from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A secondary involucre, as at the base of an umbel within a compound umbel.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An involucre that forms at the base of a flower cluster within a compound inflorescence.
from the GNU version of the Collaborative International Dictionary of English
- n. A partial, secondary, or small involucre. See Illust. of involucre.
from The Century Dictionary and Cyclopedia
- n. In botany, a secondary involucre in a compound cluster of flowers, as in many of the Umbelliferæ. See cut under inflorescence (fig. 9).
A portion of the spike; 2. an involucel with two spikelets; 3, 4, 5 and 7. the first, second, third and the fourth glume respectively; 6 and
The _spikelets_ are usually one to two and rarely three in an involucel and each one has four _glumes_.
Inflorescence interrupted, with three to six bristles in the involucel 2.
The _pedicelled spikelets_ of the involucel have firmer harder, shorter and broader pedicels, thickly bearded and consist of two glumes only.
Inflorescence cylindric, continuous and not interrupted, with six to twelve bristles in the involucel 1.
Spikelets are obovoid or lanceolate, 1 - to 2-flowered, persistent on their stalks, one to three in an involucel.
Each cluster consists of an involucel of 4 pedicelled spikelets forming a true whorl around 2 pedicelled and 1 sessile spikelets or 3 pedicelled and 2 sessile spikelets.
The involucel consists of hardened spike-like bristles connate at the base into a short coriaceous cup, which is surrounded by erect or squarrose bristles.
Base of involucel rounded; inner bristles shorter, erect, not ciliate 1.
Spikelets one to three in each involucel, persistent, 1 - to