46 



1237, S. AQRFXS, L. 



Rocky woods and banks. Ju — 2. (B.) 

 ARCTIUM. Burdock. 



1251. A. Lappa, L. Common Burdock. 



Lappa oficinalis All. var. major, Gray's Manual. 

 Introduced. Waysides. July — 4. (B.) 

 ■CNICUS, Yaill. Thistle. 



1254. C. lanceolatus, Hoffm. (Scotch Thistle.) 

 Cirsium lanceolatum, Scop. 



Naturalized. Roadsides, pastures and woods. July — 2. (B.) 

 1259. C. MUTicus, Pursh. 

 Cirsium muticum, Mx. 



Swamps. Ange Gardien. (H. M. Ami.) Templeton. Buck- 

 ingham. (/. F.) July— 4. 

 1262. 0. arve7isis, Fnvsh. (" Canada Thistle.") 

 Cirsium arvense. Scop. 



Naturalized throughout the country. Ju — 3. (B.) 

 ■ONOPORDON", Vaiil. (Scotch Thistle.) 

 I2G6. 0. acanthium, L. 



Introduced. Roadsides. Montreal Road. {It. B. Wliyte.) July — 4. 

 Called " Scotch Thistle," but not a native of Great Britain. 

 CENT A UREA, L. Star Thistle. 



12G9. C Cyanus, L. (Blue bottle. Corn-flower.) 



Introduced. In wheat fields, Billings Bridge. July — 1. 

 CICHORIUM, Tourn. Succory, Endive. 

 1271. C. Intyhus, L. (Chicory.) 



Introduced. Abundant in ditches and by way-sides. Ju — 3. 

 LAMPSANA, Tourn. Nipple-wort. 

 1276. L. communis, L. 



A weed in gardens and by way-sides. [H. B. Sm%U.) 

 HIERACIUM, L. Hawkweed. 



1288. H. Canadense, Mx. 



River banks and in thickets. Aug. — 1. 



1289. H. SCABRUM, Mx. 



Sandy fields and woods. Aug. — 1. 

 TARAXACUM, Hall. Dandelion. 



1308. T. officinale, Weber. 

 Taraxacum Dens-leonis, Desf. 



Completely naturalized throughout Canada. May — 2. (B.) 

 LACTUCA, L. Lettuce. 



1309. L. Canadensis, L. 



Damp woods. A tall, wand-like i)lant. Stem thick, hollow and 

 very leafy, smooth. Flowers generally pale yellow, in a long, 

 narrow naked panicle. Aug. — 1. (B.) 



1310. L. INTEGRIFOLIA, Bigel. 



Ij. Canadensis var. integrifolia, T. & G. 



Parliament Hill. Leaves smooth, undivided, and generally entire. 

 Rare. Augr. — 3. 



