200 COMPOSITE. [ANTHEMIS. 



1. A. arven'sis, L. ; annual, bracteoles of receptacle mucronate, ray- 

 flowers female white, disk-flowers winged. Corn Chamomile. 



Fields and waste places, local, from Lanark and Moray southwards ; S. and 

 E. of Ireland, rare ; a colonist, Watson ; fl. June- Aug. Pubescent or hoary. 

 Stem 1-2 ft., usually erect from a decumbent base, branched. Ltaf-tegmattt 

 -| in., linear, acute, not dotted. Heads 1-1 ^ in. broad; peduncles rather 

 long, slightly swollen upwards ; invol. bracts scarious, pale, obtuse, inner 

 lacerate, fruit glabrous, subequally ribbed all round, truncate ; disk broad, 

 crenulate. DISTRIB. Europe, N. Africa, W. Asia ; introd. into N. America. 



VAR. anf/lica, Spr. (sp. ) ; leaves fleshy pinnatifid, pinnules deeply serrate, 

 receptacle flat. A. maritima, Sm. not L. Sea-coast, Northumberland, 

 Durham. 



2. A. Cot'ula, L. ; annual, erect, bracteoles of receptacle setaceous, 

 ray-flowers usually neuter white, disk-flowers winged. Stinking May-weed. 

 Cultivated fields, from Dumbarton and Fife southwards ; rare in the N. of 



England and in Scotland ; common except in the N.W. of Ireland ; a colo- 

 nist, Watson; fl. June-Sept. Glabrous or pilose, foetid. Stem 8-18 in., 

 corymbosely branched. Leaves glandular-dotted, segments very narrow. 

 Heads as in A. arvensis, but peduncles more slender and invol. bracts 

 narrower at the tip. Fruit faintly ribbed, more strongly on the back. 

 DISTEIB. Europe, N. Africa, Siberia, W. Asia ; introd. in N. America. 

 Acrid, emetic ; a troublesome weed ; foliage blisters the hand. 



3. A. nob ills, L. ; perennial, bracteoles of receptacle lanceolate obtuse, 

 ray-flowers female white, disk-flowers cylindric. Chamomile. 



Pastures and dry soils, from Anglesea and Durham southwards ; rare and not 

 indigenous in Scotland ; common in Ireland ; fl. July-Sept. Woolly or 

 pubescent, aromatic. Branding spreading from the root, leafy. Ltaf-qar* ntt 

 linear. Heads 1-1^ in. (Hani. , few ; peduncles long, slender ; invol. bracts 

 pubescent, scarious. Ray-flowers .sometimes 0. Fruit obovoid, terete ; disk- 

 very small, concealed by the inflated base of the corolla. DISTRIB. France, 

 Spain, Germany, Austria, N. Africa. Tonic and febrifuge. 



19. ACHILLE A, L. 



Perennial herbs. Leaves alternate, entire or divided. Heads corymbose, 

 rayed, yellow, or with the ray white or purple ; invoL bracts oblong, 

 margins sometimes discoloured and scarious ; receptacle narrow, elongate, 

 covered with chaffy bracteoles. Ray -flowers female, few; ligule broad, short. 

 Disk-flowers tubular, 2-sexual, compressed, 5-toothed ; anther-cells not 

 tailed. Fruit oblong, compressed, margined ; pappus 0. DISTRIB. Europe 

 and N. Asia ; rarer in America ; species about 50. ETYM. Mythical. 



1. A. P tar mica, L. ; leaves linear serrulate, heads few. Sneeze-wort. 

 Meadows, banks, and waste places ; ascends to 2,200 ft. in the Highlands ; 

 tt. July-Sept. Glabrous or pubescent. Rootttoek creeping extensively. Stem 

 1-2 ft., erect, rigid, ribbed, sparingly branched. Leaves 2-3 in., sessile, 

 scattered, teeth cartilaginous. Heads corymbose, $ in. diam., hemispheric ; 

 peduncles ebracteate ; receptacle convex, invol. bracts pubescent, rigid, 

 outer lanceolate, acute, margins purple, inner oblong, obtuse. Ray-flawert 

 8-12, ligule reflexed broad, as long as the involucre ; disk greenish-white. 

 /'.'it glabrous, shining. DISTRIB. Europe except Greece and Turkey, 

 Siberia ; introd. in N. America. Rootstock pungent, a sialogogue. 



