COMPOSITE FAMILY 263 



hair-like segments ; heads small, white, pink, or red, in dense ter- 

 minal corymbs. — Pastures and roadsides ; very common. The 

 plant has a strong, slightly aromatic odour, and is said to have the 

 property of healing wounds. Its clusters of flower-heads might 

 be supposed, by an unpractised eye, to belong to one of the 

 Umbelliferae. Fl. May— September. Perennial. 



2. A. Ptdrmica (Sneezewort). — Somewhat taller and more 

 slender than the last, from which it may be at once distinguished 

 by its undivided, linear-lanceolate, serrate, glabrous leaves and 

 larger heads of flowers, of which both disk and ray are white. — 

 Moist meadows, heaths, &c. ; common. — Fl. July, August. Peren- 

 nial. 



16. DiOTis (Cotton- weed). — An erect, branched, woolly plant ; 

 leaves scattered ; heads sub-globose, yellow ; receptacle flat, scaly ; 

 florets all tubular and perfect ; corolla with two ears or spurs at 

 its base, which remain and crown the fruit ; no pappus. (Name 

 from the Greek di, double, ous, otos, an ear, from the structure of 

 the fruit.) 



1. D. maritima (Seaside Cotton-weed). — The only species. The 

 woody rhizome runs deeply into the sand ; the many stout ascend- 

 ing stems, about a foot high, are branched above, and thickly set 

 with sessile, oblong, blunt leaves, which, as well as the rest of the 

 plant, are covered with thick white cotton, and almost hide the 

 small terminal heads of yellow florets. — Sandy sea-shores ; rare. — 

 Fl. August, September. Perennial. 



17. Anthemis (Chamomile). — Strongly-scented herbs; leaves 

 scattered, bi-pinnatifid ; heads solitary ; receptacle flat or convex, 

 scaly ; bracts with membranous margins, imbricate, in few rows ; 

 ray-florets in i row, ligulate, oblong, generally white, or rarely 

 absent ; fruit not compressed ; pappus represented by a mem- 

 branous ring. (Name from the Greek anthos, a flower, from the 

 value of its flower-heads as a medicine.) 



i."^ A. tinctoria (Ox-eye Chamomile). — A much-branched, 

 cottony plant, i — 2 feet high, with much-divided leaves and large 

 heads, with a hemispherical receptacle and both ray and disk bright 

 yellow, resembling Chrysdnthemum segetum. — Fields ; not in- 

 digenous. — Fl. July, August. Biennial. 



2. A. Cotula (Stinking Chamomile). — Distinguished by its 

 strong disagreeable odour; upright, branched stem; leaves 

 repeatedly cut into hair-like segments, glandular-dotted, smooth ; 

 heads long-stalked, with long conical receptacle, white, neuter ray- 

 florets and yellow disk. — Waste places; common. Very acrid, 



