71 
610. P. alba, L. White Lettuce. 
Nabalus albus, Hook. 
Rich open woods and fence-rows in sandy soil; common. August — 
September. /■ 
611. P. altissima,L. Tall White Lettuce. 
Nabalus altissimus , Hook. 
Rich woods. September. (B.) 
Whiting and Pine Station, Ind. Glencoe, Johnson . Stem 2 to 4 
feet high, Whiting, Ind., Hill. 
TARAXACUM, Haller. 
612. T. officinale, Weber. Common Dandelion. Priest’s Crown. 
T. dens-leonis, Desf. 
Everywhere abundant, less common in moist or prairie lands. 
March — November. 
XjACTUCA, Tourn. 
613. L. scariola, L. Prickly Lettuce. 
Roadsides and dooivyards; infrequent. July — September. (B. P.) 
614. L. banadensis, L, Wild Lettuce. Trumpet Milk-weed. Fire- 
weed. 
Rich and damp soil in uncultivated portions of fields, fence-rows, 
borders of woods, etc.; common. July — September. 
Flowers purplish. 
615. L, acuminata, Gray. False Lettuce. 
Mulgedium acuminatum , D C. 
Borders of woods ; infrequent or rare. August. (B.) 
Evanston. Near Whiting, Ind., 1884-’85. 
616. L. leucophsea, Gray. False Lettuce. 
Mulgedium leucophceum , D C. 
Low grounds, borders of woods, etc.; frequent. July — Sept. (B.) 
617. L. leueophasa, Gray, var. integrifolia, Gray. 
Rare. August, 1887-88. (B. P.) 
Near Kensington. 
SONCHUS, L. 
618. S. oleraceus, L. Common Sow-thistle. 
Waste places near cultivated or rich soil; infrequent. August — 
September. (B.) 
