198 Order CAMPANULALES 
Heads many-flowered or the flowers yellow. 
Achene and pappus 7-8 cm. long. 3. Tragopogon. 
Achene and pappus much shorter. 
Flowers blue. 7. Lactuca. 
Flowers yellow, orange or red. 
Achenes distinctly beaked. 7. Lactuca. 
Achenes not beaked. 
Inflorescence not a spike-like thyrsus; heads usually 
many-flowered. 
Achenes flattened; stem leaves auriculate-clasping. 
6. Sonchus. 
Achenes terete or prismatic; stem leaves not auricu- 
late-clasping. 
Involucral bracts with scarious margins; recepta- 
cle slightly bristly. 4. Malacothrix. 
Involucral bracts not scarious margined; recepta- 
cle naked. 
Pappus soft, white; achenes eee beri 
above. Crepis. 
Pappus of stiff, brown or prowaiene bristles: 
achenes not narrowed above. 11. Hieracium. 
Inflorescence in our species a_ spike-like thyrsus; 
heads 12-16-flowered. 12. Nabalus. 
Acaulescent plants; scapes 1-flowered. 
Leaves pinnatifid or sinuate-dentate. 5. Taraxacum. 
Leaves mostly entire. 9. Agoseris. 
1. Cichorium. 890. 
1. Cichorium intybus L. Chicory. 
oe found in alfalfa fields. Brunswick; Kennedy; Lincoln; 
’Nei 
2. Ptiloria (Stephanomeria). 894. 
Pappus plumose to the base, white. 1. P. ramosa. 
Pappus merely scabrous at the base, brown. 2. P. pauciflora. 
1. Ptiloria ramosa Rydb. 
In dry soil in the western part of the state. Scotts Bluff; Sioux 
county. 
2. Ptiloria pauciflora (Torr.) Raf. 
Nebraska? 
3. Tragopogon. 894. 
Flowers yellow. 1. T. pratensis. 
Flowers blue. 2. T. porrifolius. 
1. Tragopogon pratensis L. Yellow Goat’s-beard. 
In waste places in various parts of the state. Blue Hill; Grand 
Island; Minden; Ord; Plainview. 
2. Tragopogon porrifolius L. Oyster Plant; Salsify. 
In wet places. Blue Hill; Lincoln; Minden. 
4. Malacothrix. 895. 
1. Malacothrix sonchoides (Nutt.) T. & G. 
Western Nebraska, according to Britton’s Manual. 
