Artemisia cana
Artemisia rothrockii
dwarf sagebrush, hoary sagebrush, silver sagebrush, silver wormwood, sticky sagebrush
Rothrock sagebrush, sticky sagebrush, timberline sagebrush
light brown to gray-green (woody, somewhat pliable, leafy), persistently canescent to glabrescent.
white (becoming dark gray with age), canescent (bark exfoliating).
deciduous, whitish gray or green to dark gray-green;
blades narrowly elliptic to lanceolate, 1.5–8 × 0.2–1 cm, usually entire, sometimes irregularly lobed, sparsely to densely hairy.
persistent, light or dark gray-green;
blades long-cuneate to lanceolate, (0.4–)1–1.5(–2) × 0.2–0.4 cm, 3-lobed (lobes to 1/3 blade lengths, rounded, margins sometimes entire, somewhat wavy), faces densely to sparsely canescent, gland-dotted, sticky-resinous.
(subtended by green, leaflike bracts) narrowly to broadly campanulate, 3–4 × 2–5 mm.
broadly ovoid, 3–5 × 4–6 mm.
4–20;
corollas 2–3 mm, resinous (style branches ellipsoid, to 2.3 mm, exsert, gland-dotted).
12–20;
corollas 2.5–3.5 mm.
ovate or lanceolate (scarious margins nearly invisible), densely canescent.
(usually gray-green) ovate, densely or sparsely canescent.
in (congested, leafy) paniculiform arrays 10–20 × 0.2–7 cm.
(erect, sessile or pedunculate) in paniculiform arrays, 5–15 × 1–2(–3) cm.
(light brown) 1–2.3 mm, resinous.
0.8–2 mm, (smooth), resinous.
= 36, 54, 72.
Artemisia cana
Artemisia rothrockii
Subspecies 3 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Artemisia rothrockii is known only from the central and southern Sierra Nevada and the White Mountains of California. In the Rocky Mountains, A. spiciformis has been confused with A. rothrockii. Distinctive chemistry and anatomical structure of the leaves support the distinctness of A. rothrockii (L. M. Shultz 1986b). Intermediate characteristics suggest a hybrid origin from races of A. cana and A. tridentata.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Shrubs 100–150 cm; leaves 2–8 cm (entire); primarily e of continental divide | subsp. cana |
1. Shrubs 50–90 cm; leaves 1.5–4 cm (usually some with irregular lobes); w of continental divide | → 2 |
2. Stems felty-tomentose; leaves green to gray-green; involucres 4–5 mm diam.; California, Nevada, Oregon | subsp. bolanderi |
2. Stems hairy (not felty-tomentose); leaves green to dark green; involucres 2–3(–4) mm diam.; Arizona, Colorado, Idaho, Montana, Nevada, New Mexico, Utah, Wyoming | subsp. viscidula |
OR
WA
CalFlora
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
