COMPOSITE. 131 



2. H. SCabra, Dunal. Boughiah, especially the leaves. 

 Pappus of 2 or 3 teeth, or a mere chaff-like border. — Niagara 

 Falls and N.W. 



43. ACHIJUE'A, L. Yareow. 



1. A. millefO'Uum, L. (Mjufoil.) stems simple. Leaves 

 dissected into fine divisions. Corymb flat-topped. Bays 

 only 4 or 5, short. — Fields and along fences ; very common. 



2. A. Ptar'mlea, L. (Snbeze-wobt.) Leaves simple, 

 lance-linear, serrate. Corymb loose. Eays 8-12, much 

 longer than the involucre. — Atl. Pro v. 



44. POLY.WSriA, L. LEAP-CnP. 



P. Canadensis, L. A coarse clammy-hairy herb. Lower 

 leaves opposite, petioled, pinnatifid ; the upper alternate, 

 angled or lobed. Heads small ; rays pale yellow. — Shaded 

 ravines; south-westward. 



45. SIL'PHIVIM, L. Rosin-Plabt. 



1. S. pepfolia'tum, L., (Ctrp- Plant) is found in south- 

 western Ontario. Stem stout, square, 4-8 feet high. Leaves 

 ovate, coarsely toothed, the upper ones united by their 

 bases. 



2. S. terebinthlna'eeum, L. (Pbatrie Dock.) Stem 

 tall, round, naked above, smooth. Badical leaves some- 

 times 2 feet long, rough-hairy, coarsely serrate, on slender 

 petioles. Heads small, loosely panicled. — Open woods and 

 grassy banks, south-western Ontario. 



46. KRIG'IA, Schreber. BwA£F Dandelion. 

 K. amplexieau'lls, Nutt. {Cynthia Virginica, Don.) 

 Boots fibrous. Stem-leaves 1-2, oblong or lanpeolate-spa- 

 thulate, clasping, mostly entire, the radical ones on short 

 winged petioles. Peduncles 2-5. — South-western Ontario. 

 41. lAMP'SAJfA, Tourn. Nipple-woet. 

 L. eommu'nls, L. Very slender and branching. Leaves 

 angled or toothed. Heads small, loosely panicled. — Borders 

 of springs ; common at Qiieenston Heights. 



