14 LILIALES 



Perianth partly brown, seeds 1 mm. long. 2. J. balticus. 



Inflorescence evidently terminal. 



Leaves not septate. 



Flowers bibracteolate, not in true heads. 



Annuals, inflorescence one-third the length of the plant. 



3. J. bufonius. 



Perennials, inflorescence not one-third as long as the plant. 

 Auricle at the top of the sheath prolonged beyond the point 

 of insertion, often 2 mm. long. 4. J. tenuis. 



Auricles scarcely prolonged beyond point of insertion. 



Auricles membranous, whitish, perianth scarcely spreading. 



5. J. interior. 

 Auricles cartilaginous, yellow or yellowish brown, perianth 

 spreading. 6. J. dudleyi. 



Flowers not bibracteolate; in true heads. 

 Stamens 3. 



Petals setiform; acuminate at the apex. 7. J. setotus. 



Petals obtuse or slightly mucronate. 8. J. marginatus. 



Stamens 6. 9. J. longistylus. 



Leaves septate. 



Branches of the inflorescence short, rarely more than twice the 



diameter of the heads. 



Heads 7-8 mm. in diameter; petals usually longer than the 



sepals. 10. J. nodosus. 



Heads over 10 mm. in diameter; sepals longer than the petals. 



11. J. torreyi. 



Braches of the inflorescence long, many times as long as diameter 



of the heads. 12. J. richardsonianus. 



1. Juncus filiformis L. 

 Reported from Banner County. 



2. Juncus balticus Willd. 



On sand-bars and sandy margins of lakes and streams. Alliance; 

 Broken Bow; North Platte; Valentine; Wood River. 



3. Juncus bufonius L. Toad Rush. 

 Common in wet places in the sand-hills. Banner County; Custer 

 County; North Platte; Pine Ridge; Sheridan County; Valentine. 



4. Juncus tenuis Willd. Slender Rush. 

 Common in wet meadows throughout the state. Banner County; 

 Broken Bow; Crete; Hat Creek Basin; Hooker County; Kennedy; 

 Lincoln; Weeping Water. 



5. Juncus interior Wiegand. 

 Boelus; Red Cloud; Riverton. 



6. Juncus dudleyi Wiegand. 



Common in meadows over most of the state. Callaway; Gordon; Long 

 Pine; Loup City; Scotia; Thedford; Wood River; Wymore; Valentine. 



7. Juncus setosus (Coville) Small. 

 Juncus marginatus setosus Coville. 



Reported only from Lorig Pine. 



8. Juncus marginatus Rostk. 



In moist places mostly in the sand-hills. Brewster; Dismal River; 

 Ewing; Long Pine; Minden; Valentine. 



