COMPOSITE. Ill 



3. C. benedic'ta, L. , {Cnicus benedicttts, L.) Flowers 



yellmv. Pappus double, of 10 long outer bristles and 10 



short inner ones. A low branching annual, with clasping 



cut leaves, and large sessile leafy-bracted heads. — Atl. Prov. 



6. XAN'TOIIIM, Tourn. Clotbub. 



1. X. Canadense, Mill.,var. eehina'tum. Gray. (Com^ 

 MON CoCKLEBtJR.) Stem rough, not prickly or spiny. 

 Leaves broadly triangular, and somewhat heart-shaped, long- 

 petioled. Fruit a hard 2-celled bur, nearly an inch long 

 clothed with stiff hooked prickles, the two beaks of the fruit 

 long and usually incurved. — Low river-banks and waste places. 



2. X. spino'Sum, L. (Spiny Clotbur.) Stem armed 

 with conspicuous straw-coloured triple slender spines, at the 

 bases of the lanceolate short-petioled leaves, the latter white- 

 woolly beneath. — Town of Dundas, Ontario ; the seeds having 

 been brought in wool from South America. 



7. ASIBRO'SIA, Tourn. Ragweed. 



1. A. artemisisefo'lia, L. (Hog-wbed.) Stem erect, 

 1-3 feet high, branching, hairy. Leaves tivice-pinnatijid, the 

 lobes linear, paler beneath. — Waste places everywhere, but 

 not so common northward. 



2. A. trif'ida, L., (Great Ragweed) is found in low 

 grounds in the south-west of Ontario ; also at Montreal and 

 Ottawa. Stem stouter than No. 1, 2-4 feet high. Leaves 

 opposite, deeply 3-lobed, the lobes oval-lanceolate and serrate. 



8. FRANSE'RIA, Cay. 

 F. Hookeria'na, Nutt. Low and diffuse, hairy. Leaves 

 bipinnatifid, at least the lower ones. — N.W. 



9. TANACE'TrJI, L. Tansy. 

 1. T. VUlga're, L. (Common Tansy.) A very strong- 

 scented herb, 2-4 feet high, smooth. Leaves twice-pinnate, 

 the lobes serrate, as are also the'wings of the petiole. Heads 

 densely corymbed. Var. erispum, DC, is easily disting- 

 uished by its crisper and more incised leaves. — Old gardens 

 and roadsides near dwellings. 



