VASCULAR PLANTS OF NORTH DAKOTA 469 
682. Nezera sulcata (Riddell) Nwd. in Am. Midl. Nat. 
Piles ArS2.. (1923). 
Linum sulcatum Riddell, Suppl. Cat. Ohio PL ros(183G): 
Cathartolinum sulcatum (Riddell) Small, N. Am. Fl. 25: 78. 
(1907). 
Linum Boottii Planch. Lond. Journ. Bot. 7: 475. (1848). 
Linum simplex Wood, Bot. & Flor. 66. (1870)? 
Leeds, Butte. 
683. Nezera rigida (Pursh) Nwd. in Am. Midl. Nat. |. c 
Linum rigidum Pursh) Fl. Am. Sept. 210. (1814.) Catharto- 
linum rigidum (Pursh.) Small, J. c. 82. 
Butte, Pleasant Lake, Minot. 
Family 69. RUTACEAE Jussieu Gen. 296. (1789). 
XANTHOXYLUM Pluck. Alm. 396. (1696), also Almath. 
214..(1705); cor. P. Miller, Gard. Dict. ed. 8: 2. (1768). 
684. Xanthoxylum americanum Mill., 1. c 
Fargo (O. A. Stevens). 
Family 70. POLYGALEAE Reichenb. Consp. 120. (1828). 
POLYGALA Diosce. (?) Polygalon Diosc. (?) 4: 196. Polygala 
Plinius 27: 12 & 96, also Linn. Gen. 315. (1754), inclusive of Hezs- 
terra Linn. Gen. 357. (1737) & Polygaloides Tour. and Chamae- 
buxus Tour. Polygala Tour. Elém. 143. (1694). 
685. Polygala verticillata Linn. Sp. Pl. 706. (1753). 
Leeds, Butte. 
686. Polygala Senega Linn. Sp. Pl. 704. (1753). Snakeroot.* 
Leeds, Butte, Oberon, Hurricane Lake. 
687. Polygala Torreyi Don. Syst. I: 360. (1831). 
Polygala alba Nutt. Gen. II: 87. (1818), not P. alba Buchoz, 
Dict. III: 38. (1770). Vide Greene, Pittonia III: 307. (1898). 
Minot. 1 
Family 71. EUPHORBIACEAE J. St. Hil. Expos. Fam. 
276. (1805). 
TITHYMALUS Hippocrates. Dioscorides 4: 162. Theo- 
phrastus Hist. Pl. 9: 12. Plinius. Tour. and most of the older 
botanists. Referred by Linn. to Euphorbia Gen. 208. (1754). 
Euphorbium Isnard (1720). Euphorbia of the ancients=E. anti- 
quorum is quite a different type. 
*In this State this is the only medicinal plant for which there is a 
market, though on account of its low price, only the Indians avail themselves 
of this opportunity for earning. 
