9. Tribe ANTHEMIDEAE

744
Pochv.-Bot. Otryada Kazakhstansk. Eksped. Akad. Nauk
S.S.S.R. 4(2): 269. 1930.
Herbs perennial, 8–15(–30) cm tall, with a thick rootstock,
densely white arachnoid tomentose, sometimes partly glabrescent.
Lower stem leaves: petiole short; leaf blade ovate, 1–2(–3)
× 0.8–1 cm, 1- or 2-pinnatisect; segments 3 or 4 pairs; lobules
linear, 2–3 × 0.3–0.5 mm. Middle and upper stem leaves pinnatisect;
leaflike bracts linear. Synflorescence a lax, somewhat
broad panicle. Involucre oblong-ovoid or ovoid, 1.5–3 mm in
diam.; phyllaries keeled, white arachnoid pubescent. Florets 4
or 5. Achenes obovoid or ovoid. Fl. and fr. Aug–Oct.
Dunes, desert margins, Gobi Desert; low or middle elevations. N
Xinjiang [Kazakhstan, Mongolia].
19. Seriphidium semiaridum (Krascheninnikov & Lavrova) Y.
Ling & Y. R. Ling, Bull. Bot. Res., Harbin 8(3): 118. 1988.
半凋萎绢蒿 ban diao wei juan hao
Artemisia terrae-albae Krascheninnikov subsp. semiarida
Krascheninnikov & Lavrova in Krylov, Fl. Zapadnoi Sibiri 11:
2787. 1949; A. semiarida (Krascheninnikov & Lavrova) Filatova;
A. terrae-albae var. semiarida (Krascheninnikov & Lavrova)
Poljakov.
Herbs, perennial, 20–30 cm tall, densely gray tomentose,
later partly glabrescent. Lower stem leaves: petiole 3–10 mm;
leaf blade ovate-elliptic, 1–2(–3) × 1–1.5 cm, 1- or 2-pinnatisect;
segments (3 or)4 or 5 pairs; lobules linear or linear-lanceolate,
2–4 × 0.3–0.5 mm. Middle stem leaves pinnatisect;
leaflike bracts linear. Synflorescence a narrow conical panicle.
Involucre ovoid-oblong or ovoid-ellipsoid, 1.5–2.5 mm in
diam.; phyllaries densely gray tomentose. Florets 3–5. Achenes
ovoid or obovoid. Fl. and fr. Aug–Oct.
Desert and semidesert steppes, saline-alkaline soils; low to middle
elevations. N Xinjiang [Kazakhstan].
20. Seriphidium heptapotamicum (Poljakov) Y. Ling & Y. R.
Ling, Bull. Bot. Res., Harbin 8(3): 119. 1988.
半荒漠绢蒿 ban huang mo juan hao
Artemisia heptapotamica Poljakov, Bot. Mater. Gerb.
Glavn. Bot. Sada R.S.F.S.R. 18: 278. 1957; A. terrae-albae
Krascheninnikov var. heptapotamica (Poljakov) Poljakov.
Herbs, perennial, 20–35(–40) cm tall, with a thick rootstock,
densely gray arachnoid tomentose, later partly glabrescent.
Lower and middle stem leaves: petiole short; leaf blade
oblong-ovate or ovate-elliptic, 2–2.5 × 1–1.5 cm, 2-pinnatisect
(1(or 2)-pinnatisect in middle leaves); segments 3 or 4(or 5)
pairs; lobules linear, 3–5 × 0.3–0.5 mm, acute apically. Upper
leaves and leaflike bracts pinnatisect or entire. Synflorescence a
somewhat broad and elongated panicle. Involucre oblong or
ovoid, 1.5–2.5 mm in diam.; phyllaries sparsely arachnoid pubescent.
Florets 3 or 4. Achenes ovoid or obovoid. Fl. and fr.
Aug–Oct.
Semidesert and desert steppes; 800–1500 m. N Xinjiang [Kazakhstan].
ANTHEMIDEAE
21. Seriphidium sublessingianum (Krascheninnikov ex Poljakov)
Poljakov, Trudy Bot. Inst. Akad. Nauk Kazakhsk. S.S.R.
11: 174. 1961.
针裂叶绢蒿 zhen lie ye juan hao
Artemisia sublessingiana Krascheninnikov ex Poljakov,
Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 16:
395–396. 1954; A. gorjaevii Poljakov; A. polysthicha Poljakov;
A. sublessingiana var. gorjaevii (Poljakov) Poljakov; A. sublessingiana
var. polysthicha (Poljakov) Poljakov.
Subshrubs, 30–45 cm tall, gray arachnoid puberulent; nonflowering
stems developing fibrous brownish bark. Lowermost
leaves: petiole 1–2(–2.5) cm; leaf blade oblong-ovate or ovate,
3–4 × 1–2 cm, 2-pinnatisect; segments 3 or 4(or 5) pairs;
lobules narrowly linear, 5–12 × 0.3–0.5 mm, subacuminate.
Middle stem and uppermost leaves sessile, 1(or 2)-pinnatisect
with palmatisect, sometimes pinnatisect, auricles; leaflike bracts
pinnatisect or 3- or 5-lobed, or entire. Capitula sessile, in narrow
or somewhat broad and elongated panicles. Involucre cylindric-ovoid
or ellipsoid-ovoid, 3–4 × 1–2 mm; phyllaries gray
tomentose, later glabrescent. Florets 2–7(–8). Achenes ovoid or
obovoid. Fl. and fr. Aug–Oct.
Rocky slopes, Gobi Desert, dry valleys, semidesert steppes, dunes;
800–1300 m. N Xinjiang [Kazakhstan, Mongolia, Russia].
Poljakov (Fl. URSS 26: 596–597. 1961) recognized two further
varieties of Artemisia sublessingiana: var. gorjaevii, with slender
erect stems usually 20–30 cm tall and short narrowly linear leaf lobes,
and var. polysthicha, with lower stem leaves not more than 2 cm and
often 3 stigmatic lobes.
“Artemisia maritima Linnaeus [var.] sublessingiana” (Keller,
Bot.-Geogr. Issledov. Zaisansk. Semipalatinsk. Obl. 2: 89. 1912) belongs
here but is a nomen nudum and was therefore not validly published
(Vienna Code, Art. 32.1(d)).
22. Seriphidium amoenum (Poljakov) Poljakov, Trudy Bot.
Inst. Akad. Nauk Kazakhsk. S.S.R. 11: 174. 1961.
小针裂叶绢蒿 xiao zhen lie ye juan hao
Artemisia amoena Poljakov, Bot. Mater. Gerb. Bot. Inst.
Komarova Akad. Nauk S.S.S.R. 16: 421. 1954.
Subshrubs, 5–25(–35) cm tall, with a thick rootstock, gray
arachnoid pubescent, later glabrescent. Lower stem leaves: petiole
short; leaf blade ovate or oblong-ovate, 4–8 × 1.5–2(–2.5)
cm, 1(or 2)-pinnatisect; segments 3 or 4(or 5) pairs, occasionally
middle of lateral lobes 3-lobed; lobules or lobes narrowly
linear or narrowly linear-lanceolate, 4–12 × 1–2.5 mm, mucronulate
apically. Middle stem leaves pinnatisect; lobes narrowly
linear. Upper leaves and leaflike bracts narrowly linear, 4–5 mm.
Synflorescence a narrow spikelike panicle. Involucre oblongovoid
or oblong, 1.5–2 mm in diam.; phyllaries cyst-form, gray
pubescent. Florets 4 or 5. Achenes ovoid or obovoid. Fl. and fr.
Aug–Oct.
● Rocky slopes, Gobi Desert, saline-alkaline soils; low elevations
to 1500 m. N Xinjiang.
Seriphidium amoenum contains the anthelmintic α-santonin.