Also found in: Thesaurus, Medical, Encyclopedia.
Related to bracteole: involucre


A small bract.

[Latin bracteola, gold leaf, diminutive of bractea; see bract.]


(Botany) a secondary bract subtending a flower within an inflorescence. Also called: bractlet
[C19: from New Latin bracteola, from bractea thin metal plate; see bract]
bracteolate adj


(ˈbræk tiˌoʊl)

also bract•let

(ˈbrækt lɪt)

a small or secondary bract, as on a pedicel.
[1820–30; < New Latin bracteola < Latin bracte(a) a thin plate of metal]
brac′te•o•late (-ə lɪt, -ˌleɪt) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.bracteole - a small bract
bract - a modified leaf or leaflike part just below and protecting an inflorescence
References in periodicals archive ?
lucida (Swamy, 1953) and the same plus a lateral bract (bracteole) in A.
Inflorescences produced before leaves, subtended by small bracts on reduced cymes with 2-5 flowers per cluster, flowers rarely solitary; peduncles stout, 2-3 mm long, pedicels slender, <2 mm long, with a basal small and caducous bracteole <1 mm, soon deciduous.
The pistillate flowers are clustered in cyme-like inflorescences that consist of three flowers, three laciniate tepals and one short, lanceolate, pilose, yellow-greenish bracteole (see Figure 1E).
The following characteristics were used: bracteole form, vegetation habit, standard color, wings color, string bean color, string bean transversal section, string bean bending, string bean suture, string bean color at the physiological maturation, wall of the string bean staple fibers, string bean standard tegument, seeds tegument darker color, seeds brightness, seeds form, hypocotyls pigmentation, emergent cotyledon color, color tonality from the chlorophyll leaf, anthocyanin in the leaf, leaf form, leaves persistence, lodging, floral size, bracteoles button size, bracteole/chalice length relation, chalice/bracteole color, wings opening, stiletto/keel relation, string bean position in the plant, string bean apex position and dry string bean color and seeds ribbing.
Typical microscopic characters of powdered hop cones include numerous large yellow glands unique to the species (lupulin glands), abundant bracteole and leaf fragments, as well as sparsely distributed glandular and many covering trichomes (Jackson and Snowden, 1968; Neve, 1991; Yamada et al., 1998; Youngken, 1950).
Inflorescences are loose, not dense; subtending floral leaves have a sparse covering of capitate-sessile glandular trichomes; perigonal bracts (i.e., bracteole, calyx) have a relatively sparse covering of capitate-stalked glandular trichomes.
1 Gynoecium densely sericeous; bracteole gland, when present, sessile and covering much of the abaxial surface of the bracteole; stipules 1.5-3 mm long, connate their whole length; northwestern Amazonia (Brazil and Colombia) L.
Bract and bracteole present, very unequal, white, membranous with long tapering, rather flaccid tips.
Inflorescence are glomerule type and axillar, with 2.5 to 3 cm diameter, bract measure 1.5 x 0.8 cm, are ovate, acute, tomentose, green-cinereous; bracteole are ovate, acute, with 1.3 x 0.4 cm, peduncle are 1-3 cm long.
(1991a); (iv) growth habit classified by the CIAT (1987) 1-to-4 scale; (v) length of the fifth internode on the main stem measured in centimeters; (vi) bracteole shape classified as cordate, ovate, lanceolate, or triangular; (vii) bracteole size classified as small, medium, or large; (viii) outer base of the standard of the corolla classified as striped or smooth; and (ix) pod beak position classified as either placental or central.
Anther, br, bracteole; ca, calyx; cp, cupular pedicel; fb, first order bract, 1st, long stamen; p, petal; s, stigma; sb, second order bract; sst, short stamen; sy, style; Scale bars = 5 mm in a, b, d, h; 2 mm in c, e, f; 1 mm in g, i.
Townsend, the partial florescence consists of a solitary hermaphrodite flower and a solitary small sterile flower formed by a large-celled, spongy, ventrally floccose cylinder tipped with small greenish processes present within and scarcely exceeding one bracteole, with the second bracteole empty (Townsend, 1993).