232 THE FLOEA. 



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

 8 H. veno'smn. Bohins Plantain. Stem almost leafless, corymbed. Lvs. entire. 



4 H. scabnun. Bough H. Heads corymbed. Plant stiff, rough-hairy. 

 5 H. longip'ilum. Long-haired H. ' Plant clothed with straight bristles V long. W. 

 6 ' H. Grono'vii. Gronomua' E. 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 beaied, crowned with a copious, straw-colored or 

 brownish hair-Kke 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 



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



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



i Low (5-10' high). Heads racemed. Found only on high mountains. . . .5, 6 



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



2 W. rra'seri Fraser^s L. Pappus straw-color. Leaves deltoid, often cleft. 



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



4 W. virga'tus. Rod, L. Heads 8-12-flowered. Lowe.sfleaves pinnatifid. 



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



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



7 N. racemo'sns. Bacempd L. Heads nodding, 9-12-flowered. W. M. 



8 W. crepidm'eus. Ore/pis L. Heads nodding, 25-35-flowered. W. S. 



9 H. as'per. Bough L. Heads erect, 11-14-flowered. Panicle racemed. , W. 



Order LXXI. LOBELIACB.^. LobeUads. 



Herbs with alternate leaves, scsitterei flowers, and often jmlkj juice; 

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

 stame-m 5, united into a tube both by the filaments and anthers ; 

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

 stigma fringed ; fruit a 2-3-ceUed, many-seeded capsule. 



LOBE'LIA. Cardinal-flower. Indian Tobacco. 



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



