Openwoods ragwort, turnip-leaf ragwort
Wyoming, north Colorado and west South Dakota
Between 1 and 2 feet
Cliffs, rocky slopes, margins of coniferous forests, up to 9,000 feet
Oblanceolate to ovate with tapered bases, up to 3.5 inches long, on stalks, with toothed edges
July to September
The inflorescence of senecio rapifolius is a branched, somewhat elongated cluster containing between 20 and 60 or more heads. Individual flowers are small, about a quarter on an inch across, and easily distinguished from many similar species because they have disc florets only, typically around a dozen, surrounded by 8 phyllaries which are linear, colored light green, sometimes with brownish tips.
Leaves grow mainly around the base; they are long -stalked, have a prominent center vein that may be purplish in color, and are lined by large, ragged teeth. Stems also usually have a purple tint. This species inhabits rocky, partly wooded locations at moderate elevations in mountainous areas.