LOBELIACE^E. 135 



3. S. arven'sis, L., (FIELD S.) with bright yellow flowers 

 and bristly involucres and peduncles, is found eastward. 



59. TRAGOPO'GON, L. GOAT'S BEARD. SALSIFY. 



1. T. praten'sis, L. (YELLOW GOAT'S BEARD.) Spread- 

 ing westward along the railway lines. Flowers yellow. 

 Peduncle little thickened below the head. 



2. T. porrifo'lius, L. (SALSIFY.) Stem 2-3 feet high. 

 Peduncle thickened below the head. Flowers purple. 



ORDER LI. LOBELIA' CEJE. (LOBELIA FAMILY.) 



Herbs with milky acrid juice, alternate leaves, and loosely 

 racemed flowers. Corolla irregular, 5-lobed, the tube split 

 down one side. Stamens 5, syngenesious, and commonly 

 also monadelphous, free from the corolla. Calyx tube adhe- 

 rent to the many-seeded ovary. Style 1. The only genus is 



LOBE'LIA, L. LOBELIA. 



1. L. eardina'lis, L. (CARDINAL FLOWER.) Corolla large, 

 deep red. Stem simple, 2-3 feet high, smooth. Leaves 

 oblong-lanceolate, slightly toothed. Bracts of the flowers 

 leaf-like. Low grounds. 



2. L. syphilit'iea, L. (GREAT LOBELIA.) Corolla rather 

 large, light blue. Stem hairy, simple, 1-2 feet high. Leaves 

 thin, acute at both ends, serrate. Calyx-lobes half as long 

 as the corolla, the tube hemispherical. Flowers in a dense 

 spike or raceme. Low grounds. 



3. L. infla'ta, L. (INDIAN TOBACCO.) Flowers small, 

 of an inch long, pale blue. Stem leafy, branching, 8-18 

 inches high, pubescent. Leaves ovate or oblong, toothed. 

 Pods inflated. ' Racemes leafy. Dry fields. 



4. L^ spica'ta, Lam. Flowers small, ^ of an inch long, 

 pale blue. Stem slender, erect, simple, 1-3 feet high, min- 

 utely pubescent below. Leaves barely toothed, the lower 

 spathulate or obovate, the upper reduced to linear bracts. 

 Racemes long and naked. Sandy soil. 



