1. | Leaves simple, undivided, entire or serrate. |
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2. | Leaves serrate with incurved gland tipped teeth, glabrous above, glandular hairy beneath. |
| Artemisia amygdalina |
2. | Leaves without serrations, glabrous on both sides. |
| Artemisia dracunculus |
1. | Leaves shallowly to deeply, 1-3 times divided. |
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3. | Disc-florets functionally male, with rudimentary ovaries; styles shorter than the corolla. |
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4. | Basal and lower stem leaves oblong-obovate to flabellate, mostly cuneate to incised dentate at the apices. |
| Artemisia japonica |
4. | Basal and lower stem leaves ovate-orbicular, or oblong-elliptic to broadly ovate, deeply dissected pinnately or palmately or upper leaves simple and occasionally lower 3-5-cleft. |
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5. | Leaves, when undissected, or leaf segments usually more than (1-) 1.5 mm wide. |
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6. | Leaves mostly simple, entire, occasionally lower 3-5-cleft. Florets more than 20 per capitulum. |
| Artemisia dracunculus |
6. | Leaves twice or thrice pinnatipartite or pinnatisect. Florets less than 20 per capitulum. |
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7. | Leaves with white dots on the upper surface, densely grayish hairy to glabrescent below, ultimate leaf segments 2 mm or more wide. Panicle 10 cm or more wide. |
| Artemisia dubia |
7. | Leaves not white-dotted on the upper surface, glabrous on both sides, ultimate leaf segments less than 2 mm wide. |
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8. | Plants 50 – 80 (-90) cm tall. Capitula 2.5 – 3 mm long. |
| Artemisia desertorum |
8. | Plants 20 – 40 (-50) cm tall. Capitula 3 – 4 mm long, phyllaries glaucous. |
| Artemisia salsoloides |
5. | Leaf segments usually less than 1 mm wide. |
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9. | Annual or biennial herbs with procumbent to ascending , up to 20 (-30) cm tall stems. Panicle very narrowly pyramidate, c. 1.5 – 2 cm wide, with up to 4 cm long suberect branches. |
| Artemisia stricta |
9. | Biennial or perennial, with usually more than 30 cm tall stems. Panicle broadly pyramidate, with more than 5 cm long branches. |
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10. | Leaf segments linear-lanceolate, 3 – 4 (-5) mm long, 0.5 – 1 mm wide. |
| Artemisia scoparia |
10. | Leaf segments filiform, 8 – 12 mm long, 0.3 – 0.5 mm wide. |
| Artemisia capillaris |
3. | Disc-florets fertile, with well-developed ovaries, styles as long as or longer than the corolla. |
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11. | Receptacle densely to obscurely hairy, sometimes glabrescent to glabrous. |
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12. | Plants more than 30 cm tall. Capitula numerous, in narrow to broadly pyramidate panicle. |
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13. | Leaves triangular-ovate. Capitula 6 – 7 (-8) mm across. |
| Artemisia sieversiana |
13. | Leaves oblong-obovate or broadly ovate or oblong-ovate or orbicular to oblate or flabellate. Capitula 3-5 mm across. |
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14. | Lower leaves with more than 1.5 (up to 10) cm long petioles; lamina broadly ovate or oblong-ovate, with 2 – 4 mm broad ultimate segments. |
| Artemisia absinthium |
14. | Lower leaves with up to 1.5 cm long petioles; lamina oblong-obovate or orbicular to oblate or flabellate. |
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15. | Leaf blades orbicular to oblate or flabellate. Panicle oblong, 3-4 cm wide. |
| Artemisia rutifolia |
15. | Leaf blades oblong-obovate. Panicle ± oblong-pyramidate, 8 – 12 cm wide. |
| Artemisia persica |
12. | Plants less than 30 cm tall. Capitula up to 30, in simple racemes. |
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16. | Leaf petioles 4 – 5 mm long. Leaf blades flabellate, 4 – 6 mm long, 6 – 8 mm wide. Peduncles long. |
| Artemisia minor |
16. | Leaf petioles 10 – 15 mm long. Leaf blades 10 – 15 mm long and broad. Peduncles very short. |
| Artemisia macrocephala |
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17. | Ultimate leaf segments 2 mm or more wide. |
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18. | Panicle broadly pyramidate, usually 10 cm or more wide. |
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19. | Leaves with white dots on the upper surface. |
| Artemisia dubia |
19. | Leaves not white-dotted on the upper surface. |
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20. | Capitula 3 – 4 x c. 2 mm, lax in almost leafless panicle. Phyllaries glabrous, externally shiny. |
| Artemisia elegantissima |
20. | Capitula 3 – 4 x c. 2 mm, dense and compact in leafy panicle. Phyllaries grayish-arachnoid hairy, externally not shiny. |
| Artemisia vulgaris |
18. | Panicle narrowly pyramidate, usually up to 10 cm or less wide. |
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23. | Capitula sessile, approximate, erect, congested in oblong, 1.5 – 5 cm wide, strict, contracted panicle with closely ascending to erect-appressed spicate branches. |
| Artemisia biennis |
23. | Capitula shortly peduncled, lax, nodding in narrow to broadly pyramidate, more than 5 cm wide, lax panicle with spreading or ascending branches. |
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24. | Annaul, simple, sparsely puberulous stemmed herb. Leaves glabrous on both sides. |
| Artemisia annua |
24. | Perennial, with several stems from the base. Leaves densely hairy on both sides or sparsely hairy to glabrous above and laxly to densely hairy beneath. |
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25. | Leaves oblong-obovate or orbicular to oblate or flabellate, densely sericeous or grayish hairy on both sides. Disc-floret corollas long hairy at apices. |
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26. | Leaves oblong-obovate, grayish hairy, tripinnatisect with 1.5 – 2.5 mm long ultimate segments. Capitula 3 – 3.5 mm long and broad. |
| Artemisia persica |
26. | Leaves orbicular to oblate or flabellate, palmately bipinnatisect into 2 – 12 mm long ultimate segments. Capitula 3.5 – 5 mm long and broad. |
| Artemisia rutifolia |
25. | Leaves oblong-elliptic or oblong-ovate to broadly triangular-ovate, sparsely hairy or glabrous and green above with pitted glands, laxly to densely arachnoid hairy beneath. Disc-floret corollas not hairy at the apices. |
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27. | Leaves exauriculate at the base. Phyllaries almost glabrous. |
| Artemisia laciniata |
27. | Leaves auriculate at the base. Phyllaries strigose or sparsely hairy. |
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28. | Lower leaves bipinnatisect. Capitula 2.5 – 3 mm across; outrmost phyllaries triangular-ovate, narrowly scarious margined, acute. |
| Artemisia gmelinii |
28. | Leaves narrowly tripinnatisect. Capitula 3 – 5 mm across; outermost phyllaries linear-oblong, not scarious-margined. |
| Artemisia santolinifolia |
17. | Ultimate leaf segments less than 1.5 mm wide. |
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22. | Capitula 4 – 4.5 x 4 – 6 mm. Corolla of disc-florets apically sparsely hairy. Cypselas 1.75 – 2 mm long. |
| Artemisia moorcroftiana |
22. | Capitula 3 – 4 x 2 – 3 mm. Corolla of disc-florets completely glabrous. Cypselas c. 1.25 mm long. |
| Artemisia roxburghiana |
21. | Panicle 5 – 10 cm broad, with obliquely patent to ascending, more than 4 cm long branches. Phyllaries glabrous. |
| Artemisia incisa |
21. | Panicle 2 – 3 cm broad, with 2.5 – 4 cm long, erect to ± patent branches. Phyllaries sparsely to densely arachnoid hairy outside. |
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22. | Capitula 4 – 4.5 x 4 – 6 mm. Corolla of disc-florets apically sparsely hairy. Cypselas 1.75 – 2 mm long. |
| Artemisia moorcroftiana |
22. | Capitula 3 – 4 x 2 – 3 mm. Corolla of disc-florets completely glabrous. Cypselas c. 1.25 mm long. |
| Artemisia roxburghiana |