This section is from the book "Harper's Guide To Wild Flowers", by Caroline A. Creevey. Also available from Amazon: Harper's Guide To Wild Flowers.
The flowers of this species are rather large, about 1/2 inch across, on ascending branches that are grooved and strongly angled. Sepals, bristly margined, sharp - pointed, 3-nerved. Flowers, in irregular corymbs. Pods, conspicuous, roundish. Leaves, alternate, long, narrow, with a pair of dark-colored glands instead of stipules. Plant 2 feet high or less.
In dry soil, mostly in the interior, along the mountains to Georgia westward.
 
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