bract

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Related to Involucral bract: bracteole

bract

a specialized leaf with a single flower or inflorescence growing in the axil. See also SPADIX.
References in periodicals archive ?
They were observed on the tepals, bracts, bracteoles and involucral bracts.
These traits included: (1) resin secretion by floral bractlets, (2) pollination by resin-collecting bees, (3) the presence of large involucral bracts, (4) nocturnal closure of these bracts, (5) the tendency of sepals to envelope the pistillate flowers, (6) resin secretion by the pistillate sepals, (7) presence of sharp, detachable trichomes on the pistillate sepals, (8) closure of the involucral bracts around the developing fruits, and (9) resin secretion by leaves and stipules.
Inflorescence terminal, umbellate, 5-19 cm long, 3-7 cm wide, with 6-10 primary involucral bracts, the lowermost 1-2 leaf-like and exceeding the inflorescence, the uppermost setaceous, lowest involucral bract 10-30 cm long, 1.
For instance, initiation of involucral bract primordia was found to herald the irreversibility of the Chrysanthemum morifolium inflorescence meristem (Horridge & Cockshull, 1979).
Involucral bracts linear-lanceolate, acute, [+ or -] 1 mm wide; with stellate, glandular and long simple eglandular trichomes in more or less similar proportions (generally, the eglandular trichomes are the most abundant).
Montola 2003 plants have spines on the leaf tips and along leaf margins and involucral bracts.
Three different triterpenoid saponins, marked here as 1s, 2s and 3s, from involucral bracts of Cynara cardunculus L.
The primary bracts are often described as involucral bracts, the lowermost bracts are usually foliaceous (sheathing or not) or setiform, and the uppermost bracts are very small and glumaceous; however, not rarely, primary bracts can be all foliaceous (Cyperus imbricatus Retz.
5 cm long, 8-10 cm in diameter at apex (including the primary bracts); primary bracts resembling the involucral bracts, but smaller, the outer ones oblong, apex broadly acute and distinctly apiculate, erect at base to spreading-recurved toward the apex, ca.