9. Tribe ANTHEMIDEAE
9. Tribe ANTHEMIDEAE
9. Tribe ANTHEMIDEAE
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<strong>ANTHEMIDEAE</strong><br />
14b. Lower and middle stem leaves more than 2.5 cm; branches ascending.<br />
16a. Stem arachnoid tomentose; lower leaves broadly ovate or<br />
ovate-oblong, middle stem leaf lobules 2–4 mm .......................................... 1. S. schrenkianum<br />
16b. Stem densely tomentose or pubescent, later partly glabrescent; lower<br />
leaves elliptic-ovate or ovate-oblong, middle stem leaf lobules more<br />
than 5 mm.<br />
17a. Stem, branches, leaves, and phyllaries arachnoid tomentose or<br />
pubescent, but stem and phyllaries glabrescent at anthesis;<br />
branches more and spreading; capitula ellipsoid or oblong,<br />
in broad or somewhat broad panicles .................................................... 5. S. mongolorum<br />
17b. Stem, branches, leaves, and phyllaries arachnoid pubescent or<br />
tomentose, hairs present or glabrescent in lower stem at anthesis;<br />
branches from middle to above on stem; capitula oblong,<br />
oblong-ovoid, or ovoid, in somewhat broad, elongated,<br />
or narrow panicles.<br />
18a. Middle stem leaves (1 or)2-pinnatisect, lobules 1–1.5 mm<br />
wide; capitula 2–2.5 mm in diam., in narrow or somewhat<br />
broad panicles ........................................................................................ 4. S. finitum<br />
18b. Middle stem leaves 2- or 3-pinnatisect, lobules 0.5–1mm<br />
wide; capitula 1–2 mm in diam., at upper part of stem in<br />
somewhat broad panicles.<br />
19a. Rootstock thick, lower bark peeling; middle stem<br />
leaves pinnatisect, segments 4 or 5 pairs; phyllaries<br />
strongly convex .................................................................... 2. S. transiliense<br />
19b. Root solitary, lower bark not peeling; middle stem<br />
leaves (2 or)3-pinnatisect, segments 5 or 6 pairs;<br />
phyllaries ± flat ....................................................................... 7. S. sawanense<br />
11b. Lowermost leaves 1- or 2-pinnatisect, middle stem leaves 1- or 2-pinnatisect.<br />
20a. Capitula 2–2.5 mm; branches from middle part of stem, spreading, 10–15 cm; panicles<br />
broad, conical ...................................................................................................................... 16. S. ferganense<br />
20b. Capitula less than 3 mm in diam.; branches from upper part of stem, less than 10 cm,<br />
or if from lower stem then short or more than 10 cm; panicles broad or narrow.<br />
21a. Middle stem leaves pinnatisect, segments 1 or 2(or 3) pairs; phyllaries and<br />
florets deciduous after anthesis .............................................................................. <strong>9.</strong> S. kaschgaricum<br />
21b. Middle stem leaves 1-pinnatisect, or 2-pinnatisect and then with segments<br />
(2 or)3–5; phyllaries and florets persistent after anthesis.<br />
22a. Stems many and thickly caespitose, branches 2–3(–5) cm, ascending; lobes<br />
and lobules of leaves deciduous or nearly deciduous.<br />
23a. Branches from middle part of stem, ascending; leaves persistent after<br />
anthesis; middle stem leaves with 3 or 4 pairs of segments, lobes or<br />
lobules needlelike, more than 3 mm, central lobes 4–12 mm.<br />
24a. Stem 30–45 cm tall, branches 2–4(–5) cm; lowermost leaves<br />
2-pinnatisect, middle stem leaves 1- or 2-pinnatisect;<br />
capitula in narrow or somewhat broad panicles .................. 21. S. sublessingianum<br />
24b. Stem 5–25(–35) cm tall, branches 1–2(–3) cm; lower leaves<br />
1(or 2)-pinnatisect, middle stem leaves 1(or 2)-pinnatisect;<br />
capitula in narrow, spikelike panicles ............................................ 22. S. amoenum<br />
23b. Branches from upper part of stem, spreading or ascending; leaves<br />
deciduous or semideciduous after anthesis; middle stem leaves with<br />
2–5 pairs of segments, central lobes 2–3 mm.<br />
25a. Stem, branches, and leaves densely tomentose or pubescent;<br />
leaves with (3 or)4 or 5 pairs of segments, semideciduous after<br />
anthesis; capitula in dense narrow pyramidal panicles ............... 1<strong>9.</strong> S. semiaridum<br />
25b. Stem, branches, and leaves densely arachnoid tomentose or<br />
pubescent; leaves with 3 or 4(or 5) pairs of segments, deciduous<br />
after anthesis; capitula in loose somewhat broad panicles on<br />
upper stem.<br />
26a. Branches from upper stem, 2–3(–5) cm; lower leaves<br />
ovate, 1–2(–3) × 0.8–1 cm; capitula in loose somewhat<br />
broad panicles .................................................................... 18. S. terrae-albae<br />
739
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