General: Perennial herb from a rhizome; stems erect, openly branched, densely woolly-hairy, 0.2-1.0 m tall.
Leaves: Basal leaves oblanceolate, irregularly pinnately-lobed to entire, 3-10 cm long, 1.0-2.5 cm wide; lower stem leaves smaller, pinnately-lobed; upper stem leaves linear to narrowly lanceolate, entire or saw-toothed.
Flowers: Heads with ray and disk flowers; involucres 9-15 mm tall; involucral bracts in several unequal series, entire, more or less soft-hairy with widely papery tips; ray flowers white to blue, 12-16 mm long; receptacles bristly.
Fruits: Achenes egg-shaped, 3-4 mm long, slightly compressed, glabrous; pappus of many bristles barbed below, feathery above, more or less deciduous.
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.
