Convolvulus capitatus Desr.
Convolvulus guineensis Schumach.
Convolvulus pycnanthus Hochst. ex Choisy
Ipomoea capitata (Desr.) Choisy
Ipomoea guineensis (Schumach.) G.Don
Ipomoea macropoda Bojer
Ipomoea tamnifolia L.
Jacquemontia capitata (Desr.) G.Don
Thyella tamnifolia (L.) Raf.
Close-up of the flowers
Photograph by: Eleanor
Jacquemontia tamnifolia is a slender annual climbing plant producing several stems from the base; these can be 1 - 6 metres long, scrambling over the ground or twining into other plants for support[
The plant is harvested from the wild as a local source of food and medicines. It bears heads of bright blue flowers and can be trained over a trellis as an ornamental climber[
S. America - Paraguay, Bolivia, Ecuador, Colombia, Venezuela; C. America - Panama to Mexico; southern N. America - Texas to Florida.
Moist or dry thickets at elevations around 900 metres in Guatemala[
]. Dry scrub, grasslands and cultivated ground on sandy or rocky soils, at elevations from 60 - 900 metres in east Africa[
|Other Uses Rating||
|Cultivation Status||Ornamental, Wild
A native of tropical and subtropical America, the plant has become naturalized in many parts of Africa[
]. Eaten as a vegetable or mashed and added to soups[
]. The leaves are withered in the sun and then cooked alone or mixed with other vegetables such as peas or amaranth. Coconut milk or pounded
groundnuts are added and the whole is then ready for eating with a staple food such as rice[
An infusion of the leaves is used for washing wounds[
The leaves are crushed with a scent and then applied to the head to relieve a headache332].
The leaves are dried and powdered, then combined with those of Nauclea latifolia, and taken as a snuff in the treatment of neuralgia[
The leaves and roots are chewed and the juice swallowed as an antidote to green mamba bite[
The sap is dripped into the eyes in the treatment of conjunctivitis[
The plant is reduced to ash, mixed with caster-oil, then rubbed into scarifications in the skin in the treatment of leprosy[
Traces of hallucinogenic indole alkaloids have been reported present in the seeds[
Extracts of the whole plant and of the fruits have shown a slight insecticidal activity[
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