344 METASPERMAE OF THE MINNESOTA VALLEY. 



Euphorbia glyptosperma ENGELM. Bot. Mex. Bound. II, 



187 (1859). 



E. polygonifolia HOOK. Fl. Bor.-Am. II, 140 (1848) in part. 

 Wats, and Coult., Gray's Man. 6 ed. 453; Webb. ,F1. Neb. 123; Upham, 

 Fl. Minn. 123; Mac., Fl. Can. I, 425; Coult., Fl. Colo. 328; Wats., Fl. Calif. 

 II, 74; Wats., King Exp. 320; Roth., Wheel. Exp. 246. 



North America; Ont., Saskatchewan, Brit. Col. to 

 Pac.; S. to Minn., Dak., Neb., Mo., 111., Wise, and Colo. 



Minn, valley: Throughout; common; sandy places and 

 embankments. 



HERB.: Sheldon 966, Sleepy Eye; Sheldon 1557, Lake 

 Benton; Sheldon 1169, New Ulm; Sheldon 1597, Lake Benton; 

 Bollard 161, Chaska; Taylor 784, Glenwood; Sheldon 1102, 

 Springfield; Bollard 527, Cleary's lake, Scott Co.; Holzinger 

 204, Winona Co.; Oestlund 166, Minneapolis; Herrick 264, Min- 

 neapolis; Holzinger 205, Winona Co. ; Herb. Sheld. 1925, Minne- 

 apolis. 



Euphorbia serpyllifolia PERS. Syn. II, 14 (1807). 



Wats, and Coult., Gray's Man. 6 ed. 453; Webb., Fl. Neb. 123; Mac., 

 Fl. Can. I, 424; Upham, Fl. Minn. 123; Wats., Fl. Calif. II, 74; Coult., Fl. 

 Colo. 326; Greene, Fl. Fran. 91; Wats., King Exp. 320; Roth., Wheel. Exp. 

 246; Engl. Pax, Nat. Pflanz. Ill, 5, 105. 



North America: Columbia river, Moose mt., N. W.T., 

 Saskatchewan; S. along Pac. to Monterey and Gt. Basin region 

 to Tex. and Mex.; E. to Kan., Neb., Dak. and Minn. 



Minn, valley; Throughout; frequent; sandy or waste 

 places or embankments. 



HERB.: Taylor 1152, Glenwood; Herb. Sheld. 1900, 

 Cedar lake, Hennepin Co. 



Euphorbia geyeri ENGELM. PL Lindh. I, 52 (1845). 



Wats, and Coult., Gray's Man. 6 ed. 452; Upham, Fl. Minn. 123; Webb., 

 Appx. Neb. 33. 



North America: 111., Wise., Minn., Kan., Neb. to Tex. 

 Minn, valley: Reported from N. E. district;, sandy 

 places or along railway embankments. 



LIX. STELLARIACEAE, Water-Star wort 

 Family. 



Benth. and Hook., Gen. PL I, 673 (1862) sub Halorageae; Baillon, 

 Hist. PI. V, 250(1874) sub Euphorbiaceae; Pax in Engler and Prantl, Nat. 

 Pflanz. 3, V, 120 (1890) CalUtrichaceae; Kndlicher, Gen. PI. 268 (I840j 

 Callitrichinae. 



Genera: 1; cosmopolitan in fresh waters; aquatic. 

 Species: 1-2; 25 (Hegelmaier). 



