ter --95.

94b. Leaves not linear --99.

95a. Heads showy, purple, in a long spike or raceme (late summer)
(Blazing Star) --96.

95b. Heads not showy, in a loose panicle or raceme --240b.

96a. Involucral bracts rounded at the tip, appressed (5-15 dm.
high) --97.

96b. Involucral bracts pointed (3-6 dm. high) --98.

97a. Heads 8-12-flowered =Blazing Star, Liatris spicata.=

97b. Heads with 25 flowers or more =Blazing Star, Liatris scariosa.=

98a. Involucral bracts long-acuminate, spreading
=Blazing Star, Liatris squarrosa.=

98b. Involucral bracts mucronate, appressed
=Blazing Star, Liatris cylindracea.=

99a. Flowers yellow (2-8 dm. high) --172b.

99b. Flowers bright-red or purple, in flat-topped clusters (8-20 dm.
high; late summer) (Ironweed) --100.

99c. Flowers blue (3-8 dm. high; late summer)
=Mist Flower, Eupatorium coelestinum.=

99d. Flowers flesh-color, pink, cream-color, or white (flowers in
summer) --103.

100a. Leaves glabrous beneath or minutely pubescent; heads
15-30-flowered --101.

100b. Leaves tomentose beneath; heads 30-50-flowered --102.

101a. Inflorescence densely crowded; usually 1 m. or less high
=Ironweed, Vernonia fasciculate.=

101b. Inflorescence loose and open, 15-30 cm. wide; 1-2 m. high
=Ironweed, Vernonia altissima.=

102a. Pappus tawny in color =Ironweed, Vernonia missurica.=

102b. Pappus purple =Ironweed, Vernonia illinoensis.=

103a. Leaves alternate --104.

103b. Leaves opposite --106.

103c. Leaves whorled (1-3 m. high; flowers pink or purple, late summer)
(Joe-Pye Weed) --107.

104a. Heads 5-flowered (5-20 dm. high; flowers white or pinkish,
late summer) (Indian Plantain) --105.

104b. Heads 10 25-flowered (5-10 dm. high; flowers white, late
summer) =False Boneset, Kuhnia eupatorioides.=

104c. Heads with more than 50 flowers (3-20 dm. high; flowers
white, summer) =Fireweed, Erechtites hieracifolia.=

105a. Leaves entire, with many veins from base to apex
=Indian Plantain, Cacalia tuberosa.=

105b. Leaves sharply serrate =India