ORDER 70.—LIGULIFLOR 2. 223 
v Disk florets yellow, perfect. Rays pistillate. Camomile, ANTHEM’IS. 
v Disk florets yellow, perfect. Ruys neutral. May-weed. Marv’ta, 
v Disk florets white, perfect. Rays pistillate, Yarrow. Acuit’Lea, 7 
w Rays short, white, 8 or 4. W.S. Crown-beard, VenBesi/Na, 
w Rays very short, white, 5, ear-shaped. W. M. Partue’/Nium. 
w Rays very large, purple, pendulous. Purple Cone-flower. Ecurna’cua. 
x Leaves pinnately divided. Inner involucre of 8 united scales. + Dan/iia. 
=x Leaves simple. Receptacle conical with large chaff. t+ Zin’Nia. 
x Leaves simple. KHeceptacle flat. Rays rose-color. Tick-seed. Corzop’sis. 
x Leaves simple. Receptacle flat. Rays white, short. W. Eovip’ta. 
y Heads in corymbs. Disk florets regularly 5-toothed. r. Narpos’m1a. 
y Heads solitary. Disk florets regularly 5-toothed. S. Daisy. Bev’ iis. 
y Hds. solitary. Disk fits. 2-lipped, outer lip 8-toothed, inner2. S. Cuapra’Lia. 
Sub-order Second, LIGULIFLORA, 
having ail the florets ligulate (§ 96) and perfect, ¢. ¢., the heads radiant. 
2 Flowers bright yellow....3 
2 Flowers cream-color or purplish....5 
2 Flowers blue. Stems leafy, erect....¢ 
8 Pappus none. Involucre of about 8 equal scales....a 
83 Pappus double, the outer of scales, inner of bristles....b 
8 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....¢ 
4 Fruit not lengthened into a beak, pappus sessile....d 
5 Pappus consisting of equal, feather-like bristles....£ 
5 Pappus of simple, hair-like bristles, abundant....g 
= Leaves all alternate. Heads panicled. r. Wipplewort. Lampsa’na. 
a Leaves partly opposite. Heads solitary or umbeled. Pappus0. S. Apo’eon. 
b Leaves all radical, pinnatifid-toothed. Pappus scales 5, with 
5 bristles. ¢. Dwarf Dandelion, Krie’ta. 
b Lvs. all or mostly rad., seldom pinn. Pap. scal.and brist. many. Cyn’rH1. 
c Stemless leaves runcinate. Pappus white, Dandelion. Tarax’acum. 8 
c Stems leafy or not. Pappus reddish or tawny. S. PyRryopaP’pts, 
¢ Stems leafy, leaves runcinate. Pappus silky-white. c. Lettuce. Lacrv’oa. 
ad Pappus brownish. Stems mostly leafy, with many heads. ¢. 
Hawkweed, Hiera’cium. 9 
d Pap. silky white. Stemless; scapes each with one head. W. Trox’mon. 
d Pappus silky white. Stems bear prickly leaves. ¢. Sow Thistle. Son’cuvs. 
e Pappus of many small scales. Branched stems 2f. high. Heads axillary, 
large. Common. Eastward. Suecory. CicHo’RIUM. 
e Pappus of many hair-like bristles. 3-8f. Blue Lettuce. Murer’pice. 
f Leaves on the stem linear, entire. Purpl. t Vegetable Oyster. TRAGoPo’GON. 
f Leaves all radical, toothed. Flowers yellow. Fruit taper-beaked. 
Hawkbit. Leow’ropom. 
