Three Corner Nut

Oxygonum sinuatum
(Ceratogonum cordofanum)

Oxygonum sinuatum photo © by Michael Plagens

Observed in a farm plot near Eldoret, Kenya, Africa. December 2012.

FRUIT: Like most buckwheats the seeds are three-angled, and in this case there's also a sharp point at each angle. I couldn't find a widely used common name, so I made one up from this feature.
Oxygonum sinuatum photo © Michael Plagens
HERBACEOUS: Slender ribbed stems with widely spaced leaves. Length mostly less than 2 m. Tends to lean and scramble upon nearby plants.

FLOWERS: The flowers are small, with four or five petals, and either pale pink or else white. Several clustered together at nodes.

LEAVES: Leaves are elliptic with conspicuously wavy margins. A brownish sheath encircles the stem where the leaf attaches.
leaf of Oxygonum sinuatum photo © by Michael Plagens
RANGE: This plant is native to many parts of eastern Africa including Kenya.

ARMED: The seed prickles are uncomfortably sharp especially if handled when pulling from garden weeds.

Polygonaceae -- Buckwheat Family

More Information:


Kenya Natural History

Copyright Michael J. Plagens, Created on 2 July 2013