OUDKK 71. LOBELIADS. 243 



2 H. panicula'tum. Panicled H. Stem leafy, widely panicled. Leaves fine-toothed 

 8 H. veno'sum. Robin's Plantain. Stem almost leafless, corf mbed. Lvs. entire. 



4 H. scabrum. Hough, H. Heads corymbed. Plant stiff', rongh-kairy. 

 5 H. longip'ilum. Long-haired H. Plant clothed witli straight bristles 1' loug'. W 

 f\ H. Grono'vii. Gronovim" 1 II. Plant slender, quite hairy below. 



10. NAB'ALUS. Lion's-foot 



Involucre cylindrical, double, the inner of many linear scales in one 

 row, the outer of a few short scales at base. Receptacle naked. Achenia 

 smooth, striate, not beaked, crowned with a copious, straw-colored or 

 brownish hair-like pappus. Erect herbs, with a thick, tuberous, bit- 

 ter root. Heads 5-18-flowered, white or straw-colored, often purplish. 

 Aug. -Oct. 



* Heads glabrous, pendulous. Leaves multiform in the same plant a 



Heads hairy, erect or nodding. Leaves reniform, undivided 7-9 



a Tall (2-4f. high). Heads (8-12-flowered) in a corymb-like panicle. . . .1, 2 



a Tall (2-6f. high). Heads in a long, raceme-like panicle.. . .3, 4 



a Low (5-10' high). Heads racemed. Found only on high mountains 5, <J 



1 N. al'ba. White L. Pappus cinnamon-color. Leaves hastate, often lobed. 



2 N. Fra'seri. FraseSs L. Pappus straw-color. Leaves deltoid, often cleft. 



3 N. altis'simus. Tall L. Heads 5-flowered. Leaves divided, or cleft, or entire. 



4 N. virga'tus. Mod L. Heads 8-12-flowered. Lowest leaves pinnatifld 



5 N. na'nus. Dwarf L. Outer involucre of short-ovate, close scales. 



6 N. Boot'tii. Boo'fs L Outer involucre of linear, loose scales. 



7 N. racemo'sus. Racemed L. Heads nodding, 9-12-flowered. W. M. 



8 N. crepidin'ens. Crepis L. Heads nodding, 25-35-flowered. W. S. 



9 N. ao'per. Rough L. Heads erect, 11-14-flowered. Panicle racemed. W. 



ORDER LXXI. LOBELIACE.E. Lobeliads. 



Herbs with alternate leaves, scattered flowers, and oftdn milky juice; 

 calyx superior ; corolla, irregular, 5-lobed, tube split down to the base ; 

 stamens 5, united into a tube both by the filaments and anthers ; 

 wary adherent to the calyx tube ; styles united into one ; 

 tig ma fringed ; fruit a 2-3-celled, many-seeded capsule. 



LOBE'LIA. Cardinal-flower. Indian Tobacco. 

 The two upper lobes of the irregular corolla are smaller than the three 



