76 
A. tinctoria. Ox-eye Chamomile. Fig. 75L 
Stem erect, corymbose, cottony. Leaves bipinnatifid, with serrated 
segments, downy beneath. Dry fields ; rare. 1-l^ft. Bierin. ? July 
and Aug. Yellow, (f) £.£.1. 1472. £.£.2.1181. H.fyArn. 254. 
Bab. 174. Lind. 150. 
Genus 49. Achillea. 
A. Ptarmica. Sneeze-wort. Goose-wort. Fig. 752. 
Leaves linear-lanceolate, minutely serrated. Corymbs flat. Moist 
pastures. 1-2 ft. Perenn. July and Aug. White. (•§■) E. B. 1. 
757. E.B. 2.1182. H. fy Am. 254. Bab. 175. Lind. 151. 
A. serrata. Fig. 753. 
Leaves linear-lanceolate, downy, deeply serrated. Corymbs nearly 
simple. Near Matlock, Derby. 1 ft. Perenn. Aug. Pale yellow. 
(§) E.B. 1. 2531. E. B. 2.1183. H. Am. 255. Bab. 175. 
Lind. 151. 
A. Millefolium. Yarrow. Milfoil. Fig. 754. 
Stems furrowed. Leaves bipinnatifid, hairy; segments linear. 
Pastures and way-sides ; very common. 1-2 ft. Perenn. June-Aug. 
White, (f) E.B. 1. 758. £'.£.2.1184. II. fyAm. 255. Bab. 176. 
Lind. 151. 
A. tomentosa. Golden Milfoil. Fig. 755. 
Leaves woolly, pinnatifid; segments linear. Dry hill-pastures ; not 
common. 6-8 in. Perenn. May-Oct. Golden yellow, (f) E.B. 1. 
2532. E.B. 2.1185. H.fy Am. 255. Bab. 175. Lind. 151. 
Genus 50. Centaurea. 
C. Jacea. Brown Knapweed. Fig. 750. 
Leaves linear-lanceolate ; those of the root broader. Scales of invo- 
lucrum pinnatifid, dark brown. 2-3 ft. Perenn. Aug. and Sept. 
Bright purple. (|J E.B. 1. 1678. £'.£.2.1186. H.fy Am. 234 
Bab. 185. Lind. 155. 
C. nigra. Black Knapweed. Fig. 757. 
Lower leaves somewhat lyrate ; upper ovate-lanceolate. Scales of 
involucrum pectinated, black. Pastures and way-sides ; very common. 
2-3 ft. Perenn. June-Sept. Purple. (^) £'.£.1. 278. E.B. 2. 
1187. H. fy Am. 235. Bab. 186. Lind. 155. 
C. Cyanus. Corn-flower. Blue-bottle. Fig. 758. 
Leaves linear-lanceolate. Scales of involucrum serrated. Flowers 
radiant. Corn-fields ; very common. 2-3 ft. Ann. July and Aug. 
Inner florets purple, outer brilliant blue, (f) E. B. 1. 277. E.B. 2. 
1188. II. Am. 236. Bab. 186. Lind. 155. 
C. Scabiosa. Great Knapweed. Fig. 759. 
Leaves pinnatifid, with lanceolate segments. Flowers radiant. 
Scales of involucrum ovate, rather downy. Corn-fields and pastures. 
2-3 ft. Perenn. July and Aug. Purple. (■§■) £'.£.1.56. E.B. 2. 
1189. H. Am. 235. Bab. 186. Lind. 155. 
C. Isnardi. Jersey Star-Thistle. Fig. 760. 
Leaves somewhat pinnatifid, the lobes spiny. Scales of involucrum 
with palmated spines. Channel Islands. 1 ft. Perenn. July and 
Aug. Pale purple, (f) E. B. 1. 2256. E. B. 2.1190. H.fyArn. 
23 7. Bab. 187. Lind. 155. 
