An Illustrated Guide to ARIZONA WEEDS

The University of Arizona Press

SLIMPOD SENNA, longpod senna


PEA FAMILY-Leguminosae

SLIMPOD SENNA-Cassia leptocarpa Benth. var. glaberrima Jones

DESCRIPTION-A rank smelling bushy very leafy perennial, 2 to 3 feet high, reproducing by seeds. The stems are greatly branched above, often spreading 2 to 4 feet in diameter. The alternate leaves are a deep bright green 3 to 7 inches long, and divided into 4 to 8 pairs of sharp pointed lanceshaped leaflets. These are 1 to 2 3/4 inches long and nearly hairless, except for the short eyelashlike hairs around the edges. There is a large gland near the base of the leaf stalk.

The showy orange yellow flowers are on long flowering branches at the top of the stems. There are 5 petals, l/2 to 3/4 inch long, and 10 stamens with large orange anthers. The long slender pods are several in a drooping cluster. They are dull brown, 5 to 10 inches long when mature, and have 1 row of seeds. The seeds are grayish brown, broadly cubical in shape, and about 1/8 inch in diameter.

DISTRIBUTION-Slimpod senna is a native range weed found in very much the same type of places as the other sennas. It is common along roadsides, streams, washes, canyons, and eroded areas in southeastern Arizona desert, desert grassland, and desert shrub ranges, largely in Graham, Pinal, Cochise, Santa Cruz, and Pima counties; 2,500 to 5,500 feet elevation; flowering June to September.

Copyright (c) 1972 The Arizona Board of Regents

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