252 COMPOSITE FAMILY. 



heads very large, immensely varied under cultivation ; the scales of the 

 involucre with narrow scarious margins, and the tubular disk flowers sub- 

 tended by chaffy scales. Japan ; parent of the greater number of garden 

 forms., 



C. Indicum, Linn. Leaves more sharply cut, thinner and green ; invo- 

 lucral scales with wide scarious margins ; no chaff with the tubular disk 

 flowers ; heads smaller, yellow rays predominating. Japan. 



53. TANACETUM, TANSY. (Old name.) TJ. (p. 222.) 



T. vulg&re, Linn. Common Tansy. Eu. ; cult, in old gardens, and a 

 roadside weed, 2°-4° high, smooth, strong-scented, and acrid, with deep 

 green 1-3-pinnately compound leaves ; the leaflets and winged margins of 

 the petiole cut-toothed ; var. cRfspuM, leaves more cut and crisped. 



54. ARTEMISIA, WORMWOOD. (Dedicated to Artemis, the Greek 

 Diana.) (p. 222.) 



* Leaves {and whole plant) smooth and green, or nearly so. 



+- Very fine thread-like or capillary divisions to the 1-S-pinnately divided 

 leaves ; heads loosely panicled. 



A. AbrStanum, Linn. Southernwood. From S. Eu. ; cult, in gardens 

 for the pleasant-scented foliage, 3°-5° high, woody-stemmed, strict. % 



A. caudata, Michx. Heads small, racemed in a wand-like panicle. 

 Sandy coast and. lake shores. ® 



+- +- Leaves not very fine or finely cut. 



A. biennis, Willd. Gravelly banks and shores W., becoming a weed E. ; 

 l°-3° high, with small greenish heads, much crowded in the axils ; the once 

 or twice pinnatifid leaves with their lobes linear, in the lower cut-toothed. 



® ® * * Leaves hoary or cottony, at least underneath. 11 



A. Absinthium, Linn. Wormwood. Old gardens and a roadside weed ; 

 strong-scented, silky-hoary, with stems 2°-4° high and rather woody at 

 base, twice or thrice pinnately parted leaves with lanceolate lobes, and 

 nodding hemispherical heads. Eu. 



A. vulgaris, Linn. Mdgwort. Old gardens and roadsides, from Eu. ; 

 leaves pinnatifid, green above and cottony-white beneath, their lance- 

 linear divisions mostly cut and cleft ; heads small, in open panicles. 



A. Ludoviciana, Nutt. Leaves lanceolate, mostly cottony-white on 

 both sides, many of them entire or merely toothed j heads larger in nar- 

 row or spike-like panicles. Mich., W. and S. W. 



55. TUSSILAGO, COLTSFOOT. (Latin : tussis, a cough, for which 

 the plant is a reputed remedy.) "il (p. 226.) 



T. Fdrfara, Linn. Spreading by its creeping (mucilaginous and bitter) 

 rootstocks, which send up, in earliest spring, scaly-bracted scapes, 3'-6' 

 high, bearing a single Dandelion-like head, followed by the rounded and 

 somewhat angled or toothed heart-shapeld or kidney-shaped leaves, which 

 are cottony beneath when young. A weed from Eu., common E. 



56. ARNICA. (Old name, thought to be a corruption of Ptarmica.) 

 The common European species is used in medicine. % (p. 225.) 



A. nudicaulis, Nutt. Stem naked, bearing only 1 or 2 pairs of small 

 leaves, although l°-3° high, the main leaves being clustered at the root, 

 thickish, sessile, ovate or oblong, 3-5-nerved, mostly entire, hairy ; heads 

 several, loosely corymbed, pretty large and showy, in spring. Low pine 

 barrens, S. Penn., S. 



