170 CA.MPAXULALES 



Rock County; Scotts Bluff County; Minden; Thedford; Whitman; 

 Valentine. 



4. Laciniaria. (Liatris.) 925. 



Involucral bracts acute. 

 Heads 16-60 flowered. 



Bracts with spreading tips; heads broad. 1. L. squarrosa. 



Bracts more erect; heads narrow. 



la. L. squarrosa var. intermedia. 

 Heads 4-6 flowered. 



1.5-8 dm. high, bracts appressed, pappus vary plumose. 



2. L. punctata. 

 5-15 dm., high, bracts with spreading tips, pappus scarcely plu- 

 mose. 3. L. pycnostachya. 

 Involucral bracts obtuse. 



Heads 15-45 flowered, usually peduncled, 4. L. scariosa. 



Heads 5-13 flowered, mostly sessile. 5. L. spicata. 



1. Lacinaria squarrosa (L.) Hill. Blazing Star. 

 Common in prairies all over the state. Anselmo; Dismal River; Lau- 

 rel; Long Pine; Nebraska City; Talmage; Valentine, 



la. Lacinaria squarrosa var. intermedia (Lindl.) Porter. 

 Indianola; Pishelville; Plummer Ford. 



2. Lacinaria punctata (Hook.) Kuntze. 



Common in dry soil over most of the state. Ayr; Bellevue; Cams; 

 Deuel County; Hat Creek Basin; laurel; Lincoln; Plummer Ford; 

 Valentine; Whitman; Wymore. , 



3. Lacinaria pycnoctachya (iMichx.) Kuntze. 



In meadows in the eastern part of the state. Lincoln; Nebraska City. 



4. Lacinaria scaricsa (L.) Hill. 



In dry prairies in the eastern part of the state. Crete; Laurel; Long 

 Pine; Nebraska City; St. Paul. 



5. Lacinaria spicata (L.) Kuntze. 



In bottoms and low prairies throughout most of the state. Atkinson; 

 Benkleman; Cams; Kearney; Scotts Bluff; Valeniine. 



Tribe. 3. ASTEREAE. 



Ray flowers, when present, yellow. 



Pappus of scales or awns, sometimes deciduous, never of numerous 

 capillary bristles. 

 Heads small not over 4 mm. high, few flowered. 1. Gutierrezia. 



Heads large, many flowered, involucre viscid. 2. Gr^indella. 



Pappus at least in part of numerous capillary bristles. 



Pappus double, the inner of capillary bristles, the outer much 

 shorter of scales or bristles, heads large, leaves neither 

 evergreen nor spinulose-dentate. 3. Chrysopsis. 



Pappus wholly or capillary bristles, heads small or leaves ever- 

 green or spinulose-dentate. 

 Heads discoid. (See also Brancliyactis and Leptilon.) 



Bracts imbricated in several series. 4. Clirysotliamnus. 



Bracts little imbricated mostly in one series. 15. Erigeron 



