Order 70.— LIGULIFLOR.E. 223 



V D\.k florets yellow, perfect. Kays pistillate. Camomile. Anthem'is. 



V Disk florets yellow, perfect. Euys neutral. Mai/-weed. Mahu'ta 



V Disk florets white, perfect. Rays pistillate. Yarrow. Achil'i.ea: 7 

 w Rays short, white, 3 or 4. W. S. Crown-beard. Vkuhes.'na. 

 w Rays very short, white, 5, ear-shaped. W. M. Pai'ti.e'nium 



w Rajs very lar^.e, purple, pendulous. J>u>:ple Cone-jlower. Ecmina'cea' 



X Leaves pmnately divided. Inner involucre of 8 united scales, f Daii'iia 



X Leaves simple. Receptacle conical with large chaff. \ Zin'ma 



X Leaves simple. Receptacle flat. Rays rose-color. Tick-seed. Cou^^^'^,^ 



X Leaves smiple. Receptacle flat. Rays white, short. W. Eciip'ta 



}• Heads in corymbs. Disk florets regularly 5-toothcd. r. Nardos'mia" 



y Heads solitary. Disk florets regularly 5-tootlied. S, i^a^BEL'ns 



y Hds. solitary. Disk flts. 2-lipped, outer lip 3-toothed, inner 2. S. Chapta'lia! 



Suh-order Second, LIGULIFLOR^, 



having all the florets ligulate (§ 06) and perfect, i. e., the heads radiant. 



2 Flowers bright yellow 3 



2 Flowers cream-color or purplish 5 



2 Flowers blue. Stems leafy, erect . . . . e 



8 Pappus none. Involucre of about 8 equal scales. . . .a 

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

 3 Pappus wholly of feathery bristles.. . .f 



8 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. ;•. ' " ' " Kipplewort. Lxmpsa'v. 



a Leaves partly opposite. Heads solitary or umbeled. Pappus 0. S. ApoW 

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



5 bristles, c. Dwarf Dandelion.. Kuro'iA. 



b Lvs. all or mostly rad., seldom pinn. Pap. seal, and bn.t. manv. Cyn'thia 



c Stemless leaves runcinate. Pappus white. Dandelion. "Tarax^cum' 8 



c Stems eafy or not. Pappus reddish or tawny. S. Pvruuopap'pus: 



c Stems leafy, leaves runcinate. Pappus silky-white, c. lettuce. Lxctv^c.k 



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



, p ... , . ^ Hawkweed. Hiera'cium. 9 



a 1 ap. silky white. Stemless; scapes each with one head. W. Trox'imon 

 d Pappus silky white. Stems bear prickly leaves, c. Sow Thisile. So^'chvs 

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



large. Common. Eastward. Succor^j. Cicno'niVM. 



e Pappus of many hair-like bristles. 3-8f. Blue Lettuce. Mulge^dum 



f Leaves on the stem linear, entire. Purpl. f Veffetahle Oyster. Tragopo'gon. 

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



IlaiL'khit. L^on'todow 



