ACHILLEA. 175 



slightly convex disk, 1. bipinnatifid nearly glabrous, lobes linear 

 acute mostly entire.— JS. B. 1772. R. xvi. 1000.— St. 1—2 feet 

 high, branched, angular, furrowed. Heads solitary on long ter- 

 minal stalks ; scales confined to the central part of the recep- 

 tacle; disk yellow; ray white, without styles. Tube of cor. 

 2-winged. Phyll. obtuse, with white membranousmargins. Whole 

 plant fetid and acrid. — Fields and waste places. A. VII. — IX. 



*** Scales of the receptacle thin membranous obtuse. 



5. A.nobilisih.); receptacle conical,fr. " subtrigonous smooth 

 crowned with an obsolete margin," 1. bipiunate, leaflets linear- 

 subulate slightly downy rather fleshy acute. — E. B. 980. St. 2/. 

 15. — St. procumbent, 1 foot long, much branched. Heads soli- 

 tary, terminal ; disk yellow ; ray white. Pleasantly aromatic. — 

 Gravelly and sandy places. P. VII. VIII. Chamomile. E. I. 



lAnacyclus radiatus (Lois.) ; 1. bipinnatifid rather woolly, 

 lobes linear-subulate, outer phyll. hairy on the back, inner obtuse 

 dilated diaphanous above. — Head solitary; ray yellow. — Dunboy 

 Quay, Bearhaven, Cork. Mr. W. Wilson. A. VII.] 



13.(21.) Achillea im». Yarrow. 



1. A. Ptarmica (Jj.) ; I. shining linear-lanceolate attenuated 

 acute glabrous smooth uniformly and finely serrate, serratures ad- 

 pressed tnucronate minutely scabrous at the margin, ray 8 — 12- 

 flowered equalling the involucre, corymb compound. — E. B. 757. 

 R. xvi. 1024. — St. about 2 feet high, slightly branched above, 

 erect, leafy, angular, smooth. Phyll. with a dark brown mem- 

 branous margin. Limb of the radiant florets longer than broad, 

 white. Disk broad, white. L. sometimes very narrow ; ser- 

 ratures closely adpressed, lower not deeper than the others.— 

 Moist meadows and thickets. P. VII. VIII. Sneezewort. 



[2. A. decohrans {^cVraA.); i. opagae linear-lanceolate 6/«K<isA 

 downy thickly punctured coarsely and doubly serrate with spread- 

 ing serratures laciniate and radiating at the base, ray 5- or 6- 

 flowered about equalling the involucre, corymb compound. — A. 

 serrata Sm., E. B. 2531 (not Retz.).— St. simple, erect, leafy, 

 with axillary leafy tufts, downy. Phyll. with a reddish-yellow 

 membranous margin. Limb of the radiant florets pale yellow, 

 broader than long. Disk darker yellow. L. not at all attenuated 

 and very different in shape, consistency and sculpture from those 

 of the preceding. — Near Matlock. P. IX.] E. 



*3. A. tomentosa (L.) ; I. with a linear-lanceolate outline pinna- 

 tifid woolly, lobes crowded linear acute, trifid in the lowermost 

 leaves, 2 — 3-fid in the intermediate, uppermost simple, corymb 

 repeatedly compound, ray equalUng about half the involucre. — 



