Artemisia ludoviciana subsp. albula

(Wooton) D. D. Keck

Proc. Calif. Acad. Sci., ser. 4, 25: 446. 1946.

Common names: White wormwood
Basionym: Artemisia albula Wooton Contr. U.S. Natl. Herb. 16: 193. 1913,
Treatment appears in FNA Volume 19. Treatment on page 528. Mentioned on page 527.

Stems 30–80 cm, widely branched, tomentose or glabrous. Leaves uniformly whitish green; blades lance-linear (and entire), or obovate to elliptic (with antrorse teeth or lobes to 1/3 blade lengths, usually 1–2 cm, margins revolute), faces ± tomentose. Heads in open, paniculiform arrays (9–) 15–40 × (4–) 8–30 cm. Involucres 1–2 × 2–3 mm. Florets: pistillate 8–11; bisexual 8–13; corollas 1–1.5 mm.


Phenology: Flowering early summer–fall.
Habitat: Desert drainages, sandy soils
Elevation: 1500–2000 m

Distribution

V19-910-distribution-map.gif

Ariz., Calif., Colo., Nev., N.Mex., Tex., Utah, Mexico

Discussion

Selected References

None.

Lower Taxa

None.
54 +, 36 +  and 18 +
not tailed +  and obtuse +
scarious +
paniculiform +  and open +
9 cm90 mm <br />0.09 m <br /> (15 cm150 mm <br />0.15 m <br />) +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
indeterminate +  and determinate +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
8cm +  and 30cm +
Leila M. Shultz +
(Wooton) D. D. Keck +
decurrent +
Artemisia albula +
compound +  and simple +
elliptic +  and linear to broadly +
1.5 cm15 mm <br />0.015 m <br /> (11 cm110 mm <br />0.11 m <br />) +
obovate;elliptic +
0.5cm;4cm +
fertile +  and bisexual +
White wormwood +
zygomorphic +, actinomorphic +  and (3-)5-merous +
red-tinged +  and yellow +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
winged +  and monomorphic +
ellipsoid +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +, Tex. +, Utah +  and Mexico +
1500–2000 m +
gland-dotted +
peripheral +
winged +  and beaked +
dispersed +
Desert drainages, sandy soils +
spiciform +  and racemiform +
in subcapitate clusters +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
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 /> (0.8 cm8 mm <br />0.008 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
turbinate;campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
sessile +  and petiolate +
whitish green +
persistent +  and deciduous +
deltate +
entire +  and dentate +
2-carpellate +
persistent +
Flowering early summer–fall. +
2 +  and 20 +
Proc. Calif. Acad. Sci., ser. +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
conic;convex;conic;convex;flat +
2 +  and 5 +
exalbuminous +
Illustrated +
gray-green +
relatively few +  and relatively numerous +
wand-like +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
appendaged +  and truncate +
papillate +
Artemisia vulgaris var. ludoviciana +
Artemisia ludoviciana subsp. albula +
Artemisia ludoviciana +
subspecies +
funnel +  and subglobose +
cylindric +
fibrous-rooted +  and taprooted +
20 cm200 mm <br />0.2 m <br /> (80 cm800 mm <br />0.8 m <br />) +
shrub +  and subshrub +