Comprehensive Description
provided by North American Flora
Hymenopappus tomentosus Rydb. Bull. Torrey Club
27: 633. 1900.
A leafy-stemmed biennial or perennial; stem densely and permanently white-tomentose,
3-4 dm. high; leaves .5-7 cm. long, bipinnatifid into linear divisions 4-10 mm. long, about 1
mm. wide; heads several, corymbose; involucre 5 mm. high, 8 mm. broad, densely woolly;
bracts elHptic-obovate, with yellow tips; corollas yellow; tube fully 1 mm. long; throat
campanulate, about as long as the tube, a little longer than the ovate lobes; achenes 3 mm.
long, silky-strigose; squamellae obovate, a little shorter than the corolla-tube.
Type locality: St. George, Utah.
Distribution: Known only from the type locality.
- bibliographic citation
- Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
