bract

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Related to Involucral bract: bracteole

bract

 (brăkt)
n.
A leaflike or scalelike plant part, usually small, sometimes showy or brightly colored, and located just below a flower, a flower stalk, or an inflorescence.

[From Latin bractea, gold leaf, perhaps from Greek brakhein, to rattle.]

brac′te·al (brăk′tē-əl) adj.

bract

(brækt)
n
(Botany) a specialized leaf, usually smaller than the foliage leaves, with a single flower or inflorescence growing in its axil
[C18: from New Latin bractea, Latin: thin metal plate, gold leaf, variant of brattea, of obscure origin]
ˈbracteal adj
ˈbractless adj

bract

(brækt)

n.
a specialized leaflike plant part, sometimes large and showy, usu. situated at the base of a flower or inflorescence.
[1760–70; earlier bractea < Latin: a thin plate of metal]
brac′te•al, adj.
brac′te•ate (-ti ɪt, -ˌeɪt) bract′ed, adj.
bract′less, adj.

bract

(brăkt)
A small, leaf-like plant part growing just below a flower or flower stalk. Most bracts are thin and inconspicuous, but some are brightly colored.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.bract - a modified leaf or leaflike part just below and protecting an inflorescencebract - a modified leaf or leaflike part just below and protecting an inflorescence
inflorescence - the flowering part of a plant or arrangement of flowers on a stalk
calycle, calyculus, epicalyx, false calyx - a group of bracts simulating a calyx as in a carnation or hibiscus
husk - outer membranous covering of some fruits or seeds
bracteole, bractlet - a small bract
spathe - a conspicuous bract surrounding or subtending a spadix or other inflorescence
involucre - a highly conspicuous bract or bract pair or ring of bracts at the base of an inflorescence
glume - small dry membranous bract found in inflorescences of Gramineae and Cyperaceae
Translations
HochblattTragblatt

bract

nTragblatt nt
References in periodicals archive ?
The involucral bract and bracteoles of the staminate flower have a single-layered epidermis on both surfaces (see Figure 2A, B).
Subsequently, nocturnal closure of the large involucral bract evolved, apparently to provide a new line of defense against nocturnal florivores [ILLUSTRATION FOR FIGURE 4 OMITTED].
The inflorescences also have longer bracts, with the longest (lowest) involucral bract being 1.
This "transition apex" is distinguished from the vegetative apex by its larger size and broader shape but lacks apical derivatives such as involucral bract primordia, floral primordia, or receptacular bract primordia (Popham, 1964; Popham & Chan, 1952).
Involucral bracts mucronate, hairless, obtuse, narrowly thin-margined.
Pilosellina and it is well characterized basically by having monocephalic scapes, short and relatively thick (or absent) stolons, dense white stellate trichomes on both adaxial and abaxial surfaces of the leaves and abundant long simple eglandular and stellate trichomes on involucral bracts and scapes.
Pistillate inflorescences capitate, arranged in 2-5 racemes, each with 4-7 flowers, peduncles to 20 mm long, congested in anthesis, expanded after fertilization, pedicels short < 1mm long; involucre well differentiated 1-2 mm long, sacciform to urceolate in shape, very thick, with 4-5 lanceolated lobes < 1 mm long, bicolor, the basal half darker than the upper; stigma somewhat exserted, lobed and decurrent; lower part of the perianth consists of 4 lanceolate involucral bracts 1 mm long; indumentum densely short velutinous; no staminodes are present.
Inflorescence broadly capitate, simple, umbellate, apex nearly flat, sunk in the center of the rosette, 8-9 cm long (excluding the petals), 9-12 mm in diameter, 56 to 65-flowered; floral bracts entire to remotely denticulate at the apex, green, membranaceous, distinctly nerved, longitudinally sulcate mainly near the apex, sparsely to subdensely white-lepidote outside, glabrous inside, the outer ones resembling the involucral bracts, ecarinate, slightly exceeding the ovary, the inner ones narrowly ovate-lanceolate to sublinear-lanceolate, acuminate, ecarinate or bearing a protruded central nerve and appearing carinate, 45-60 x 8-20 mm, slightly exceeding the ovary.