bilabiate


Also found in: Dictionary, Thesaurus, Encyclopedia.

bilabiate

(bī-lā′bē-ĭt, -āt′)
adj.
Having two lips or liplike parts, as in the flowers of many plants in the mint family.
References in periodicals archive ?
8 cm long, corolla erect in the calyx, limb bilabiate, yellow with two deep purple vertical stripes along both sides of the ventral lobe, and a nectary of one dorsal gland (Figures 6 and 7).
chocoensis has a bilabiate narrow limb with the upper limb formed by four lobes, instead of two, and C.
Haemodoraceae have some monosymmetric genera in both subfamilies, such as Pyrrorhiza (with one stamen), Schiekia, Wachendorfia in Haemodoroideae, and the conspicuously bilabiate Anigozanthos in Conostylidoideae (Simpson, 1990, 1998).
In Xyridaceae the calyx is monosymmetric in Abolboda and Xyris, the corolla is bilabiate in Orectanthe, and the ovary is dorsiventrally compressed in Aratitiyopea (Kral, 1998).
The bilabiate corolla was generally considered the typical form in the Mutisioideae.
a) Bilabiate (3+2 corolla lips): zygomorphic, with an external three-dentate lip, radiating or not, and an internal two-cleft lip (Fig.
The ligulate corolla of Catamixis results unusual for Mutisioideae, where there is a predominance of bilabiate corollas (although some species of Mutisia have also ligulate florets).
Florets isomorphic in dioecious and gynodioecious plants, or dimorphic in monoecious plants; marginal florets female or neuter, with or without staminodes, corolla bilabiate, outer lip expanded or not, inner lip developed to absent, sub-bilabiate (3+1 corolla lips), or true ray; central florets bisexual or male, corolla bilabiate to tubular-bilabiate; female capitula with all florets female, bilabiate; anther apical appendages acute, tails papillose; style bilobed to bifid, branches dorsally papillose.
Florets dimorphic or rarely isomorphic; marginal florets female, with staminodes, corolla bilabiate, outer lip expanded or not, inner lip developed to very reduced, or true ray; central florets bisexual, corolla bilabiate; or all the florets bisexual, corolla bilabiate, sub-bilabiate (4+1 corolla lips), or ligulate; anther apical appendages acute, tails smooth; style bilobed, dorsally papillose.
Capitulescences cymose, two- to nine-headed, subterminal to lateral, rarely monocephalous; capitula pedunculate, homogamous, bilabiate, two- to five-flowered; receptacle epaleate; involucre multiseriate, cylindrical, phyllaries glabrous.
Florets isomorphic or dimorphic, bisexual; marginal florets with corolla bilabiate, outer lip expanded or not; central florets with corolla bilabiate; anther apical appendages acute, tails smooth; style bifid, branches apically truncate, crowned by collector hairs.
Florets dimorphic, bisexual, marginal florets with corollas bilabiate, outer lip expanded; central florets with corollas actinomorphic, tubular-campanulate, deeply five-lobed, tube narrow, abruptly dilated into a limb, lobes coiled; anther apical appendages apiculate, tails papillose; styles bilobed, branches appressed, dorsally sparcely papillose, papillae reaching the bifurcation point.