Perennial herb from a creeping rhizome; stems erect, branched, sparsely hairy or nearly glabrous, 15-60 cm tall.
Basal leaves lacking, lower leaves opposite, upper leaves alternate, unstalked or more or less stalked, oblong to broadly linear, 1-5 cm long, entire.
Heads disciform on short, axillary stalks, nodding, greenish-white; involucres 2-4 mm tall; involucral bracts 4-6, fused at the base; female corollas tubular, 1 mm long.
Achenes with unstalked glands, compressed, 2-3 mm long; pappus lacking.
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Synonyms and Alternate Names:
Iva axillaris subsp. robustior (Hook.) Bassett
Iva axillaris var. robustior Hook.