- rhizomatous perennial forming small colonies
- stems usually about 1 foot tall
- leaves simple, silvery-gray, lanceolate to oblanceolate, entire (not lobed as in many ragweeds)
- flowers inconspicuous, in axillary racemes of tiny bell-like structures
- grasslands on loamy soils
- Cameron, Jim wells, Kleberg and Nueces counties and northern Tamaulipas
- federally listed as Endangered
