50 ACHILEA, 



ding. In Florida, small leaves and flowers, 

 near to A. pilosa. Seen dry. 



ACHILLEA. Well known natural Genus, 

 which has been increased to 7 N. American 

 species. 



1. A. MILLEFOLIIJM. L. the common yarrow 

 or milfoil, see my medical flora : our American 

 Sp. is not introduced, it has been deemed pecu- 

 liar by some botanists, having stronger medical 

 properties,and it has produced several varieties, 

 that are becoming species ! All in Autikon. 



Var. -rosea, with rose colored flowers. 



Var. carnea, flowers of a pale flesh color. 



Var. pumiln. Dwarf, 4 to 6 inches high. 



Var tenni folia. Leaves nearly glabrous, with 

 slender well divided segments, almost pecti- 

 nated. 



2. A. GRACTLIS Raf. fl. texensis 12, Stem slen- 

 der stiated. leaves remote, narrow smooth, lower 

 petiolated recurvate, pinnate, folioles narrow 

 laciniate, corymb small glomerate. In Arkan- 

 sas and Texas, only 6 inches high, fl. white. 



3. A. PTARIWJCA, doubtful, seen by few botan- 

 ists, undescribed: perhaps same as 7. 



4. A. SETACEA, near gracilis, differs by 

 leaves mucronate pilose. 



5. A. LANULOSA Nuttal. A. tomentosa Pursh 

 not Wildenow nor Hooker. Silky, segments 

 crowded, corymb composite. In Missouri and 

 Oregon. 



6. A. ASPLENIFOLIA. Pursh, known by ob- 

 tuse segments. 



8. A. MTJLTIFLORA Hooker. Ptarmica Rich- 

 ardson. Stem erect, leaves long lanceolate ser- 

 rate pinnatif, segments serrulate, nearly smooth, 

 corymb composite, rays very short. In North 

 Canada. Is it the ptarmica of Newyork ? 



