194 CAMPANULALES 
Some of the heads on stout spreading peduncles 2-10 cm. long. 
ta, C. intybus divaricatum. 
1. Cichorium intybus L. Chicory. 
Frequently found in alfalfa fields. Kennedy; Lincoln; O'Neill. 
1a. Cichorium intybus var. divaricatum DC. 
Brunswick; Lincoln. 
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 places in 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. 
Nebraska according to Britton’s Manual. 
5. Taraxacum. 896. 
Heads 3-5 cm. broad, achenes brownish green. 1.°T. taraxacum. 
Heads not over 2.5 cm. broad, achenes red. 2. T. erythrospermum. 
1. Taraxacum taraxacum (L.) Karst. Common Dandelion. 
Taraxacum officinale Weber. 
A common weed all over the state, especially in lawns. Crete; Lin- 
coln; Minden; Red Cloud; Wahoo. 
2. Taraxacum erythrospermum Andrz. Red-seeded Dandelion. 
More recently introduced, but common in many places. Hastings; 
Lincoln; Minden; Plainview; Red Cloud. 
6. Sonchus. 896. 
Leaves with acute auricles; achenes transversely wrinkled. 
: S. oleraceus. 
Leaves with rounded auricles; achenes not transversely wrinkled. 
1. S. asper. 
