9. Tribe ANTHEMIDEAE

9. Artemisia xerophytica Krascheninnikov, Bot. Mater. Gerb.
Glavn. Bot. Sada R.S.F.S.R. 3: 24. 1922.
内蒙古旱蒿 nei meng gu han hao
Shrubs, dwarf, caespitose, 30–40 cm tall, with thick woody
roots, rootstocks, and branches, densely gray or yellowish sericeous,
glabrescent at base; stems brown or brownish. Leaves ±
leathery. Middle stem leaves: petiole 3–5 mm; leaf blade ovate
or suborbicular, 1–1.5 × 0.4–0.6 cm, 2-pinnatisect, segments 2
or 3 pairs, distal lobes 3–5-lobulate; lobules narrowly spatulate,
linear, or linear-oblanceolate, 1–3 × 0.5–1.5 mm. Uppermost
leaves and leaflike bracts sessile, pinnatisect or 3–5-lobed. Synflorescence
a panicle. Capitula shortly pedunculate. Involucre
subglobose, 3.5–4.5 mm in diam.; phyllaries yellowish pubescent;
receptacle pubescent. Marginal female florets 4–10. Disk
florets 10–20, bisexual; corolla limb puberulent. Achenes obovoid-oblong.
Fl. and fr. Aug–Oct.
Gobi Desert, semidesert steppes, dunes; 1700–3500 m. N Gansu,
Nei Mongol, Ningxia, N Qinghai, N Shaanxi, N Xinjiang [Mongolia].
Artemisia xerophytica is used in windbreaks and for sand stabilization.
It is also an important source of herbage for livestock.
10. Artemisia rutifolia Stephen ex Sprengel, Syst. Veg. 3: 488.
1826.
香叶蒿 xiang ye hao
Subshrubs or shrubs, caespitose, 20–80 cm tall, strongly
aromatic, silky puberulent, glabrescent; rootstock woody, much
branched, 1.5–2.5 cm thick. Stem branches 20–30 cm. Lower
and middle stem leaves: petiole 0.3–1 cm; leaf blade suborbicular
or reniform, 0.5–2 × 0.8–3 cm, 2-ternately lobed or nearly 2palmatisect;
segments 1 or 2 pairs; lobules narrowly elliptic-oblanceolate
or elliptic-lanceolate, 6–12 × 1–1.5 mm, recurved or
flat. Uppermost leaves and leaflike bracts palmatisect, 3-lobed,
or entire. Synflorescence a racemelike panicle, ± oblong, 15–20
× 3–4 cm; branches 4–6(–8) cm, obliquely erect. Capitula pedunculate,
nodding. Involucre globose or subglobose, 3–9 mm
in diam.; receptacle with deciduous paleaceous hairs. Florets
15–40, yellow, pinkish tinged; corolla glandular and hairy. Marginal
female florets 5–10; corolla narrowly tubular, 2-toothed.
Disk florets (10–)12–15(–28), bisexual; corolla limb puberulent
or glabrescent. Achenes ellipsoid-obovoid, ca. 1.25 mm. Fl. and
fr. Jul–Oct.
Hills, dry river valleys, basins, steppes, semideserts, Gobi Desert;
1300–5000 m. Nei Mongol, Qinghai, Xinjiang, Xizang [Afghanistan,
Kazakhstan, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan;
SW Asia].
1a. Involucre 4–9 mm in diam. ........... 10c. var. ruoqiangensis
1b. Involucre 3–4 mm in diam.
2a. Leaves reniform or
semiorbicular, 10–20 mm,
lobules recurved .............................. 10a. var. rutifolia
2b. Leaves suborbicular, 5–10 mm,
lobules flat ........................................ 10b. var. altaica
10a. Artemisia rutifolia var. rutifolia
香叶蒿(原变种) xiang ye hao (yuan bian zhong)
Artemisia falconeri C. B. Clarke; A. turczaninoviana Bes-
ANTHEMIDEAE
681
ser; A. turczaninoviana var. dasyantha Schrenk; A. turczaninoviana
var. falconeri (C. B. Clarke) O. Fedtschenko.
Leaf blade reniform or semiorbicular, 1–2 cm; lobules recurved.
Involucre 3–4 mm in diam.
Hills, dry river valleys, basins, steppes; 1300–5000 m. Qinghai,
Xinjiang, Xizang [Afghanistan, Kazakhstan, Kyrgyzstan, Mongolia,
Nepal, Pakistan, Russia, Tajikistan; SW Asia].
10b. Artemisia rutifolia var. altaica (Krylov) Krascheninnikov
in Krylov, Fl. Zapadnoi Sibiri 11: 2789. 1949.
阿尔泰香叶蒿 a er tai xiang ye hao
Artemisia turczaninoviana var. altaica Krylov, Fl. Altai 3:
61. 1904.
Leaf blade suborbicular, 5–10 × 5–10 mm; lobules flat,
strict. Involucre 3–4(–5) mm in diam.
Semideserts, Gobi Desert. E and N Xinjiang [W Mongolia].
10c. Artemisia rutifolia var. ruoqiangensis Y. R. Ling, Guihaia
12: 312. 1992.
诺羌香叶蒿 nuo qiang xiang ye hao
Leaf blade suborbicular, 5–10 × 5–10 mm; lobules recurved.
Involucre 4–9 mm in diam.
● Semidesert steppes, Gobi Desert; 3100–4200 m. SE Xinjiang
(Ruoqiang).
11. Artemisia obtusiloba Ledebour, Fl. Altaic. 4: 68. 1833.
钝裂蒿 dun lie hao
Herbs, perennial, caespitose, 10–35 cm tall, with woody
rootstocks and branches, shortly branched or not, densely gray
pubescent, glabrescent, purple or brown. Leaves and phyllaries
densely pubescent, sometimes glabrescent; leaves usually glanddotted.
Middle stem leaves sessile, with pseudostipules; leaf
blade oblong, broadly ovate, or obovate, 0.3–2 × 0.2–1.5(–1.7)
cm, 1- or 2-pinnatisect and panduratisect; segments 2–4 pairs,
distal lobes falcate, usually 3–5-palmatisect; lobules linear, linear-lanceolate,
or elliptic-lanceolate, 1.5–6 × 0.5–1.5 mm, rarely
lacerate, apex obtuse. Uppermost leaves and leaflike bracts pinnatisect
or entire. Synflorescence a ± narrow spikelike panicle.
Capitula sessile. Involucre globose or broadly ovoid, 1.5–3(–4)
mm in diam.; phyllaries yellowish pubescent; receptacle pubescent
or glabrous. Marginal female florets 6–12. Disk florets 15–
30, bisexual; corolla limb puberulent or glabrescent. Achenes
ellipsoid. Fl. and fr. Jul–Aug.
Dry hills, semidesert steppes, roadsides, saline-alkaline soils,
rocky slopes, canyons; below 1700 m. N Xinjiang [Kazakhstan, Mongolia,
Russia].
Krasnoborov (Fl. Sibir. 13: 138–140. 1997) recognized four subspecies
within Artemisia obtusiloba, the typical subspecies plus three
further subspecies endemic to Siberia: A. obtusiloba subsp. altaica
(Krascheninnikov) Krasnoborov, A. obtusiloba subsp. martjanovii
(Krascheninnikov ex Poljakov) Krasnoborov, and A. obtusiloba subsp.
subviscosa (Turczaninow ex Besser) Krasnoborov.
1a. Receptacle pubescent; leaf blade
0.6–2 × 0.5–1.5(–1.7) cm .................... 11a. var. obtusiloba