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Patterson's Wormwood

Delwiensia pattersonii (A. Gray) W. A. Weber & R. C. Wittmann

Comprehensive Description

provided by North American Flora
Artemisia pattersonii A. Gray, Syn. Fl. N. Am. ed. 2 1': 453. 1886.
Artemisia scopulortitn monocephala A. Gray, Proc. Acad. Phila. 1863: 66. 1863. .4 r/em»S(o monotefAaia A. Heller, Muhlenbergia 1: 118. 1905.
A perennial herb, with a simple or cespitose rootstock; stem 1-1.5 dm. high, silky-canescent, simple; basal leaves 2-4 cm. long, silky-canescent, pinnately divided into 3-5 linear-oblanceolate, approximate divisions; stem-leaves 3-cleft or entire; heads solitary, or 2-4 in a dense congested spike, heterogamous; involucre broadly hemispheric, 4-5 mm. high, 7-12 mm. broad; bracts 20-30, lanceolate, ovate, or oblong, acute or obtuse, in about 3 series, villous, with greenish or gray backs and dark-brown or black scarious margins; ray-flowers 10 or less; corollas about 3 mm. long; disk-flowers 40-60; corollas dark-brown, 3 mm. long.
Type locality: Rocky Mountains, Colorado [probably on the headwaters of Clear Creek]. Distribution: Colorado.
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bibliographic citation
Per Axel Rydberg. 1916. (CARDUALES); CARDUACEAE; TAGETEAE, ANTHEMIDEAE. North American flora. vol 34(3). New York Botanical Garden, New York, NY
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Artemisia pattersonii

provided by wikipedia EN

Delwiensia is a monotypic genus of flowering plants belonging to the family Asteraceae. The only species is Delwiensia pattersonii,[2] also known as Patterson sagewort or Patterson's wormwood, and formerly Artemisia pattersonii. The species is found in Western Central USA, [2] growing in the Rocky Mountains of Wyoming, Colorado, and New Mexico.[3][4]

Delwiensia pattersonii is a mildly aromatic perennial up to 20 cm (8 inches) tall. Leaves are gray-green with fine, silky hairs. Heads are usually borne one at a time but sometimes more, generally nodding (hanging), yellow tinged with red. The species grows in alpine meadows at high elevations over 3500 meters (11,500 feet).[5]

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Artemisia pattersonii: Brief Summary

provided by wikipedia EN

Delwiensia is a monotypic genus of flowering plants belonging to the family Asteraceae. The only species is Delwiensia pattersonii, also known as Patterson sagewort or Patterson's wormwood, and formerly Artemisia pattersonii. The species is found in Western Central USA, growing in the Rocky Mountains of Wyoming, Colorado, and New Mexico.

Delwiensia pattersonii is a mildly aromatic perennial up to 20 cm (8 inches) tall. Leaves are gray-green with fine, silky hairs. Heads are usually borne one at a time but sometimes more, generally nodding (hanging), yellow tinged with red. The species grows in alpine meadows at high elevations over 3500 meters (11,500 feet).

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