Abutilon

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Bean

Family

  • Malvaceae

Glossary

calyx
(pl. calyces) Outer whorl of the perianth. Composed of several sepals.
family
A group of genera more closely related to each other than to genera in other families. Names of families are identified by the suffix ‘-aceae’ (e.g. Myrtaceae) with a few traditional exceptions (e.g. Leguminosae).
gynoecium
The female sex organs in a flower (e.g. carpels).
ovary
Lowest part of the carpel containing the ovules; later developing into the fruit.
section
(sect.) Subdivision of a genus.
style
Generally an elongated structure arising from the ovary bearing the stigma at its tip.

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Sources

Bean

A genus of about one hundred woody or herbaceous species, mostly tropical and sub-tropical in distribution. The cultivated species are soft-wooded plants, nearly all of them natives of Central and S. America, with showy flowers borne singly in the leaf-axils, or in small panicles. As is common in the Mallow family the numerous stamens are united into a tube which surrounds the gynoecium; the ovary has several chambers and the style is divided into as many arms as there are chambers; the calyx may be tubular and only shortly five-lobed, or divided to the base into five segments; petals five. The fruit is dry and splits into segments (schizocarps), each of which opens to release a few seeds.

A. vitifolium, A. ochsenii and two other species not described here are characterised by a type of style not seen elsewhere in the genus and are for this reason separated as a distinct section – Corynabutilon – or even as a distinct genus (Kearney in Leafl. West. Bot., 5, p. 189, 1949).

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