ar; bracts longer than the flowers, heads 5-10 cm. wide
(6-15 dm. high) =Salsify, Tragopogon porrifolius.=

13b. Leaves broader, mostly serrate; bracts shorter than the flowers;
heads 2.5-4 cm. wide =Chicory, Cichorium intybus.=

14a. Heads in a narrow crowded cluster (5-15 dm. high) --30b.

14b. Heads in a spreading open panicle (Wild Lettuce) --22.

15a. Heads solitary at the summit of leafless stalks --16.

15b. Heads several, on leafy, naked, or scaly stalks --19.

16a. Basal leaves strictly entire; heads about 2.5 cm. wide (summer
and autumn) --35a.

16b. Basal leaves toothed, lobed, or pinnatifid (spring and summer)
--17.

17a. Heads 8-14 mm. wide (1-4 dm. high)
=Dwarf Dandelion, Krigia virginica.=

17b. Heads 25-50 mm. wide (1-6 dm. high) (Dandelion) --18.

18a. Outer involucral bracts reflexed
=Dandelion, Taraxacum officinale.=

18b. Outer involucral bracts erect or spreading
=Dandelion, Taraxacum erythrospermum.=

19a. Pappus none; heads about 1 cm. wide (4-10 dm. high; summer)
=Nipplewort, Lapsana communis.=

19b. Pappus of an inner row of bristles and an outer row of short
scales; heads about 3 cm. wide (3-8 dm. high; early summer)
=Cynthia, Krigia amplexicaulis.=

19c. Pappus of feathery bristles (summer) --20.

19d. Pappus of simple bristles --25.

20a. Flower-stalk scaly, without foliage leaves (2-6 dm. high)
=Fall Dandelion, Leontodon autumnalis.=

20b. Stem leafy (3-10 dm. high) --21.

21a. Leaves entire, linear-lanceolate
=Meadow Salsify, Tragopogon pratensis.=

21b. Leaves serrate, oblong-lanceolate =Picris, Picris hieracioides.=

22a. Pappus tawny in color (1-3 m. high) --23.

22b. Pappus white --24.

23a. Leaves pinnatifid =Wild Lettuce, Lactuca spicata.=

23b. Leaves undivided, dentate
=Wild Lettuce, Lactuca spicata var. integrifolia.=

24a. Upper leaves entire; heads about 1.5 cm. wide (5-10 dm. high)
=Wild Lettuce, Lactuca pulchella.=

24b. Upper leaves dentate or lobed; heads about 1 cm. wide (1-3 m.
hig