LII. COMPOSITE 
265 
receptacle conical, covered with small, lanceolate, 3-toothed scales ; 
pappus of about 15 spathulate, fringed scales ; ligules few, white, 
very short, notched ; disk-flowers yellow ; corolla 5-toothed. 
Achenes angled, roughly pubescent, crowned with the pappus 
scales. 
Simla, common near houses ; January-December. — Himalaya, 4000-8000 ft. ; 
introduced from America. 
Naturalised in a few localities in England. 
33. ACHILLEA. From Achilieos, the classical name of A. 
Millefolium ; in honour of the mythical hero Achilles. — N. tem- 
perate regions. 
Achillea Millefolium, Linn . ; FI. Br. Ind. iii. 312. An erect, 
pubescent herb ; stems 6-24 in., leafy, grooved. Leaves alternate, 
oblong-lanceolate, 2-4 x J-j in., 3-pinnatisect ; segments linear, 
acute ; radical leaves stalked, upper sessile. Heads radiate, J in. 
diam., crowded in compound corymbs. Involucral bracts few, 
erect, outer ones shorter ; receptacle flat, covered with thin, 
oblong scales nearly as long as the flowers ; flowers white or 
pale pink ; pappus none ; ligules rounded, reflexed ; corolla of 
disk-flowers 5-lobed. Achenes oblong, flattened, shining. 
Mahasu, Huttoo ; August-October. — W. Himalaya, 6000-9000 ft.— N. Asia, 
N. America, Europe (Britain, Milfoil). 
34. TANACETUM. Origin of name doubtful ; said to be 
altered from the Greek athanasia, immortality, referring to the 
persistent flowers. — N. temperate regions. 
Strong-scented, erect herbs. Leaves alternate, pinnatisect ; 
segments linear. Heads discoid, numerous, in terminal corymbs. 
Involucral bracts many, erect, margins coloured, outermost 
linear ; receptacle convex, naked ; flowers yellow ; pappus none ; 
corolla 5-toothed. Achenes smooth, 5-ribbed. 
Leaves J-f in. Involucral bracts woolly. Flowers orange- 
yellow . . . . . . . . . . 1. T. nubigenum. 
Leaves (radical) 6-18 in. Involucral bracts hairy. Flowers 
bright yellow .2 . T. longifolium. 
1. Tanacetum nubigenum, Wall. ; FI. Br. Ind. iii. 318. Hoary ; 
stems tufted, 12 in., densely leafy in the upper part. Leaves 
J-J in., sessile. Heads nearly J in. diam., orange-yellow. Involu- 
cral bracts woolly. 
Shali ; September, October.— Simla to Sikkim, 9000-12,000 ft. 
2. Tanacetum longifolium, Wall. ; FI. Br. Ind. iii. 320. Hairy ; 
stems 6-18 in., leafy and densely hairy towards the top. Leaves 
6-18 in., mostly radical, far overtopping the flowers. Heads 
