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Image of Artemisia campestris subsp. richardsoniana (Bess.)
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Artemisia campestris subsp. richardsoniana (Bess.)

Comprehensive Description

provided by North American Flora
Artemisia richardsoniana Besser (; Hook. Fl. Bor. Am. 1: 323, as synonym. 1833), Bull. Soc. Nat. Mosc. 9: 64. 1836.
Artemisia arclica Besser; Hook. Fl. Bor. Am. 1: 323. 1833. Not A. arclica Less. 1831. Arltmisia caespitosa Besser; Hook. Fl. Bor. Am. 1: 324, in part. 1833. Not A. caespitosa Ledeb. 1833.
A perennial, with a cespitose rootstock; stems 0.5-2 dm. high, coarsely villous; basal leaves loosely and coarsely silky-villous, 3-5 cm. long, twice ternate or quinate, with linear or linearoblong divisions; stem-leaves mostly 3-cleft or the upper entire and narrowly linear; heads several or many in a dense spike, interrupted below; involucre depressed-hemispheric, 4 mm. high, 6-7 mm. broad; bracts about 10, subequal, oval or ovate, rounded at the apex, densely villous on the backs, with dark-brown scarious erose margins; ray-flowers few; corollas villous, 1.5 ram. long; disk-flowers 30-50; corollas slightly villous at the apex or wholly glabrous, with purplish limb, 2.5 mm. long.
Type locality: Arctic coast, Canada.
Distribution: Northwest Territory and northern Alberta.
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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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