Alyssum desertorum “Desert Madwort” Brassicaceae

Missoula, MT
April 23, 2015
Robert Niese

Desert Madwort is a common weed east of the Cascades. Although it is an invasive plant (native to Eurasia), the madwort has been incorporated into the diets of many important PNW species. For example, Pronghorn Antelope consume large quantities of madwort in the winter when other food is scarce. And harvester ants have been known to collect copious quantities of madwort seeds in the fall, and will sometimes collect every single seed that was dropped in a given season.

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