Fern Fiora or NEBRASKA—II 39 
Woops!a OREGANA D. C,. Eaton. 
This species apparently is confined to the western 
half of the state; it is frequent on dry open bluffs. 
Tuomas county: dry banks, Dismal river, July 12, 
1889, no, 6106, H. J. Webber; on hillside near Plummer 
ford, Dismal river, July 3, 1893, no. 1479, P. A. Rydberg. 
Brown county: Long Pine, collected by J. Conklin, 
no. 8 ex-herbarium G. D. Swezey; Long Pine, cafions, 
July 23, 1887, C. FE. Bessey. 
Dawes county: Belmont, dry banks, July 18, 1889, 
no. 6105, H. J. Webber. 
Sioux county: on buttes, August, 1892, no. 440, 
Albert F. Woods; Hat Creek, June 24, 1890, Tom A. 
Williams. 
MARSILEACEAE 
Marsitea vestita Hook. & Grev. Hairy pepperwort. 
In ponds, frequent in many places in the state. Dur- 
ing periods of drought terrestrial specimens may be 
found having hairy and narrow leaflets and these have 
been named the variety tenuifolia Und. & Cook. 
JEFFERSON couNTY: Meridian township, section 22, 
1891, EZ. F. Lange; Fairbury, September 3, 1892, E. F. 
pees 
FILLMORE couNnTY: Fairmont, August, 1890, and Aug- 
ust 4, 1891, J. H. Haughawout; August, 1890, no. 6113, 
labeled var. tenuifolia Und. & Cook, H. J. Webber; 
ponds, August 1, 1890, J. H. Haughawout, labeled var. 
tenuifolia Und. & Cook. 
WEBSTER county: Red Cloud, Rev. J. M. Bates. 
KEARNEY county: Minden, August 13, 1891, Dr. H. 
Hapeman, labeled var. tenwfolia?; prairies and sand- 
hills of central Nebraska, July 13, 1900, altitude 500 
meters, no, 6604, P. A. Rydberg. 
Deve. county: July 3, 1893, #. M. Gilliard. 
Box Burrs county: July 7, 1892, no. 275, J. G 
Smith & Roscoe Pound. 
