160 
CACTACESA. 
Cactus viviparus Nutt. Fraser's Cat. (1813). 
Here and there in the sand hills around Thedford, June 20, ete., (No. 1879). 
Opuntia humifusa Raf. Ann. Nat. 15 (1820); 0. rafinesquii Engelin, Pac. R. Rep. 
iv, 41 (1856), 
Common throughout the sand hills: Dismal River, June 26; Plummer Ford, July 
6 and 8 (No. 1447). 
Opuntia polyacantha Haw. Syn. Pl. Suce. Suppl. 82 (1819); O. missouriensis DC, 
Prodr, iii, 472 (1828). 
Above Plummer Ford, July 5 (No. 1501)). A young stage with long, cylindrical, 
finger-like joints was collected near the Forks of Dismal River, July 11 (No. 1526). 
UMBELLIFER. 
Sium cicutezfolium Gmelin, Syst. ii, 482 (1791). 
In the lakes of Grant County, July 29 to 81; South Dismal River, August 14 
(No. 1615), 
New to Nebraska, 
Berula erecta (IHuds.) Coville, Contr, Nat. Herb. iv, 115 (1893); Siuwm erectum 
Huds, Fl. Angel. 103 (1762). 
Common in and along Dismal River: Plummer Ford, July 5 (No. 1497); South 
Dismal River, August 4 (No, 1517). 
Cicuta virosa maculata (L.) Coult, & Rose, Rev. Umb. 130 (1888); Cieuta macu- 
lata L. Sp. Pl. i, 256 (1753), 
Common in the rivers: Plummer Ford, July 4; Mullen, July 17; Forks of Middle 
Loup River, July 26 (No. 1491). 
Cicuta bulbifera L. Sp. Pl. i, 255 (1753). , 
Inswampy places in Grant County, August 4 and September 20; Thedford, Sep- 
tember 7 (No. 1737). 
Sanicula canadensis L. Sp. Pl. i, 285 (1753), 
In woods, near Plummer Ford, July 3 (No. 1462), 
CORNACE A. 
Cornus stolonifera Mx. I'l. i, 92 (1803). 
Common along the streams: Dismal River, June 27; Plummer Ford, July 6; South 
Dismal River, August 14 (No, 1435); Norway, June 12; Plummer Ford, July 3; Forks 
of Dismal River, July 11 (No, 1414). The latter is a form with slightly smaller 
leaves and more wooly pubescence. 
CAPRIFOLIACES. 
Symphoricarpos occidentalis Hook. I'l. Bor. Amer, i, 285 (1834). 
Common on the prairies: Thedford, September 8; Dismal River, June 28 and 
July 3; Hooker County, July 17 and 27 (No, 1442), 
RUBIACESA. 
Galium trifidum L, Sp. Pl. i, 105 (1753), 
A small form was collected in wet meadows at Norway, June 22; near Whitman, 
July 31 and September 20 (No. 1418). No. 1840 is a taller form, which is named 
G. tinctorum L. by A, A. Heller: Dismal River, June 26. 
Galium trifidum latifolium Torr, Fl. U. S8., 165 (1824), 
In a wet meadow, near Whitman, July 31 (No. 1815). 
