Rubiaceae
-
Rubioideae
-
Spermacoceae
-
*Diodia
L.
Description
:
Annual or perennial herbs, often diffusely branched with slender, angled branches
Leaves
sessile or subsessile; blades linear to ovate; stipules with 3-6 setose lobes and sheathing at base
Flowers
axillary, small, solitary or verticillate
Calyx
2-4-lobed with lobes persistent, or disepalous; tube ovoid to obovoid
Corolla
usually 4-lobed, white; lobes short, valvate; tube funnel-shaped, membranous
Stamens
usually 4, arising in throat of corolla tube, exserted; anthers dorsifixed
Ovary
usually 2-locular, with 1 ovule in each locule attached at ± middle of septum; style slender, exserted, bidentate at apex; stigma subcapitate
Fruit
separating into indehiscent mericarps, with pericarp not adnate to seed
x = 7 (polyploidy)
Nomenclature:
*Diodia
L.
Linnaeus: 104 (1753)
Linnaeus: 45 (1754)
Sonder: 23 (1865)
Hiern: 230 (1877)
Verdcourt: 162 (1989)
Distribution & Notes:
Global
: Species ± 30, tropical and warm regions of America and Africa
Southern Africa
: Species 1: *
Diodia dasycephala
Cham. & Schltdl. is a roadside weed in Eastern Cape
References:
HIERN, W.P. 1877.
Rubiaceae
.
Flora of tropical Africa
3
LINNAEUS, C. 1753.
Species plantarum
. Laurentius Salvius, Stockholm.
LINNAEUS, C. 1754.
Genera plantarum
, edn 5. Laurentius Salvius, Stockholm
SONDER, O.W. 1865.
Rubiaceae
.
Flora capensis
3
VERDCOURT, B. 1989.
Rubiaceae
.
Flora zambesiaca
5,1
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