Diversity: A family of 75 genera and over 1,000 species of herbs and shrubs that includes taxa domesticated for food (okra - Abelmoschus esculentus), fiber (cotton - Gossypium), and ornament (Hibiscus, hollyhock - Alcea)
Distribution: World wide, but most diverse in the tropics.
Floral structure:
Significant features: Vegetative characters include a general palmate pattern of
leaf
structure (a 'subset' character relative to pinnate), mucilaginous sap
(okra),
an epicalyx (many genera), and unusual,
often
complex trichomes. The androecium of the Malvaceae, with its
monadelphous
stamens, is a primary key character. This is supplemented by the
pentamerous,
actinomorphic corolla that is basally adnate to the androecium.
The
syncarpous (or rarely monocarpic) gynoecium matures
to form either a capsule, a schizocarp (carpels separate as dispersal
units,
no dehiscence), or - rarely - a berry.
Hibiscus - with monadelphous stamens forming a
tube
through which the style emerges
Abutilon
- palmate pattern of lef venation and lobing
Callirhoe involucrata - (wine
cup)
- epicalyx, calyx, and corolla
|
A hollyhock (Alcea rosea) with schizocarpic fruit. | |
|
A cotton (Gossypium hirsutum) capsule with and without comose seeds | |
An exception, the baccate
or berry-like fruit of local species Malvaviscus arboreus
More information on the Malvaceae