hypanthium


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Related to hypanthium: schizocarp, indehiscent

hypanthium

[hi′pan·thē·əm]
(botany)
Expanded receptacle margin to which the sepals, petals, and stamens are attached in some flowers.
References in periodicals archive ?
The combination of characters present in this taxon: small pentamerous flowers with cupulate hypanthium ending in a thick presumably nectariferous rim, triangular sepals with a prominent midvein or keel, thin clawed cucullate petals alternating with the sepals, and stamens opposite to the petals is not found in the Solanaceae or even in the Asteridae, but in the Rhamnaceae, a family that is today classified with the Order Rosales in the Rosid clade (APG, 1998, 2003).
Hypanthium obconic to subglobose, 3-4(-5) x 3-5(-7) mm, green and often suffused with maroon, glabrous, with 10 conspicuous longitudinal veins; calyx lobes linear to narrowly ovate, (2-)3-5 mm x 0.
Hypanthium subglobose, 6-8 mm long; calyx lobes narrowly oblong, 10-14 x 1-3 mm, strongly reflexed, margins slightly dentate, apex obtuse and often ending in a callose tooth; corolla slightly curved during anthesis, 1.
The fins (or wings) may be derived from ovary outgrowth, perianth, hypanthium, or bract elaboration.
The pedicel-like structure with no obvious scars, corresponds to the elongate receptacle or hypanthium typical of extant Combretaceae and the epigynous perianth remnants indicate that the fruit developed from an inferior ovary.
In other words, the hypanthium extends above the apex of the ovary with extensions of the locules creating an internal, hollow gap within the abaxial and adaxial surfaces of the hypanthium.
Flowers solitary in the axils of upper leaves; peduncle purple, sparsely to densely pubescent, (3-) 4-7 (-8) cm long at anthesis, with two club-like bracts, 2-3 mm long each; hypanthium subglobose, 6-9 mm long, 5-8 mm in diameter, densely pubescent; calyx lobes liguliform, (3-) 5-9 x 2-4 mm, patent to reflexed, with the margins subentire; corolla straight at anthesis, 2.
Flowers solitary in the axils of upper leaves; peduncle green, densely pubescent, (3-)4-6 cm long at anthesis, with two filiform bracts, 4-6 mm long each; hypanthium subglobose, 5-7 mm long, 5-6 mm in diameter, densely pubescent; calyx lobes lanceolate, (11)13-16 x 1-3 mm, patent, with the margin subentire, sinus between the lobes of 1-2 mm width; corolla straight at anthesis, (2.
5 mm each; hypanthium cupuliform, 6-8 mm long, 5-7 mm in diameter, sparsely pubescent; calyx lobes lanceolate, patent, 5-8 x 2-3 mm, with the margins subentire, pale green with the margins suffused with maroon, sinus between the lobes 1-1.
5-8 cm long at anthesis, ebracteate; hypanthium obconic, 5-7 mm long, 4-5 mm in diameter, glabrous; calyx lobes lanceolate, 13-16(-20) x 1-2 mm, erect, with the margins entire to slightly serrulate with two or three teeth on each side; corolla straight at anthesis, glabrous, pale pink to maroon, 2-2.