Artemisia campestris

Linnaeus

Sp. Pl. 2: 846. 1753.

Common names: Field sagewort sand wormwood
Illustrated
Treatment appears in FNA Volume 19. Treatment on page 506. Mentioned on page 505, 508.

Biennials or perennials, (10–) 30–80 (–150) cm, faintly aromatic; taprooted, caudices branched. Stems usually 1–5, turning reddish-brown, (often ribbed) tomentose or glabrous. Leaves persistent or deciduous, mostly basal; basal blades 4–12 cm, cauline gradually reduced, 2–4 × 0.5–1.5 cm, 2–3-pinnately lobed, lobes linear to narrowly oblong, apices acute, faces densely to sparsely white-pubescent. Heads (pedunculate) in (mostly leafless) paniculiform arrays. Involucres broadly turbinate, 2.5–3 (–5) × 2–3.5 (–7) mm. Phyllaries (margins scarious) glabrous or villous-tomentose. Florets: pistillate 5–20; functionally staminate 12–30; corollas pale-yellow, sparsely hairy or glabrous. Cypselae oblong-lanceoloid, somewhat compressed, 0.8–1 mm, faintly nerved, glabrous.

Distribution

V19-852-distribution-map.gif

Alta., B.C., Man., N.B., Nunavut, Ont., Que., Sask., Alaska, Ariz., Ark., Calif., Colo., Conn., Fla., Idaho, Ill., Ind., Iowa, Kans., Maine, Mass., Mich., Minn., Miss., Mo., Mont., N.C., N.Dak., N.H., N.J., N.Mex., N.Y., Nebr., Nev., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tex., Utah, Vt., Wash., Wis., Wyo., especially mountains and high latitudes, Eurasia

Discussion

Subspecies ca. 7 (3 in the flora).

Artemisia campestris varies; each morphologic form grades into another. The present circumscription is conservative in that only three subspecies are recognized; the subspecies usually can be separated geographically as well as morphologically. Populations in western North America consist primarily of subsp. pacifica; east of the continental divide, plants are assigned to subsp. canadensis in northern latitudes and to subsp. caudata in southern latitudes.

Selected References

None.

Key

1 Perennials; stems 2–5; basal rosettes persistent Artemisia campestris subsp. pacifica
1 Biennials; stems 1(–3); basal rosettes not persistent (withering before flowering) > 2
2 Involucres globose, 3–4 × 3.5–5 mm; n of 50°, primarily Canada Artemisia campestris subsp. canadensis
2 Involucres turbinate, 2–3 × 2–3 mm; s of 50°, e from Rocky Mountains to coastal North America Artemisia campestris subsp. caudata
... more about "Artemisia campestris"
not tailed +  and obtuse +
scarious +
paniculiform +
indeterminate +  and determinate +
Leila M. Shultz +
Linnaeus +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
decurrent +
compound +  and simple +
entire;toothed;3-lobed;entire;toothed;3-lobed;lobed;spatulate;flabellate;spatulate;flabellate;cuneate;obovate;oblanceolate;oblong;elliptic;ovate;lanceolate;linear;filiform +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Field sagewort +  and sand wormwood +
zygomorphic +, actinomorphic +  and (3-)5-merous +
glabrous +  and hairy +
compressed +  and oblong-lanceoloid +
fertile +  and bisexual +
fertile +  and bisexual +
Alta. +, B.C. +, Man. +, N.B. +, Nunavut +, Ont. +, Que. +, Sask. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Fla. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Maine +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, N.C. +, N.Dak. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, Nebr. +, Nev. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tex. +, Utah +, Vt. +, Wash. +, Wis. +, Wyo. +, especially mountains and high latitudes +  and Eurasia +
gland-dotted +
white-pubescent +
staminate +  and pistillate +
winged +  and beaked +
dispersed +
spiciform +  and racemiform +
in subcapitate clusters +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
sessile +  and petiolate +
deciduous +  and persistent +
linear +  and narrowly oblong +
entire +  and dentate +
2-carpellate +
persistent +
villous-tomentose +  and glabrous +
2 +  and 20 +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
conic;convex;conic;convex;flat +
2 +  and 5 +
exalbuminous +
Illustrated +
reddish-brown +
1 +  and 5 +
wand-like +
appendaged +  and truncate +
papillate +
Compositae +
Artemisia campestris +
Artemisia subg. Drancunculus +
species +
funnel +  and subglobose +
cylindric +
80 cm800 mm <br />0.8 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
perennial +  and biennial +
30 cm300 mm <br />0.3 m <br /> (80 cm800 mm <br />0.8 m <br />) +
taprooted +  and fibrous-rooted +