Description: Perennial herbs with trailing or twining stems.
Leaves simple, entire, often sagittate or hastate, ± glabrous; hairs simple.
Flowers axillary, solitary or rarely in few-flowered cymes, with large persistent bracteoles ± enclosing the calyx. Sepals 5, free, subequal. Corolla campanulate to funnel-shaped, entire or shallowly 5-lobed, glabrous, with distinct mid-petaline bands. Stamens 5, subequal with short hairs along the basal fused margins of the filaments up to about the point of attachment. Ovary 1- or incompletely 2-locular with 4 ovules, glabrous; style 1, bearing 2 oblong or elliptic stigmatic lobes.
Capsule globose or ovoid, splitting longitudinally into 4 valves.
Distribution and occurrence: World: c. 25 species, mainly temperate regions. Australia: 4 species (3 species native, 1 species naturalized), all States except N.T.
Text by R. W. Johnson
Taxa not yet included in identification key
| ||Key to the species|| |
|1||Trailing, rarely weakly twining, plants; leaves rounded, reniform||Calystegia soldanella|
|Twining plants; leaves more or less acute||2|
|2||Peduncles longer than petioles; corolla more than 2.5 cm long||3|
|Peduncles not longer than petioles; corolla less than 2.5 cm long|
Back to 1
|3||Bracteoles to 15 mm wide, acute||Calystegia sepium|
|Bracteoles more than 15 mm wide, rounded to emarginate|
Back to 2