Senecio acutidens Rydb.
-
Authority
New York Botanical Garden. Herbarium of Dr. Per Axel Rydberg. Purchased, 1899. Contributions from the New York Botanical Garden.
-
Family
Asteraceae
-
Scientific Name
-
Description
Species Description - Perennial, with a thick woody rootstock and short caudex, in age glabrate or slightly floccose at the base of the leaves: stems several, about 2 dm. high, angled, more or less tinged with red; basal leaves about 5 cm. long, thick, fleshy and somewhat glaucous, obovate or spatulate: sharply dentate above the middle, at the base entire and abruptly contracted into a slender petiole: lower stem leaves similar or oblanceolate and acute; the upper reduced, linear, laciniate-dentate or somewhat pinnatifid: cymes corymbiforni and rather dense: heads 8-10 mm. high: bracts broadly linear, acute, 2/3 or 3/4 as long as the disk: rays about 5 mm. long and 1.5 mm. wide, 3-4-nerved: achenes slightly angled, glabrous.
-
Discussion
Nearest related to S. cymbalarioides but the leaves are thicker, more glaucous and very acutely dentate. The perennial rootstock and caudex are also thicker and more woody. [Plate 5, f 2.]
-
Distribution
Wyoming : Union Pass, 1 894, Aven Nelson, 8j8 (type in the herbarium of N. Y. Botanical Garden).
Wyoming United States of America North America|