32 H. J. Webler — 



72. hypericace.e. 



181. HYPERICUM L. St. John's- wort. 



296. H. canadense L. Common in low "rounds. Thedford, July 14 

 (Webber). Ashland (Williams). H. mutilum L. of Swezey's 

 Nebr. Fl. Plants p. 5, is probably to be referred here. 



297. H. canadense L. var. majus Gray. Wet Meadows. Saunders 

 Co., June (Rydberg). Lowell, July 11 (Webber). 



298. H. virginicum L. (Elodes virginica Nutt. and E. campanulata 

 Pursh). Antelope Co. (Webber). 



73. GERANIACEJE. 



182. ERODIUM L' Her. Stcrksbill. 



299. E.cicutarium (L.) L'Her. Alfllaria. Lincoln. Along sidewalks, 

 probably introduced in hay. Adventive from Europe (Williams). 



74. LINACE^E. 



183. L1NUM L. Flax. 



300. L. rigidum Pursh. Prairie flax. Very common on the prairies 

 of central and western Nebraska. Superior, Brewster, Long Pine, 

 Lewellen (Swezey) ; Deuel Co., July (Rydberg); Thedford, July 

 14; Anselmo, July; Broken Bow, July; Belmont, Aug. (Webber). 



A form collected at Hat Creek Basin Aug. 2, Prof. Trelease 

 notes as having the habit of var. puberulum Engelm. (Webber). 



301. L. usitatissimum L. Cultivated Flax. Escaped to low prairies. 

 Broken Bow, July (Webber). 



75. SAPINDACE^E. 



184. .ESCULUS L. Horse-chestnut, Buckeye. 



302. A. glabra Willd. Richardson and Pawnee counties (Bessev). 



76. EUPHORBIACE.E. 



185. EUPHORBIA L. Spurge. 



303. E. cuphosperma (Engelm.) Boiss. A few specimens collected 

 Aug., 1890, in a canon running north from Lawrence Fork, Banner 

 Co. 



Leaves lance linear, entire or with a few teeth on the rev- 

 olute margin. Seeds short, triangular, truncate at the base, 

 wrinkled aud tuberculate, with a minute caruncle. Belongs to the 

 E. heterophylla group (Rydberc). 

 30L E. fendleri Torr. & Gr. " Sand draw," Cheyenne Co., Aug. 



The seeds are described in Coulter's Manual as irregularly 

 punctate. In the original description in Pacific R. R. Rep. it reads 

 ** a little rugose transversely," which agrees with Nebraska 

 specimens (Rydberg). 



