Krigia. . . COMPOSITE. 409 



Suborder IF. LIGULIFLORiE. DC. 



Flowers all ligulate and perfect. 



Tribe VI. CICHORACE^. Vaill. 

 Style cylindraceous above. 



CONSPECTUS OF THE GENERA. 



Subtribel. HYOSERIDE-t;. Parpuseithcr wholly or partly composed of chafty or squamellate scales. Receptacle 

 not chaffy. • ■ 



* Involucre nearly simple, equal. 



46. Krigia. Pappus of 5 broad chaffy scales and 5 alternate bristles. 



47. Cynthia Pappus of numerous short squamellate and capillary bristles. 



** Involucre duulile or imbricated. 



48. CiCHORiCM. Pappus short, of numerous small chaffy scales. 



Subtribe 2. LACTUCE.1E. Pappus capillary, not plumose. Receptacle not chaffy. 



49. HiERACir.M. Pappus rough, in a single series. Heads 20 - many-flowered (yellow). Achenia oblong or columnai. 



* Pappus dirty white or tawny, fragile, 



50. Naealcs. Pappus rough, copious. Heads 5 - 30-flowered (not yellow), nodding. Achenia linear-oblong, terete. 



*• Pappus bright white (except in one Mulgedium). 



51. Taraxacum. Involucre double, in 3 scries. Achenia striate-angled, commonly muricate, with a long fiUform beak. 



— Stemless. 



52. Lactuca. Achenia obcompressed, flat, abruptly produced into a filiform beak. Pappus very soft and white. 



53. MuLGEDiuM. Achenia compressed, tapering into a short or thick beak. Pappus bright white or tawny. Flowers 



blue. 



54. SoNCHUs. Achenia compressed, not beaked. Pappus very soft and fine, bright white. Involucre becoming swollen 



at the base. Flowers yellow. 



Subtribe 1. Hyoseride^, Less. Receptacle not chaffy. Pappus simple or double, either 

 ivholly or partly chaffy, squamellate or coroniform. 



46. KRIGIA, Schreb. ; DC. prodr. 7. p. 88. DWABF DANDELION. 



[ Named in honor of David Krieg, a German botanist.] 



Heads 15 - 30-flowered. Scales of the involucre 6 - 13, somewhat in a double series, equal. 

 Receptacle naked. Achenia turbinate, many-striate, somewhat 5-angular. Pappus double ; 

 the exterior of five broad and rounded scarious chaffy scales ; the inner of as many slender 

 bristles alternating with the scales. — Small annual herbs, branching from the base. Leaves 

 mostly lyrate or toothed, radical. Heads small, solitary, on long slender scape-like branches. 

 Flowers yellow. 



[Flora.] " 52 



