Subshrubs, (20-)40-150(-200) cm tall, with branched, woody rhizome; all parts densely to sparsely puberulent or tomentose, sparser with age, sometimes glabrescent. Leaves sessile or subsessile; basal leaf blades entire or 2- or 3-lobed at tip. Middle stem leaves linear-lanceolate, elliptic-lanceolate, or linear, (1.5-)3-7(-10) × (0.1-)0.2-0.6(-1) cm, entire or with apex 3-partite or -cleft, or with 1(or 2) small lateral lobes. Uppermost leaves and leaflike bracts linear or lanceolate, 5-30 × 1-2 mm. Synflorescence a broad to racemelike leafy panicle; branches ascending to erect, sometimes appressed, to 10 cm. Capitula remote to approximate, nodding; peduncles curved, to 5 mm. Involucre subglobose, ovoid, or hemispheric, 2-5 mm in diam.; phyllaries glabrescent, scarious margin broad, outer phyllaries oblong or lanceolate, inner orbicular-oblong. Marginal female florets 6-10[-15]; corolla 0.5-1 mm, glandular, 2-fid. Disk florets 4-14, male; corolla campanulate, 2-2.5, 5-lobed. Achenes obovoid or obovoid-ellipsoid. Fl. and fr. Jul-Oct. 2n = 18, 36, 54, 72, 90.
Perennials or subshrubs, 50–120(–150) cm, strongly tarragon-scented or not aromatic; rhizomatous, caudices coarse. Stems relatively numerous, erect, green to brown or reddish brown, somewhat woody, glabrous. Leaves: proximal blades bright green and glabrous or gray-green and sparsely hairy, 5–8 cm; cauline blades bright green (gray-green in desert forms), linear, lanceolate, or oblong, 1–7 × 0.1–0.5(–0.9) cm, mostly entire, sometimes irregularly lobed, acute, usually glabrous, sometimes glabrescent (deserts). Heads in terminal or lateral, leafy, paniculiform arrays 15–45 × 6–30 cm; appearing ball-like on slender, sometimes nodding peduncles. Involucres globose, 2–3 × 2–3.5(–6) mm. Phyllaries (light brown, broadly lanceolate, membranous): margins broadly hyaline, glabrous. Florets: pistillate 6–25; functionally staminate 8–20; corollas pale yellow, 1.8–2 mm, eglandular or sparsely glandular. Cypselae oblong, 0.5–0.8 mm, faintly nerved, glabrous. 2. = 18.
"Fibrous-rooted perennial 5–15 dm, the stems clustered on short, coarse rhizomes or a branching caudex; herbage glabrous or occasionally villous-puberulent; lvs narrowly linear to lance-linear, 3–8 cm × 1–6 mm, mostly entire, but occasionally some 2–5-cleft, the lower generally deciduous before flowering; infl paniculiform, usually open and ample; invol glabrous or nearly so, 2–3 mm; disk-fls sterile; achenes ellipsoid, nerveless; 2n=18. Dry open places; Ill. to Man. and Tex., s. to Yukon, B.C., and n. Mex.; also in Eurasia. July–Sept. (A. cernua; A. dracunculoides; A. glauca)"
Perennial, strongly aromatic to inodorous, 20-100 (-150) cm tall herb, with erect or ascending, costate-striate, greenish-yellow, sparsely hairy to glabrous stems. Leaves short stalked to sessile, mostly undivided, occasionally lower 3-5-cleft, usually glabrous, sometimes sparsely appressed canescent, linear-lanceolate to occasionally ± oblanceolate, 2-8 cm x (1-) 2-8 (-10) mm, entire, acute; upper ones mostly simple, much reduced in floral region. Capitula numerous, heterogamous, globose, 2-3 x 3-4 mm, remote to approximate, nodding on curved, 1-2 mm long, hairy or glabrous peduncles, in leafy, narrow panicle with ascending to erect, sometimes appressed, up to 10 cm long branches. Involucre 3-seriate, phyllaries glabrous, outermost oblong, c. 2.5 x 1 mm, obtuse, inner ones broadly elliptic, c. 3.5 x 2 mm, broadly whitish scarious, obtuse. Receptacle conico-hemispherical, glabrous. Florets up to 40, yellow; marginal-florets 6-15, fertile, with 0.5-1 mm long, glandulose, 2-fid corolla; disc-florets 10-20, bisexual, sterile, with campanulate, 2-2.5 mm long, 5-toothed corolla. Cypselas brown, ellipsoid, 0.6-1 mm long.
60–120(–150) cm hoch, aromatisch, kahl. Blätter ungeteilt, schmal-lanzettlich, ganzrandig, 2–10 cm lang und 2–8 mm breit, mit verschmälertem Grund sitzend. Blütenköpfe kurz gestielt oder sitzend, nickend, Durchmesser 2–3 mm, mit grünlich-
|Assenzio dragoncello, Estragone||Italian||CH|