PLAXTAGIXACEAE 93 



1. Androsace. 714. 



1. Androsace occidentalis Piirsh. 



In dry soil throughout the state. Crete; Fairbury; Franklin; Lincoln; 



Nebraska City; Red Cloud; Wahoo; Valentine. 



2. Steironema. 716. 



Leaves ovate to ovate-lanceolate on long ciliate petioles. 



1. S. ciliatum. 

 Leaves linear, sessile or nearly so. 2. S. quadriflorum. 



1. Steironema ciliatum (L.) Raf. Loosestrife. 

 Common in low prairies and meadows throughout the state; often 

 found in the edges of thickets, in ditches and along streams. Anselmo; 

 Aten; Cherry County; Kearney; Lincoln; Minden; Sioux County; 

 Talmage. 



2. Steironema quadrifoiia (Sims.) Hitch. 



In the Republican valley, not common. Franklin; Macon; Riverton. 



3. Naumbergia. 717. 



1. Naumbergia tliyrsiflora (L.) Duby. Tufted loosestrife. 



Frequent in marshes and edges of pools and streams in the sand- 

 hills. Ewing; Grand Rapids; Grant County; Newark; Plainview; Vdi- 

 entine. 



4. Anagallis. 718. 

 1. Anagallis arvensis L. 

 Lincoln. 



5. Centrunculus. 718. 



1. Centrunculus minimus L. 



Rare in dry soil. Atkinson; Fairbury; Fairfield; Johnson. 



6. Dodecatheon. 719. 



1. Dodecatheon radicatum Greene. 



Rare in the western part of the state. Paxton. 



2. PLANTAGINACEAE. 

 Plantago. 855. 



Leaves, ovate, lanceolate or spatulate. 



Leaves ovate. 

 Pyxis ovoid, circumscissile at the middle. 1. P. major. 



Pyxis oblong, circumscissile much below the middle. 2. P. rugelil. 

 Leaves lanceolate or spatulate. 



Corolla of fertile flowers spreading. 

 Pyxis circumscissile at the middle. 3. P. lanceolata. 



Pyxis circumscissile below the middle. 4. P. eriopoda. 



Corolla of the fertile flower erect. 8. P. virginica. 



Leaves linear or filiform, 1-8 mm. mide. 

 Bracts not much longer than the flowers. 



Leaves 3-8 mm. wide, spike dense. 5. P. purshii. 



Leaves 1 mm. wide, spike loose-flowered. 9. P. elongata. 



