148 MYRTALES 



2. Megapterium missouriense (Sims.) Spach. 



Dry limestone bluffs mostly along the Blue River. Beatrice; Fair- 

 bury; Homesville; Salem; Steele City; Wymore. 



13. Galpinsia. 662. 



1. Galpinsia lavandulaefolia (T. & G.) Small. 



On dry prairies in the western part of the state. Deuel County. 



14. IVIeriolix. 662. 



1. Meriolix serrulata (Nutt.) Walp. 



Common on dry prairies all over the state. Antelope County; Deuel 

 County; Fairbury; Franklin; Indianola; Kearney; Neligh; Pine Ridge; 

 Ponca; Plummer Ford; Sheridan County; Sioux County. 



15. Gaura. 662. 



Plants 1.5-6 dm. high, bracts persistent. 2. G. coccinea. 

 Plants 6-15 dm. high, bracts deciduous. 



Flowers 3-4 mm. broad, pink. 1. G. parviflora. 



Flowers 8-10 mm. broad, flowers white turning pink. 



Stems hirsute, leaves thin. 3. G. biennis. 



Stems puberulent, leaves relatively thick. 4. G. pitcher!. 



1. Gaura parviflora Dougl. 



A common weed over the whole state. Crawford; Franklin; Lincoln; 

 Newark; St. James. 



2. Gaura coccinea Pursh. 



Common on dry prairies and waste places throughout the state. Bel- 

 mont; Box Butte County; Hastings; Kearney; Lincoln; Ponca; Sioux 

 County; Thedford; Valentine. 



3. Gaura biennis L. 



A common weed in the eastern part of the state. Broken Bow; Crete; 

 Kearney; Lincoln; Seward County. 



4. Gaura pitcher! (T. & G.) Small. 

 Nebraska according to Britton's Manual. 



16. Stenosiphon. 663. 



1. Stenosiphon linifolium (Nutt.) 



In the valley of the Republican. Franklin; Red Cloud. 



17. Circaea. 663. 



1. Circaea lutetiana L. 



In woods mostly in the eastern part of the state. Bellevue; Dismal 



River; Franklin County; Grand Island; Pishelville; Plummer Ford. 



3. HALORRHAGIDACEAE. 

 Myriophyllum. 665. 



Floral leaves small, usually shorter than the flowers, fruit smooth or 

 nearly so. 1. M. spicatum. 



Floral leaves large, 5-12 mm. long, much longer than the flowers, 

 fruit rough. 2. M. pinnatum. 



