9. Tribe ANTHEMIDEAE

24. Artemisia macrantha Ledebour, Mém. Acad. Imp. Sci. St.
Pétersbourg Hist. Acad. 5: 573. 1815.
亚洲大花蒿 ya zhou da hua hao
Subshrubs or herbs, 20–100 cm tall, with woody rootstock
and branches, densely white pubescent. Branches 8–18 cm.
Lower and middle stem leaves: leaf blade ovate or oblong, 4–8
× 2–7 cm, 2(or 3)-pinnatisect; segments (3 or)4 or 5 pairs,
lobules minute, linear or linear-lanceolate, serrate, teeth 3–5(–8)
× 0.5(–1) mm, apex acute, sometimes falcately curved. Uppermost
leaves and leaflike bracts pinnatisect or entire; lobes or
entire leaves linear-lanceolate and longer than those of flowering
branches. Synflorescence a ± narrow panicle. Involucre
subglobose or hemispheric, 4–7 mm in diam.; phyllaries with
scarious margin brown; receptacle convex. Marginal female
florets 10–20. Disk florets 30–38 or more, bisexual; corolla limb
puberulent. Achenes ellipsoid-ovoid. Fl. and fr. Aug–Oct. 2n =
108.
Canyons, steppes, meadows, shrublands, waysides; low elevations
to 1500 m. W Nei Mongol, E Xinjiang [Kazakhstan, Kyrgyzstan, Mongolia,
Russia, Tajikistan, Turkmenistan, Uzbekistan; SW Asia].
25. Artemisia pontica Linnaeus, Sp. Pl. 2: 847. 1753.
西北蒿 xi bei hao
Subshrubs or herbs, 30–60(–100) cm tall, with woody
rootstock and basal branches, densely pubescent, or stem glabrescent,
much branched. Basal leaves in rosettes. Leaves abaxially
sparsely pubescent; basal and lower stem leaves: leaf
blades ovate or broadly ovate, 2–5 × 1.5–3 cm, 2- or 3-pinnatisect.
Middle stem leaves 2-pinnatisect; segments 3 or 4 pairs;
lobules elliptic or linear, 3–5 × 0.5–1 mm, obtuse apically. Uppermost
leaves and leaflike bracts pinnatisect or entire; lobes of
entire leaves linear or linear-lanceolate. Synflorescence a ± narrow
panicle. Capitula many, nodding. Involucre globose, 2.5–
3(–3.5) mm in diam. Marginal female florets 8–12. Disk florets
30–40, bisexual; corolla limb puberulent or later glabrescent.
Achenes obovoid. Fl. and fr. Jul–Oct. 2n = 18.
Rocky slopes, dry valleys, steppes, hills; low to middle elevations.
ANTHEMIDEAE
27a. Leaf blade 0.3–0.7 × 0.2–0.5 cm .............. 11. A. obtusiloba (see A. sect. Absinthium)
27b. Leaf blade 2–10 × 0.7–8 cm.
28a. Lobules of middle stem leaves entire, apex obtuse ...................... 25. A. pontica
28b. Lobules of middle stem leaves serrate or pectinate, apex acute.
29a. Middle stem leaves abaxially yellow arachnoid
pubescent, lobules linear or narrowly lanceolate;
capitula with 40–60 disk florets .............................. 29. A. stechmanniana
29b. Middle stem leaves abaxially gray pubescent, often
glabrescent, lobules serrate or pectinate; capitula
with 12–40 disk florets.
30a. Middle stem leaves triangular or elliptic-ovate in
outline, lobules with triangular teeth; phyllaries
puberulent or glabrescent; capitula with 20–40
disk florets ................................................................. 28. A. gmelinii
30b. Middle stem leaves ovate, elliptic-ovate, or
suborbicular in outline, lobules deeply serrate;
phyllaries densely pubescent; capitula with
12–20 disk florets ........................................................ 30. A. vestita
687
Gansu, Ningxia, E and N Xinjiang [Kazakhstan, Russia; C and E Europe,
North America].
26. Artemisia polybotryoidea Y. R. Ling, Bull. Bot. Res., Harbin
5(2): 1. 1985.
甘新青蒿 gan xin qing hao
Herbs, perennial, caespitose, 50–60 cm tall, with woody
rootstock and branches, much branched. Leaves abaxially glabrescent
or puberulent, gland-dotted; middle stem leaves: petiole
2.5–3.5 cm; leaf blade ovate or elliptic, 4–5.5 × 2.5–3.5 cm,
3(or 4)-pinnatisect; segments 5–8 pairs; lobules minute, pectinate
or shortly linear, 1–3 × (0.5–)1–1.5 mm; rachis serrate,
occasionally serrulate; midrib obviously prominent abaxially.
Uppermost leaves and leaflike bracts 2- or 3-pinnatisect. Synflorescence
of many axillary conical to cylindric panicles
forming large compound panicle. Capitula many. Involucre globose,
4–5 mm in diam.; phyllaries glabrescent. Marginal female
florets 8–12. Disk florets 25–35, bisexual. Achenes obovoid. Fl.
and fr. Aug–Oct.
● Hills, waysides; 1000–1500 m. Gansu, Xinjiang.
27. Artemisia aksaiensis Y. R. Ling, Bull. Bot. Res., Harbin
5(2): 3. 1985.
阿克塞蒿 a ke sai hao
Herbs or subshrubs, caespitose, 40 cm tall or more, with
woody rootstock and branches, gray puberulent or sparsely puberulent
or glabrescent, much branched. Leaves gland-dotted.
Lower and middle stem leaves: petiole 1–2 cm; leaf blade
ovate, 2–2.5 × 1.5–2 cm, 2(or 3)-pinnatisect; segments 3(or 4)
pairs; lobules minute, elliptic or ovate, 3 or 4 pairs, 2–4 × 1–1.5
mm, occasionally with 1 or 2 teeth. Uppermost leaves and leaflike
bracts 1- or 2-pinnatisect. Synflorescence a broad panicle.
Capitula peduncle 5–15 mm, rarely less than 4 mm. Involucre
hemispheric or globose, 5–8 mm in diam.; phyllaries white puberulent.
Marginal female florets 6–11. Disk florets 12–18, bisexual.
Achenes obovoid. Fl. and fr. Aug–Oct.
● Hills; 3100–3800 m. W Gansu.