Artemisia tridentata subsp. parishii

(A. Gray) H. M. Hall & Clements

Publ. Carnegie Inst. Wash. 326: 137. 1923.

Common names: Mojave sagebrush
Basionym: Artemisia parishii A. Gray Proc. Amer. Acad. Arts 17: 220. 1882
Synonyms: Artemisia tridentata var. parishii (A. Gray) Jepson Seriphidium tridentatum subsp. parishii (A. Gray) W. A. Weber
Treatment appears in FNA Volume 19. Treatment on page 517. Mentioned on page 516.

Shrubs, 100–200 (–300) cm (crowns rounded). Vegetative branches interspersed among flowering-stems. Leaves cuneate or lanceolate (1–) 1.5–2 (–2.5) × 0.1–0.3 cm, usually 3-lobed, sometimes entire. Heads in paniculiform arrays 15–30 × 2–6 cm (branches widely spreading or drooping). Involucres 2–4 × 1–2 mm. Florets 3–7. Cypselae hairy or glabrous. 2n = 36.


Phenology: Flowering mid summer–late fall.
Habitat: Loose sandy soils of valleys and foothills
Elevation: 300–1800 m

Distribution

V19-878-distribution-map.gif

Ariz., Calif., Nev., Utah, Mexico (Baja California)

Discussion

Subspecies parishii is found in coastal ranges in southern California and Baja California, and inland to areas south of the Great Basin. It has been distinguished traditionally by the presence of drooping flowering branches and hairy cypselae, characteristics found on the type specimen. These characteristics occur sporadically in populations of other subspecies throughout the warm desert regions of southern California, Nevada, and Utah; the characteristically longer leaves and distinctive aroma support recognition of this subspecies. This treatment is the first to include Mojave Desert, Owens Valley, and Colorado Plateau populations within subsp. parishii.

Selected References

None.

Lower Taxa

None.
not tailed +  and obtuse +
scarious +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Leila M. Shultz +
(A. Gray) H. M. Hall & Clements +
decurrent +
Artemisia parishii +
compound +  and simple +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
3-lobed;cuneate +
0.1cm;0.7cm +
Mojave sagebrush +
zygomorphic +, actinomorphic +  and (3-)5-merous +
red +  and pale-yellow +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
winged +  and monomorphic +
glabrous +  and hairy +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Calif. +, Nev. +, Utah +  and Mexico (Baja California) +
300–1800 m +
gland-dotted +
pistillate +, staminate +  and neuter +
fertile +  and bisexual +
winged +  and beaked +
dispersed +
Loose sandy soils of valleys and foothills +
spiciform +  and racemiform +
in subcapitate clusters +  and singly +
indeterminate +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
heterogamous +  and homogamous +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
each +  and sessile +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
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 />) +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
sessile +  and petiolate +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
gray-green +
persistent +
1.5cm;2cm +
cauline +  and basal +
3-lobed;lanceolate;cuneate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
deltate +
entire +  and dentate +
2-carpellate +
persistent +
Flowering mid summer–late fall. +
2 +  and 20 +
Publ. Carnegie Inst. Wash. +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
conic;convex;conic;convex;flat +
2 +  and 5 +
exalbuminous +
Illustrated +
gray-brown +
1 +  and 10 +
not wand-like +
appendaged +  and truncate +
papillate +
Artemisia tridentata var. parishii +  and Seriphidium tridentatum subsp. parishii +
Artemisia tridentata subsp. parishii +
Artemisia tridentata +
subspecies +
funnel +  and subglobose +
cylindric +
perennial +, biennial +  and annual +