Artemisia pontica

Linnaeus

Sp. Pl. 2: 847. 1753.

Common names: Roman wormwood green-ginger armoise de la mer Noire
Introduced
Treatment appears in FNA Volume 19. Treatment on page 531. Mentioned on page 522, 532.

Perennials, 40–100 cm, somewhat aromatic; rhizomes creeping, woody. Stems relatively numerous, erect, brown, mostly simple (brittle, bases woody) canescent or glabrate. Leaves cauline, grayish green; sessile (proximalmost short-petiolate); blades triangular to ovate, 1–5 × 1–3 cm, 2–3-pinnatifid (lobes 0.5–1 mm wide, acute), faces pubescent (abaxial) or hairy to glabrate (adaxial). Heads (nodding) in paniculiform arrays 10–22 × 2–4 cm. Involucres spheric, 1.5–2 (–3) mm. Phyllaries (subequal) linear, hairy. Florets: pistillate 10–12; bisexual 40–45; corollas pale-yellow, 0.2–0.3 mm, sometimes gland-dotted (stigma lobes relatively short, not emerging from tubes, short-ciliate). Cypselae ellipsoid (angled), 0.1–0.2 mm, glabrous. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Disturbed areas, valleys, shaded thickets
Elevation: 100–500 m

Distribution

V19-922-distribution-map.gif

Introduced; Man., N.S., Ont., Que., Conn., Del., Ill., Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., Ohio, Pa., R.I., Vt., Wis., Eurasia

Discussion

Artemisia pontica has finely dissected gray foliage and is widely planted as an ornamental. It escapes locally; it has not been reported as problematic. The only species with which it has been confused in North America is A. abrotanum, which has dark green (not gray) foliage.

Selected References

None.

Lower Taxa

None.
... more about "Artemisia pontica"
not tailed +  and obtuse +
scarious +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Leila M. Shultz +
Linnaeus +
decurrent +
compound +  and simple +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
2-3-pinnatifid;triangular;ovate +
1cm;3cm +
fertile +  and bisexual +
Roman wormwood +, green-ginger +  and armoise de la mer Noire +
zygomorphic +, actinomorphic +  and (3-)5-merous +
gland-dotted +  and pale-yellow +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
winged +  and monomorphic +
ellipsoid +
fertile +  and bisexual +
fertile +  and bisexual +
Man. +, N.S. +, Ont. +, Que. +, Conn. +, Del. +, Ill. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, Vt. +, Wis. +  and Eurasia +
100–500 m +
gland-dotted +
hairy +  and glabrate +
peripheral +
winged +  and beaked +
dispersed +
Disturbed areas, valleys, shaded thickets +
spiciform +  and racemiform +
in subcapitate clusters +  and singly +
indeterminate +
10 cm100 mm <br />0.1 m <br /> (22 cm220 mm <br />0.22 m <br />) +
heterogamous +  and homogamous +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
each +  and sessile +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
grayish green +
persistent +  and deciduous +
deltate +
entire +  and dentate +
2-carpellate +
persistent +
Flowering late summer–fall. +
2 +  and 20 +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
conic;convex;conic;convex;flat +
2 +  and 5 +
exalbuminous +
Introduced +
wand-like +
appendaged +  and truncate +
papillate +
Artemisia sect. Abrotanum +
Artemisia pontica +
Artemisia subg. Artemisia +
species +
funnel +  and subglobose +
cylindric +
fibrous-rooted +  and taprooted +
40 cm400 mm <br />0.4 m <br /> (100 cm1,000 mm <br />1 m <br />) +
shrub +  and subshrub +