Artemisia tripartita

Rydberg
Mem. New York Bot. Gard. 1: 432. 1900.
Common names: Three-tipped sagebrush
IllustratedEndemic
Basionym: Artemisia trifida Nuttall Trans. Amer. Philos. Soc., n. s. 7: 398. 1841,
Synonyms: Artemisia tridentata subsp. trifida H. M. Hall & Clements Seriphidium tripartitum (Rydberg) W. A. Weber
Treatment appears in FNA Volume 19. Treatment on page 518. Mentioned on page 510, 512, 515.

Shrubs, 5–15 or 20–150(–200) cm, aromatic; root-sprouting (caudices with adventitious buds, fibrous rooted). Stems pale gray, glabrous. Leaves deciduous, gray-green; blades broadly cuneate, 1.5–4 × 0.5–2 cm, deeply 3-lobed (lobes 1–1.4 mm wide, acute; cauline leaves smaller, mostly 3-lobed). Heads in paniculiform or spiciform arrays (5–)8–15(–35) × (0.5–)1–5 cm. Involucres globose or turbinate, 2–4 × 1.5–3 mm. Phyllaries broadly lanceolate (margins scarious, obscured by indument), canescent. Florets 3–11; corollas 2–2.5 mm, glandular (style branches included). Cypselae (columnar, unequally ribbed) 1.8–2.3 mm, glabrous or resinous.

Distribution

V19-881-distribution-map.gif

B.C., Idaho, Nev., Oreg., Wash., Wyo.

Discussion

Subspecies 2 (2 in the flora).

Selected References

None.

Key

1 Shrubs 20–150(–200) cm; lobes of leaves linear, to 0.5 mm wide; loamy soils, w of continental divide Artemisia tripartita subsp. tripartita
1 Shrubs 5–15 cm; lobes of leaves lanceolate, 1–1.5 mm wide; stony grasslands, e Wyoming Artemisia tripartita subsp. rupicola
... more about "Artemisia tripartita"
Leila M. Shultz +
Rydberg +
Artemisia trifida +
Three-tipped sagebrush +
B.C. +, Idaho +, Nev. +, Oreg. +, Wash. +  and Wyo. +
Mem. New York Bot. Gard. +
Illustrated +  and Endemic +
Artemisia tridentata subsp. trifida +  and Seriphidium tripartitum +
Artemisia tripartita +
Artemisia subg. Tridentatae +
species +