Kenya Natural History Guide >>> Plants >>> Fabaceae >>> Senna septemtrionalis

Arsenic Bush
Smooth Senna

Senna septemtrionalis

Arsenic Bush, Senna septemtrionalis, Kenya, photo © by Michael Plagens

Observed at a roadside southeast of Kitale, Kenya. DEcember 2012.

FLOWERS: The spikes of rather large, bright yellow flowers with five petals.

Terrate seed pods of Arsenic Bush, photo © Michael Plagens SHRUB: This shrub can reach small tree proportions under ideal conditions. Several main stems from ground level.

LEAVES: Leaves are compound, smooth, and dark green. Leaves are tapered to a narrow point. Unpleasant odor when crushed.

RANGE: This is another nonnative plant that has its origins in tropical America. There are related plants native to Africa, so we can expect some native insects will be able to use it.

FRUIT: An erect, partially flattened bean pod turns blackish at maturity.

UNARMED. No thorns.

Fabaceae -- Bean Family -- Caesalpinioideae - Senna Sub-Family

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Kenya Natural History

Copyright Michael J. Plagens, Created on 22 February 2013