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Wildflowers of Texas, Plant Resources Center, University of Texas at Austin

Unicorn Plant   Proboscidea louisianica  subsp.  fragrans
Sesame family — Pedaliaceae

Also known as:
Common Devil's Claw, Ram's Horn, Cow-catcher, Mule-grab

Slides: (click for larger view)


Many of the common names of this plant come from the hook-tipped fruits, which, when they dry, each split in half lengthwise to form two opposed hooks that easily catch in fur or cloth or around the ankle of livestock. This dark-flowered subspecies of the common devil's claw is common in the Trans-Pecos, while the related lighter-flowered subspecies occurs in many other parts of the state. Although an annual, it can form a clump to six feet across with sticky, unpleasant-smelling leaves, usually growing in weedy or disturbed areas and around cattle pens. It flowers mostly n the summer.

Dried Specimens: (click for larger view)


Flowering Months: June, July, August, September

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