Artemisia rupestris

Linnaeus

Sp. Pl. 2: 847. 1753

Synonyms: Absinthium viridifolium var. rupestre (Linnaeus) Besser Artemisia rupestris subsp. woodii Neilson
Treatment appears in FNA Volume 19. Treatment on page 520. Mentioned on page 519.
Perennials, 5–15(–25) cm (cespitose), faintly aromatic. Stems brownish purple, glabrous. Leaves deciduous, bright green; blades (proximalmost petiolate) ovate, 1.5–5 × 1–2.5 cm, 2–3-pinnately lobed (cauline sessile, ternately or pinnately lobed, terminal lobes lance-linear, 1–6 × 0.5–1 mm), faces glabrous or sparsely hairy, glandular. Heads (5–9, pedunculate or sessile, spreading or drooping) in spiciform arrays 3–9 × 0.5–1 cm. Involucres globose, 4–5(–7) × 4–5(–7) mm. Phyllaries green (margins light green), ± hairy. Florets: pistillate 14–16 (glandular, style branches exsert, linear, spreading); bisexual 40–70; corollas 1.5–2 mm, glabrous or glandular (styles shorter than corollas). Cypselae ca. 1 mm (apices flat), glabrous.

Phenology: Flowering late summer–fall.
Habitat: Steppes, alkaline meadows, stony slopes
Elevation: 0–1400 m

Discussion

The sole North American occurrence of Artemisia rupestris in southwestern Yukon is a remarkable disjunction from the Asiatic range of this species.

References

None.

Lower Taxa

No lower taxa listed.