MICHIGAN ACADEMY OF SCIENCE. 
103 
Cirsium muticum Michx. Swamp Thistle. 334. In the bramble associa- 
tion, in Piceci-Abies land in the gorge. 
Cirsium arvense (L.) Scop. Canada Thistle. 140. In the aspens, not com- 
mon. 
Cichorium intybus L. Chicory. 496. Along a road. 
Taraxacum officinale Weber. Dandelion. 497. Along a road. 
Sonchus asper (L.) Hill. Spiny-leaved Sow Thistle. 362. In a pasture.. 
Lactuca scariola integrata Gren. & Godr. Prickly Lettuce. 438. Fields. 
Lactuca canadensis L. Wild Lettuce. 145. In the aspens. 
Lactuca pulchella (Pursli) DC. Blue Lettuce. Found by Dr. Gleason in 
1911. 
Lactuca spicata (Lam.) Hitchc. Tall Blue Lettuce. In low r ground in 
beech-maple woods. 
Lactuca spicata integrifolia (A. Gray) Britton. 454. In a beech-maple 
woods along Burt Lake. 
Prenanthes alba L. White Lettuce. Found by Mr. Quick in 1911. 
Hieracium pratense Tausch. King Devil. 341. Collected in a beech- 
maple w r oods by Mr. F. E. Loew. 
Hieracium venosum L. Rattlesnake Weed. 277,348. A common species 
in the aspens. 
Hieracium scabrum Michx. 349. In the aspens. 
Hieracium canadense Michx. Found by Mr. Loew in 1910. 
