9. Tribe ANTHEMIDEAE

Two species: China, Mongolia; two species in China.
ANTHEMIDEAE
Oberprieler et al. (in Kadereit & C. Jeffrey, Fam. Gen. Vasc. Pl. 8: 349, 357, 364. 2007) accepted Elachanthemum as a distinct genus on the basis
of the smooth pollen, which placed it in a different group of genera from Stilpnolepis.
1a. Capitula 8–20 mm in diam., nodding or declined; phyllaries abaxially glabrous, without midrib; lateral leaf
segments grouped at leaf base ....................................................................................................................................... 1. S. centiflora
1b. Capitula 5–6 mm in diam.; phyllaries abaxially floccose, with green midrib; lateral leaf segments uniformly
distributed along leaf ...................................................................................................................................................... 2. S. intricata
1. Stilpnolepis centiflora (Maximowicz) Krascheninnikov, Bot.
Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 9: 209.
1946.
百花蒿 bai hua hao
Artemisia centiflora Maximowicz, Bull. Acad. Imp. Sci.
Saint-Pétersbourg 26: 493. 1880; A. centiflora var. pilifera
Y. Ling; Stilpnolepis centiflora var. pilifera (Y. Ling) H. C. Fu.
Herbs, annual, ca. 40 cm tall, with robust fusiform taproots;
stems erect, striate, corymbosely branched in upper part,
pubescent. Leaves sessile; leaf blade narrowly lanceolate to linear,
3.5–10 × 0.2–0.4 cm, pinnatisect, both surfaces sparsely
pubescent; lateral segments 2- or 3-paired, crowded at base of
leaf, stipulelike, short, linear; terminal segments linear, long.
Synflorescence a lax, flat-topped cyme. Capitula nodding or
declined; peduncle 1.5–3 cm. Involucre cupular-hemispheric,
0.8–2 cm in diam.; phyllaries in 4 or 5 rows, scarious margin
broad, outer phyllaries broadly ovate, ca. 7 mm, middle and inner
ones ovate or broadly obovate, ca. as long as outer ones or
somewhat shorter. Florets many, bisexual, fertile, yellow, 5lobed,
with distinct tube and bowl-shaped limb. Achenes narrowly
obovoid-triangular, 5–6 mm, densely glandular, inconspicuously
striate. Pappus absent.
Millefolium Miller; Ptarmica Miller.
167. ACHILLEA Linnaeus, Sp. Pl. 2: 896. 1753.
蓍属 shi shu
759
Dunes; 1100–1300 m. Gansu, Nei Mongol, Ningxia, Shaanxi
[Mongolia].
2. Stilpnolepis intricata (Franchet) C. Shih, Acta Phytotax. Sin.
23: 471. 1985.
紊蒿 wen hao
Artemisia intricata Franchet, Nouv. Arch. Mus. Hist. Nat.,
sér. 2, 6: 50. 1883; Elachanthemum intricatum (Franchet) Y.
Ling & Y. R. Ling; ?E. intricatum var. macrocephalum H. C.
Fu.
Herbs, annual, with robust taproots; stems much branched
from base, reddish or yellow-brown, sparsely pubescent. Leaves
sessile; leaf blade elliptic or broadly ovate, 1–3 × 0.5–1.5 cm,
pinnatisect, both surfaces sparsely pubescent; lateral segments
3-paired, linear; distal leaves 3–5-divided or entire. Synflorescences
racemelike, forming lax panicle. Capitula pedunculate.
Involucres hemispheric, 5–6 mm in diam.; phyllaries in 3–5
rows, ovate or broadly ovate, equal or outer ones somewhat
shorter, with green midvein, abaxially sparsely pilose, scarious
margin hyaline. Florets many, bisexual, yellow, 5-lobed, with a
distinct tube and cupular limb. Achenes obliquely obovoid, 10–
20-striate. Fl. and fr. Sep–Oct.
Deserts, steppes; 1300–1400 m. Gansu, Nei Mongol, Ningxia,
Qinghai, Xinjiang [Mongolia].
Shi Zhu (石铸 Shih Chu); Christopher J. Humphries, Michael G. Gilbert
Herbs, perennial, usually rhizomatous; indumentum of basifixed or sometimes submedifixed hairs. Leaves alternate, pinnatilobed
to pinnatisect, rarely entire. Synflorescences cymose, usually ± flat-topped panicles, rarely capitula few together or solitary.
Capitula relatively small, heterogamous, radiate, rarely homogamous and discoid. Involucres oblong, ovoid, or hemispheric; phyllaries
in 2 or 3 rows, scarious margins brown- or yellowish white. Receptacle flat to convex, conical or rarely much elongated, paleate.
Marginal florets in 1 row, female, fertile; lamina white, pink, red, or yellow, rather short and wide, occasionally absent. Disk
florets yellow or pink, bisexual, corolla tubular, apex 5-lobed, ± winged, flattened, basally slightly saccate around achene especially
adaxially. Anther bases obtuse, apical appendage lanceolate. Achenes dorsiventrally flattened with 2 lateral ribs. Corona absent.
About 200 species: mostly in Europe and temperate Asia; 11 species (one endemic, one introduced) in China.
Achillea sibirica Ledebour subsp. subcartilaginea Heimerl (Denkschr. Kaiserl. Akad. Wiss., Wien. Math.-Naturwiss. Kl. 48(2): 188. 1884; A.
subcartilaginea (Heimerl) Heimerl, Acta Horti Gothob. 12: 254. 1938), described from Japan and reported from Shaanxi (Giraldi 2943; Limpricht
2803), may be a form of A. alpina. The taxon was not mentioned in Fl. URSS (26. 1961) or Rast. Tsentral. Azii (14a. 2007).
1a. Leaves entire, margin serrulate.
2a. Leaves glabrous; ray floret lamina ca. 7 × 5 mm; paleae yellow villous at apex ................................................ 4. A. acuminata
2b. Leaves densely pubescent, depressed gland-dotted; ray floret lamina 3.2–3.5 × 3–3.8 mm; paleae white
villous at apex ........................................................................................................................................................ 5. A. salicifolia
1b. Leaves pinnately to tripinnately divided.
3a. Leaves pinnately divided.