203 



442. ANACYCLUS. 



3. tomentosus. L. bipinuatipartite. Lobes 

 lineari-subtilate. Fl.-stalks cylindi-ical. Rays 

 oblong, wMte. a. 9, 10. Sandy fields, s. Fr. 

 Italy. 



4. radiatus. L. bipinuatipartite. Lobes 

 lineari-subulate (erect. Teeth of Fits, awned, 

 Guss.). Rays oblong, yelloio on loth sides. 

 a. 5, 6. Fields. s.Fr. It. 



j3. purpurascens. Rays externally purpUsli. 



5. pallescens. Lower L. pubescent, bipin- 

 natifid ; upper nearly smooth, pinnatifid. 

 Segm. of all lineari-lanceolate and somewhat 

 incise. Fl.-stalks long, erect. Teeth of Fits. 

 not awned. Chaff cuneiform, mucronate, quite 

 smooth, a. 6, 7- Grassy sliores. Cefalu. 



6. valentinus. L. villous, bipinuatipar- 

 tite. Lobes linear. Rays very small and in- 

 conspicuous, a. 6, 7. Fields, s. Fr. 



443. ACHILLEA. 



A. Rays about 1 0. Ligules (z. e., the ex- 

 panded part of the radiant florets) as long 

 as the calyx. 



i. Flowers in a corymb. 



a. L. undivided. Sp. 1-5. 



b. L. pinnatifid, but not with a distinct 

 linear inline. Sp. 6-10. 



c. L. pinnatifid, with a linear inline. 

 Sp. 11-16. 



ii. Stem 1-flowered. Sp. 16, 17. 



B. Rays about 5. Ligules about half as long 

 as calyx. 



i. Flowers not yellow. 



a. L. piimate or pinnatifid, with linear 

 inline. 



* Rachis entire. Sp. 18-23. 



** Rachis toothed. Sp. 24, 25. 



b. L. pinnatifid, without linear inline. 

 Sp. 26, 27. 



ii. Flowers yellow. Sp. 28. 



A. Hays about 10. Ligule (i.e., expanded 

 •part of floret) as long as calyx, white. 

 Ptarmica, DC. Seeds often somewhat 

 winged. 



i. Mowers in a corymb. 

 a. L. undivided. 

 1. Herba-rota. L. sessile, narrow cuneate, 

 generally with a few simple serratures at top. 

 Corymb simple, few-flowered. Cal. ovate. 

 Chaff smooth, p. 7, 8. High pastures. Dau. 

 Piedmont. 



2. cristata. Stem much branched. L. 

 linear, flat, acuminate, dentate. Teeth emar- 

 ginate and ciliato-serrate. Corymb simple. 



• Cal. nearly globose, p. It. ? 



3. Ptarmica. Stem erect. L. hairless, 

 lineari- or oblongo-lanceolate, sharply, closely, 

 and equally serrate. Coi-jTiib panicled. Cal. 

 neai'ly hemispherical. Chaff downy, p. 7, 8. 

 Hoist meadows and pastures. 



/8. pubescens. Stem and L. pubescent, short. 



7. linearis. L. naiTow linear. 



4. decolorans. Erect, hau-y. L. lanceo- 

 late, acutely dupKcato-serrate. Corymb com- 

 pound. Cal. hemispherical. Rays about 6, 

 yellowish. Ligules hardly as long as calyx. 

 p. 8, 9. Matlock. Temple Cloud, Somerset. 



5. serrata. Stems simple, ascending, vel- 

 vety. L. tomentose, lineari-lanceolate, pinna- 

 tifid. Lobes oblong, obtuse. Corymb some- 

 what compound. Cal. campanulate. Chaff 

 oblong, somewhat hairy, rufous at top. Alps ? 

 Not now found. 



b. L. pinnatifid or pectinate, but not with 

 a clear linear inline or rachis. 



6. alpina. Smooth. Stem erect, branched. 

 L. lanceolate, acuminate, serrato-pinnatifid. 

 Lobes acute, serrate. Corymb compound. Cal. 

 somewhat campanulate. Chaff dentate, rufous 

 at top. p. 6, 7. Pyr. Savoy. St. Gothard. 



7. macrophylla. Stem nearly smooth, 

 erect, terete, simple. L. pinnatipartite : out- 

 line elliptic. Lobes approximate, lanceolate, 

 incise, and unequally serrate : upper confluent. 

 Corymb compound. Chaff ovate, dark green 

 on the tip. p. 7, 8. Alps, not rare. 



8. valesiaca. Somewhat hirsute. L. pin- 

 natipartite. Rachis with a broad and nearly 

 entire wing. Lobes 5-10 on each side, approxi- 

 mate, cuneato-lanceolate, inciso-dentate. Co- 

 rymb somewhat compound. Chaff broad at top, 

 erose, rufous, p. 7, 8. At som-ce of Rhone. 



9. thomasiana. Stem erect, pubescenti- 

 vUlous. L. neaiiy smooth, pinnatipartite. Ra- 

 chis quite entire. Lobes distant, cuneate, end- 

 ing in 2 or 3 mucronate teeth. Root-L. bi- 

 pinnatifid. Corymb simple. Chaff brown at 

 the tips. p. 7, 8. Monte Bovohnaz in upper 

 VaUais. 



10. Clavennse. Hoary. Hairs adpressed. 

 Stems erect, simple. Root-L. stalked, pinna- 

 tifid : outline obovato-cuneate. Segm. oblong, 

 obtuse. Stem-L. sessUe, divided from base. 



