CHICORY FAMILY 275 



Leaves, at least the lower ones, broad, oblanceolate in outline, and runcinate. 



3. P. ramosa. 

 Pappus merely scabrous or hirsutulous at the base. 



Leaves runcinate, but narrow; involucres 9-10 nun. high. 4. P. pauciflora. 

 Leaves linear-flliform; involucres 5-6 mm. high. 5. P. myrioelada. 



Annuals or biennials. 



Pappus-bristles not dilated at the base; heads usually subsessile on spike-Uke branches. 



6. P. virgata. 

 Pappus-bristles somewhat dilated at the base, often more or less united; heads panicu- 

 late. 

 Pappus plumose to the base or nearly so; plant tall and slender. 7. P. paniculata 

 Pappus plumose only above the middle; plant usually low and stout. 



8. P. exigua. 



4. NEMOSERIS Greene. Desert Chicory. 



Ligules 10—15 mm. long; beak of the achenes much shorter than the body. 



1. iV. neomexicana. 

 Ligules about 5 mm. long; beak of the achenes as long as the body. 2. JV. calif ornica. 



8. TRAGOPOGON (Tourn.) L. Salsify, Oyster Plant. 



Flowers yellow. 



Bracts S-9 ; flowers chrome yellow ; involucral bracts equalling or shorter than the 



flowers. • 1. T. pralensis. 



Bracts 10-13, rarely less; flowers lemon yellow; involucres longer than the flowers. 



2. T. duUus. 

 Flowers purple; involucral bracts much longer than the flowers. 3. T. porrif alius. 



6. HYFOCHAERIS L. Cat's-bar, Gosmore. l. H. radiala, 



7. ADOPOGON Neck. l. A. virginicus. 



8. CICHORIUM (Tourn.) L. Chicory. i. C. Invybus. 



9. UROPAPPUS Nutt. 



Awns 1-2 times as long as the short pappus-squamellae. 1. U. macrochaetus. 



Awns scarcely half as long as the long pappus-squamellae. 2. U. linearifolius. 



10. NOTHOCALAIS (A. Gray) Greene. 

 Bracts linear-lanceolate, scarcely spotted. 



Pappus distinctly paleaceous, of narrow sguamellae gradually attenuate. 



1. iV. troximoides. 

 Pappus of bristles only slightly broader and flattened at the base. 2. N. cuspidata. 



Bracts ovate or ovate-lanceolate, acuminate, conspicuously spotted. 3. JV. nigrescens. 



11. CALYCOSERIS A. Gray. 



Flowers rose-colored; achenes with the short beak about 5 mm. long. 1. C. Wrightii. 

 Flowers yellow; achenes with the long beak about 10 mm, long. 2. C. Parryi. 



12. YOtJNGIA Cass. 



Achenes conspicuously beaked; stem 1-2 dm. high. 1. Y. elegans. 



Achenes scarcely beaked, merely constricted below the disk ; stem 5 cm. or less high. 



2. Y. nana. 



13. GLYPTOPLEtXRA D. C. Eat. 



Corollas white, turning pink; leaves with broad white scarious margins and short broad 

 teeth. 1. G. marginata. 



Corollas yellow, turning pink; leaves with very narrow white .scarious margins and subu- 

 late, setlform teeth. 2. G. setulosa. 



14. MALACOLEPIS (A. Gray) HeUer. Snake's Head. l. M. Coulteri. 



15. MALACOTHRIX DC. Desert Dandelion. 



Divisions of the leaves filiform; plant scapose or nearly so. 1. M. glabrata. 



Divisions or lobes of the leaves not filiform; stem more or less leafy. 



Leaves sinuately runcinate; lobes entire or nearly so; achenes not winged. 



2. M. runcinata. 

 Leaves deeply pinnatifld; divisions toothed or lobed. 



Achenes wing-margined on 5 of the ribs; outer persistent bristles of the pappus 



present. 3. M. Torreyi. 



Achenes not winged ; outer persistent bristles of the pappus none. 



4. M. sonchioides. 



16. PLEIACANTHUS (Nutt.) Rydb. i. P. spinosus. 



17. LYGODESMIA D. Don. Wild Asparagus, Skeleton Weed, Prairie 



Pink. 



Perennials, with deep-seated rootstocks. 



Involucres 15-25 mm. high, 6-10-flowered. 1. L. grandiflora. 



