620 CICHORIACEAE 
6. L. sagittifolia, Ell. (Fig. 3, pl. 162.) ARRow-LEAvED LETTUCE. 
Biennial. Plant smooth throughout, 3 to 5 ft. high, not very leafy. Leaves 
not divided into lobes, oblong lance-shaped, the upper lance-shaped, the 
lower clasping with angular projections each side of the stem. Flowers 
yellow or purplish. Dry soil, our area. July-Sept. 
7. L. villosa, Jacq. (Fig. 1, pl. 164.) Hatry-vEInEpD BLUE LETTUCE. 
Stem 2 to 6 ft. high, the whole plant smooth. Leaves egg-shaped to 
oblong-lance-shaped, 4 to 6 in. long, not lobed, the margins irregularly 
toothed, the lower on leaf-stalks. Flowers numerous in a diffuse cluster, 
rays blue. Borders of woods, New York, westward and southward. July- 
Sept. 
8. L. floridana, (L.) Gaertn. (Fig. 6, pl. 162.) FLoripaA Lettuce. 
Stem 3 to 7 ft. high; plant smooth. Lower leaves triangular, deeply 
lobed, the margins toothed, 4 to 12 in. long. Heads numerous, with blue 
flowers. Moist places. July-Sept. 
9. L. spicata, (Lam.) MHitche. (Fig. 3, pl. 164.) Tart Biue Let- 
TUCE. Plant smooth, 3 to 12 ft. high. Lower leaves 5 to 12 in. long, 
deeply lobed, sharply toothed, with or without leaf-stalks. Flower heads 
numerous, rays blue. Moist places, throughout our range. July-Oct. 
12, CREPIS) LE. 
Herbs, annual or perennial, the leaves mostly basal. Heads of yellow 
or orange flowers, small or medium in diffuse, more or less flattened clus- 
ters. Involucre cylindric or bell-shaped, the principal series of bracts 
equal, the exterior bracts small and irregular. Receptacle naked. Ai- 
grette of many soft white bristles. 
l. C. tectorum, L. (Fig. 6, pl. 164.) NARRow-LEAVED HAWKSBEARD. 
Annual herbs, with basal and stem leaves, the former narrow, lance- 
shaped, 4 to 6 in. long, indented or deeply lobed, the lobes or margins 
rolled backward, the upper leaves narrow with plane margins which, in 
case of the larger are rolled back at the margins. Stem 1 to 2 ft. high, 
the whole plant somewhat downy. Flower heads numerous, 4 to 1 in. 
broad, the involucre about } in. high. Fruit spindle-shaped, the ribs 
rough, the aigrette arising directly from the apex. Waste places, southern 
part of our area. June-July. 
2. C. virens, L. (Fig. 4, pl. 164.) Smoorn HaAwkspearp, (0. 
capillaris, Wallr.) Plant smooth, not downy. Stem 1 to 24 ft. high. 
Leaves mostly basal, lance-shaped or spatula-shaped, clasping at base, 5 
to 8 in. long, deeply lobed or indented, not rolled back at the margins. 
Upper leaves linear. Flower heads numerous, involucre } in, high, eylin- 
dric. Rays yellow. Fruit smooth, 10-ribbed. Waste places, southern sec- 
tion. July-Sept. 
3. C. biennis, L. (Fig. 5, pl. 164.) Rovam Hawxkspearp. Whole 
plant usually rough hairy. Stem 2 to 3 ft. high. Basal leaves about 6 
in, long, spatula-formed or oblong on leaf-stalks, lobed or prominently 
toothed, the margins not rolled back. Heads numerous, 1 to 14 in. broad, 
the involucre 4 in. high. Fruit somewhat conical with 13 ribs. Bristles 
very slender. Waste places, New York, New Jersey and Penna. June- 
Aug. 
