248 SYNGEN. POLYGAM. FRUSTRAX, 



37. ACHILLEA. 



* Floivers white, or rarely reddish. 



1. A. Plannicn {Sueexe-ifort), leaves linear lanceolate acuminate 

 hluirply serrated. Lig/llf. p. 495. E. B. t.757. 



H.VB. Moist meadows and pastures, frequent. Fl. July, Aug. 1/ . 

 Stem 1 — 3 feet high, erect, terminating in a rather large corymb, 



whose disk, as well as ray, is white. When dried and pulverized 



has been used to excite sneezing. 



2. MiUejotiam [common Yarroia), leaves bipinnate slightly hairy 

 their segments linear toothed acute, stems furrowed. LightJ'. 



■ p. 496. E. B. t.7oS. 



Hab. Pastures and way-sides, frequent. Fl. the summer through. 11 . 



Stem erect, about a foot high, terminating in a corymb oij^ou-eis 

 which are smaller than those of the last species, white, or sometimes 

 tinged with rose colour. The quality of the plant is highly astrin- 

 gent, and the Highlanders are said to make an ointment of it which 

 drie8 and heals up woimds. 



** Flowers yellow. 



3. A. tomentosa {luoolly Yarrow), leaves hipinnatifid woolly the 

 f^egments crowded linear acute, corymbs repeatedly compound. 

 £.jB. /.2532. 



Hab. Dry hilly pastures exposed to the sun, rare. On Spittle Hill, 

 ^o the N. W. of Balvie, Dumbartonshire, and on the hills near 

 I'ai.'^ley : discovered by Mr. Hugh Ross. Fl. Aug. 1/ . 



A s}>an or rather more in height. Readily recognised by its downy 

 leaves, and much branched corymbs of yellow fiow^ers. 



3. POLYGAMIA FRUSTRANEA, 



[CynaroceplialcBy Juss.) 



38. CENTAUREA. 



1. C. Jacea {broivn Kimpweed), scales of the involucre scari- 

 ose torn the lower ones piimatifid, leaves linear lanceolate 

 the lower ones broader and toothed. E. B. t. 1(57!^. 



Hab. Discovered in a young plantation in Newbigging JSIuir, near 

 Belmont castle, 1811, by i>/r. Young. Seen near Newtyle, An- 

 gus-shire, by 7). Don: but I doubt whether it may not be the same 

 station as the first. Invercarrity by Kinnordy, Kerriemuir, C. Ly- 

 ell, Esq. Fl. Aug., Sept. 1/ . 



Lower leaves obovato-lanceolate, petiolate, toothed ; npper ones entire, 

 sessile. Scales of the involucre pale brown, shining; the outer 

 ones deeply pinnatifid ; the inner or uppermost ones torn, in which 

 respect it differs greatly from C. nigra. Florets not very numerous, 

 spreading, purple. 



2. C. nirrra (Hack Knaptveed) , scales of the involucre ovate 

 ciliated with capillary teeth, lower leaves angulato-lyratCj up- 

 per ones ovate. Light/, p. 498. E. B. /. 278. 



