SYNGENESIA— POLYG.-SUPERF. Achillea. 461 

 409. ACHILLEA. Yarrow. 



Linn. Gen. 435. Juss. 1 86. Fl. Br. 908. Vaill. Mhi. de VAc. des 



Sc. 593./. 2, 10, 36. Lam. t. 683. Gcertn. t. 168. 

 Millefolium, and Ptarmica. Tourn. t. 283. 



Nat. Ord. see n. 408. 



Common Cal. ovate, imbricated, with several ovate, acute, 

 converging scales. Cor. compound, radiant ; Jlorets of 

 the disk not very numerous, all perfect, tubular, with 5 

 equal spreading segments ; those of the radius from 5 to 

 10, ligulate, but peculiarly short and rounded, broader 

 than long, inversely heart-shaped with a small interme- 

 diate lobe or tooth. Filam. in the tubular florets only, 

 very short, capillary. Ajith. in a cylindrical tube. Germ. 

 in all the florets small, obovate. Stjjle thread-shaped, not 

 prominent. Stigmas spreading, obtuse. Seed-vessel none, 

 but the upright, scarcely altered, calyx. Seed in all the 

 florets obovate, abrupt, without any border or crown. 

 Recept. narrow, slightly elevated, beset with lanceolate, 

 chaffy, acute, deciduous scales, as tall as the florets of 

 the disk. 



A very natural genus of perennial herbs, with simple, ser- 

 rated, pinnatifid, or doubly pinnatifid leaves, either smooth 

 or downy. Fl. numerous, small, corymbose, erect, white, 

 reddish, buff-coloured, or yellow. Qualities aromatic, 

 bitter, tonic and stimulating. 



The above generic character will be found to differ, in some 

 particulars, from that of Linnaeus, especially with regard 

 to the shape of the receptacle. Achillea, though different 

 in habit from Anthemis, comes very near that genus in 

 character ; but the short, broad, rounded Jlorets of the 

 radius afford a good distinction. 



I. A. Ptarmica. Sneeze-wort Yarrow. Goose-tongue, 



Leaves linear, pointed, equally and sharply serrated, smooth. 

 A. Ptarmica. Linn. Sp. PL 1 266. fVilld. v. 3. 2 1 9 1 . Fl. Br. 908. 



Engl. Bot. f. 1 1. t. 757. Curt. Lond.fasc.b. t. 60. Hook. Scot. 



248. Fl. Dan. t. 643. 

 A. n. 117. Hall. Hist. V. 1.49. 

 Ptarmica. Rati Syn. 183. Ger. Em. 606./. Matth. Valgr. v. 1. 



535./. Camer. Epit. 354. / Fuchs. Hist. 639. /. Ic. 367./. 



Dalech. Hist. 1168./. 

 P. vulgaris, folio longo serrato, flore albo. Bauh. Hist. v. 3. p. 1. 



147./ 

 Tanacetum album seu acutum. Trag.Hist. 159./ 



