fr. Gr.
kaly`ptra a covering for the head, fr. kaly`ptein to cover.]
(Bot.)
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.
From WordNet (r) 1.7 (wn)
calyptra
n : the hood or cap covering the calyx of certain plants: e.g.,
the California poppy
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