264 COMPOSTT.E. [Achilkea. 



required to produce such a result with the generality of people. The flowers when 

 chewed have a biting airimony, which is of very short duration. 



The total want of a border to the seed, the absence of paleee towards the circum- 

 ference of the disk or base of the elongated receptacle, and the sterile florets of 

 the ray, constitute the genus Marula of Cassiui a very artificial one ; and were 

 the principle carried out of making new genera upon every slight deviation in 

 structure we should soon have as many genera us species. 



This is a common and introduced weed in most parts of N. America to which 

 colonization has extended, where, however, it is by no means so troublesome and 

 hurtful an intruder as with us. 1 have seen it growing as far South and West as 

 Natchez and New Orleans. 



XVI. i^cHiLL^A, Linn. Yarrow, 



" Papjyus 0. Recei^tacle flat, chafiy. Involucre ovate, imbri- 

 cated. Florets of the ray 5 — 10, roundish or obcordate." — Br. Fl. 



1. A. Millefolium, L. Common Yarroio or Millfoil. " Leaves 

 deeply bipinnatifid, lobes incise, segments linear -actite, stems 

 furrowed, scales of the involucre nearly glabrous." — Br. Fl. p. 

 245. E. B. t. 758. 



13. Flowers rose-colour or deep red. 



In meadows, pastures, on hedgebanks, by roadsides and borders of fields ; 

 everywhere. Fl. June — September. Fr. September, October. 2|. 



/3. Shore near E. Cowes Castle. This var., which is not unfrequent, is often to 

 be seen in gardens. 



Receptacle conical. Paleai brownish, lanceolate, concave, lorn at the summit 

 and margins, glabrous. Achenia ash-gray, obovato-obhmg, subtetragonous, much 

 compressed, with a narrow flat margin, striato-rugose and glabrous. 



2. A. Ptarmica, L. Sneezeivort Yarroiv. Goose - tongue. 

 " Leaves shining glabrous linear-lanceolate acuminate uniformly 

 and sharply serrate, serratures appressed scabrous at the margin, 

 ray 8—12 flowered."— Br. Fl. p. 244. E. B. t. 758. 



In damp meadows, pastures, heathy bushy places, moist margins of fields and 

 ditches, &c., but not common. Fl. July — September. Fr. September, October. 



E. Med. — Smallgain's heath. 



W. Med. — In and along the edge of Parkhurst forest, by the roadside from 

 Newport to Yarmouth, very plentifully, as well as in the plantations on the enclo- 

 sures. Field by the roadside from Yarmouth to Shalfleet, nearly opposite to 

 Cranmore farm. Borders of fields between Cranmore farm and the road to Ning- 

 wood. In the bog at Cockleton, sparingly. On a heath or common (Wilming- 

 ham heath) on the East side of the Yar. By the roadside between Wootton and 

 Newport, a litlle beyond the bridge across the road. Alvington manor-land, 6. 

 Kirkpairick, Esq. About the Depot hospital, B. T. W. 



Root jointed, creeping horizontally. Slem erect, slender, roundish, stifi", a foot 

 or 18 inches high, a little downy towards the summit. Leaves sessile, linear, 

 rigid, acute, sharply and evenly serrated, glabrous. Panicle terminal, corymbose, 

 its branches downy. Flowers larger and fewer than in A. Millefolium, the 

 disk grayish yellow, the ray white and broad. Scales of the involucre close- 

 pressed, lanceolate, cottony, with a brown border. Paleee broadly lanceolate, 

 hairy at the tips. Florets all perfect ; those of the ray with styles only. 



The bruised flowers have a pungent aromatic scent, though the rest of the herb 

 is nearly inodorous. The ray is deflexed, at night or when the plant is gathered, 

 as in Anthemis. 



