Flora of North America species comparison

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Artemisia pontica

armoise de la mer noire, green-ginger, roman wormwood
Habit 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).
Involucres

spheric, 1.5–2(–3) mm.
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).
Phyllaries

(subequal) linear, hairy.
Heads

(nodding) in paniculiform arrays 10–22 × 2–4 cm.
Cypselae

ellipsoid (angled), 0.1–0.2 mm, glabrous.
2n

= 18.

Artemisia pontica
Phenology Flowering late summer–fall.
Habitat Disturbed areas, valleys, shaded thickets
Elevation 100–500 m (300–1600 ft)
Distribution
from FNA
CT; DE; IL; KY; MA; MD; ME; MI; MN; NH; NJ; NY; OH; PA; RI; VT; WI; MB; NS; ON; QC; Eurasia [Introduced in North America]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 531.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia
Sibling taxa
A. abrotanum, A. absinthium, A. alaskana, A. aleutica, A. annua, A. arbuscula, A. biennis, A. bigelovii, A. borealis, A. californica, A. campestris, A. cana, A. carruthii, A. douglasiana, A. dracunculus, A. filifolia, A. franserioides, A. frigida, A. furcata, A. globularia, A. glomerata, A. laciniata, A. longifolia, A. ludoviciana, A. michauxiana, A. nesiotica, A. norvegica, A. nova, A. packardiae, A. palmeri, A. papposa, A. pattersonii, A. pedatifida, A. porteri, A. pycnocephala, A. pygmaea, A. rigida, A. rothrockii, A. rupestris, A. scopulorum, A. senjavinensis, A. serrata, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
Name authority Linnaeus: Sp. Pl. 2: 847. (1753)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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