834 TH1 FLOKA. 



v Disk florets yellow, perfect. Kuya pistillate. Camomile. ANTHEM'IS. 



v Disk florets yellow, perfect. Eiiys neutral. May-weed. MARU'TA. 



v Disk florets white, perfect. Kays pistillate. Yarrow. ACHII/LEA. 7 



v Rays short, white, 3 or 4. W. S. Crown-beard. VERBKSI'NA. 



w Rays very short, white, 5, ear-shaped. W. M. PARTHE'NIUM. 



m Bays very large, purple, pendulous. Pai'ple Cnne-flower. ECHINA'CEA. 



* Leaves pinnately divided. Inner involucre of 8 united scales, t DAH'LIA. 



x Leaves simple. Eeceptacle conical with large chaff, t ZIN'NIA. 



x Leaves simple. Receptacle flat. Kays rose-color. Ttck^eed. COREOP'SIS. 



x Leaves simple. Receptacle flat. Rays white, short. W. ECLIP'TA. 



v Meads in corymbs. Disk florets regularly 5-toothed. T. NARDOS'MIA. 



y Heads solitary. Disk florets regularly 5-toothed. S. Daixy. BEL'LIS. 



y Hds. solitary. Disk fits. 2-lipped, outer lip 3-toothed, inner 2. S. CHAPTA'LIA 



Sub-order Second, LIGULIFLOR^, 



having all the florets ligulate ( 96; and perfect, t. ., the heads radiant. 

 2 Flowers bright yellow .... 3 



2 Flowers cream-color or purplish 5 



2 Flowers blue. Steins leafy, erect e 



8 Pappus none. Involucre of about 8 equal scales a 



3 Pappus double, the outer of scales, inner of bristles b 



8 Pappus wholly of feathery bristles f 



3 Pappus wholly of hair-like bristles, generally abundant.. ..4 



4 Fruit bearing the pappus on its slender beak c 



4 Fruit not lengthened into a beak, pappus sessile. . . .d 



5 Pappus consisting of equal, feather-like bristles. . . .f 



5 Pappus of simple, hair-like bristles, abundant g 



a Leaves all alternate. Heads panicled. r. Nipplewort. LAMPSA'NA. 



a Leaves partly opposite. Heads solitary or umbeled. Pappus 0. S. APO'OON. 



b Leaves all radical, pinnatifid-toothed. Pappus scales 5, with 



5 bristles, c. Dwarf Dandelion. KRIO'IA. 



b Lvs. all or mostly rad., seldom pinn. Pap. seal, and brist. many. CTN'THIA. 

 c Stemless leaves mncinate. Pappuo white. Dandelion. TARAX'ACUM. 8 



c Steins leafy or not. Pappus reddish or tawny. S. PYRRHOPAP'PCS. 



c Stems leafy, leaves runcinate. Pappus silky-white, c. Lettuce. LACTU'OA. 



d Pappus brownish Stems mostly leafy, with many heads, e. 



Hawkwted HIERA'CICM. c 



d Pap. silky white. Stemless ; scapes each with one head. W. TROX'IMON. 



d Pappus silky- white. Stems bear prickly leaves, c. Sow Thistle. SON'OHCS. 

 Pappus of many small scales. Branched stems 2f. high. Heads axillary, 



large. Common. Eastward. Succory. CICHO'RIUM. 



e Pappus of many hair-like bristles. 3-8f. Blue Lettuce. M L-LGE'DICM. 



f Leaves on the stem linear, entire. Purpl, t Vtgetuble Oyster. TRAGOPO'OON. 



f Leaves all radical, toothed. Flowers yellow. Fruit taper-beaked. 



Hawkbit. LH^V'TGDON 



