Flora of North America species comparison

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Artemisia suksdorfii

Artemisia rupestris

coastal mugwort, coastal wormwood, Suksdorf sagewort, Suksdorf's mugwort, Suksdorf's sagewort, Suksdorf's wormwood

sagebrush
Habit Perennials, 50–170(–200) cm, aromatic (rhizomes woody, coarse). Perennials, 5–15(–25) cm (cespitose), faintly aromatic.
Stems

usually 10+, erect, light brown, simple, usually glabrous.

brownish purple, glabrous.
Leaves

cauline (sessile), bicolor (white and dark green);

blades lanceolate, 5–10(–15) × 1–5 cm (bases strongly tapered, attenuate), coarsely and irregularly lobed, faces tomentose (abaxial) or glabrous (adaxial).

deciduous, bright green;

blades (proximalmost petiolate) ovate, 1.5–5 × 1–2.5 cm, 2–3-pinnately lobed (cauline sessile, ternately or pinnately lobed, terminal lobes lance-linear, 1–6 × 0.5–1 mm), faces glabrous or sparsely hairy, glandular.
Involucres

narrowly turbinate or globose, 1.5–2.5 × 1–1.5 mm.

globose, 4–5(–7) × 4–5(–7) mm.
Florets

pistillate 2–5;

bisexual 2–7;

corollas yellow, 1.5–3 mm, glabrous.

pistillate 14–16 (glandular, style branches exsert, linear, spreading);

bisexual 40–70;

corollas 1.5–2 mm, glabrous or glandular (styles shorter than corollas).
Phyllaries

(straw-colored to yellow-green, shiny) lanceolate, glabrous or sparsely hairy.

green (margins light green), ± hairy.
Heads

(erect) in crowded (proximally leafy), paniculiform or racemiform arrays 17–30 × (2–)4–5 cm (lateral branches stiff, erect).

(5–9, pedunculate or sessile, spreading or drooping) in spiciform arrays 3–9 × 0.5–1 cm.
Cypselae

ellipsoid, 0.8–1.5 mm, glabrous.

ca. 1 mm (apices flat), glabrous.
2n

= 18.

Artemisia suksdorfii

Artemisia rupestris
Phenology Flowering mid summer–fall. Flowering late summer–fall.
Habitat Coastal habitats, often along roads or drainages Steppes, alkaline meadows, stony slopes
Elevation 0–200 m (0–700 ft) 0–1400 m (0–4600 ft)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
YT; Asia
[BONAP county map]
Discussion

Artemisia suksdorfii is similar morphologically to A. douglasiana; it has more and smaller heads, and glabrous phyllaries. The two species hybridize where their ranges overlap.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

The sole North American occurrence of Artemisia rupestris in southwestern Yukon is a remarkable disjunction from the Asiatic range of this species.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 19, p. 533. FNA vol. 19, p. 520.
Parent taxa Asteraceae > tribe Anthemideae > Artemisia > subg. Artemisia Asteraceae > tribe Anthemideae > Artemisia > subg. Absinthium
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. pontica, A. porteri, A. pycnocephala, A. pygmaea, A. rigida, A. rothrockii, A. rupestris, A. scopulorum, A. senjavinensis, A. serrata, A. spiciformis, A. stelleriana, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
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. pontica, A. porteri, A. pycnocephala, A. pygmaea, A. rigida, A. rothrockii, A. scopulorum, A. senjavinensis, A. serrata, A. spiciformis, A. stelleriana, A. suksdorfii, A. tilesii, A. tridentata, A. tripartita, A. vulgaris
Synonyms A. heterophylla, A. vulgaris var. littoralis Absinthium viridifolium var. rupestre, A. rupestris subsp. woodii
Name authority Piper: Bull. Torrey Bot. Club 28: 42. (1901) 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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