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"
not tailed +  and obtuse +
scarious +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Leila M. Shultz +
Rydberg +
decurrent +
Artemisia trifida +
compound +  and simple +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
3-lobed;cuneate +
0.5cm;2cm +
Three-tipped sagebrush +
zygomorphic +, actinomorphic +  and (3-)5-merous +
red +  and pale-yellow +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
winged +  and monomorphic +
fertile +  and bisexual +
fertile +  and bisexual +
B.C. +, Idaho +, Nev. +, Oreg. +, Wash. +  and Wyo. +
gland-dotted +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
fertile +  and bisexual +
winged +  and beaked +
dispersed +
spiciform +  and paniculiform +
in subcapitate clusters +  and singly +
15 cm150 mm <br />0.15 m <br /> (35 cm350 mm <br />0.35 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
indeterminate +
8 cm80 mm <br />0.08 m <br /> (15 cm150 mm <br />0.15 m <br />) +
heterogamous +  and homogamous +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
each +  and sessile +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
turbinate;globose +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
sessile +  and petiolate +
gray-green +
deciduous +
cauline +  and basal +
deltate +
entire +  and dentate +
2-carpellate +
persistent +
2 +  and 20 +
Mem. New York Bot. Gard. +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
conic;convex;conic;convex;flat +
2 +  and 5 +
exalbuminous +
Illustrated +  and Endemic +
1 +  and 10 +
not wand-like +
appendaged +  and truncate +
papillate +
Artemisia tridentata subsp. trifida +  and Seriphidium tripartitum +
Artemisia tripartita +
Artemisia subg. Tridentatae +
species +
funnel +  and subglobose +
cylindric +
perennial +, biennial +  and annual +
shrub +  and root-sprouting +