(definition) by Webster 1913 Wed Dec 22 1999 at 0:32:08

In"vo*lu`cre [L. involucrum a covering, wrapper, fr. involvere to wrap up, envelop: cf. F. involucre. See Involve.] Bot. (a)

A whorl or set of bracts around a flower, umbel, or head.

(b)

A continuous marginal covering of sporangia, in certain ferns, as in the common brake, or the cup-shaped processes of the filmy ferns.

(c)

The peridium or volva of certain fungi. Called also involucrum.

 

© Webster 1913.

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