familyAsteraceae
genusArtemisia
subgenusArtemisia subg. Tridentatae
speciesArtemisia arbuscula
subspeciesArtemisia arbuscula subsp. longiloba
Difference between revisions of "Artemisia arbuscula subsp. longiloba"
Sida 21: 1637. 2005.
Basionym: Artemisia spiciformis var. longiloba Osterhout Muhlenbergia 4: 69. 1908
Synonyms: Artemisia longiloba (Osterhout) Beetle Seriphidium arbusculum subsp. longilobum (Osterhout) W. A. Weber
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Revision as of 21:21, 16 December 2019
Leaves broadly cuneate (4–10 × 2–5 mm, often irregularly lobed, lobes rounded, middle lobes overlapping lateral lobes). Involucres 2–3 × 1.5–2.5 mm. 2n = 18, 36.
Phenology: Flowering early–late spring.
Habitat: Clay soils of alkaline basins and valleys, occasionally on outwash plains of mountains
Elevation: 1500–2500 m
Distribution
Calif., Colo., Idaho, Mont., Oreg., Utah, Wyo.
Discussion
Subspecies longiloba is distinguished from other members of the Artemisia arbuscula complex by its early blooming time. It is the only member of subg. Tridentatae to begin flowering as snow melts in early spring, and it is ecologically distinguished from other subspecies by its occurrence at low elevations, in fine-grained clay soils.
Selected References
None.
Lower Taxa
None.