Catalogue of the Flora of Nebraska. 31 
176. LESQUERELLA Watson. 
285. L. ENGELMANNI (Gray) Watson. Lawrence Fork, Kimball Co., 
Aug. 11 (Rydberg). 
286. L. GRracttis (Hook.). Watson. Waste ground along railroad. 
Weeping Water, June. 
This is quite a northern extension of its range. It may have 
been introduced through the agency of the R.R., being found only 
in this one place. It was, however, abundant and evidently 
spreading (Webber). 
177. CARDAMINE L. Bitter cress. 
287. C. Lacinrata (Muhl.) Wood. (Dentaria laciniata Muhl.) Peru. 
Communicated by Mr. A. H. Van Fleet (Bessey). 
178. ARABIS L. Rock cress. 
288. A. DENTATA (Torr.) Torr. & Gr. Low ground, rare. Lincoln, 
April (Webber). 
289. A. GLABRA (L.) Bernh. (4. perfoliata Lam.). Tower mustard. 
Dismal River, Thomas Co., July (Webber). 
290. A. HOLBCeLLII Hornem, Wooded cafions. Pine Ridge, June 
(Williams). Pumpkin Seed Valley, July 14 (Rydberg). 
179, NASTURTIUM R. Br. Water cress. 
291. N. optTusuM. Nutt. Ft. Clark, Nebraska (Haydenin Engelmann 
Herb.), Crete (Swezey), Minden (Hapeman), Big Springs (Ryd- 
berg). 
Prof. Swezey’s specimens differ somewhat from typical WN. 
obtusum, being less diffusely spreadiug and branched, ap- 
proacbing likely nearer N. sinuatum. Hayden’s specimens seem 
typical (Webber). 
292, N. PALUSTRE (L.) DC. var. ovate M. In mud, Sand Creek, 
Wahoo, Sept. 
A small plant with the leaves entire, obovate or oval, crenate or 
with a pair or two of small lobes at the base; pod oval. (Ryd- 
berg.) 
293. N. SESSILIFLORUM Nutt. Crete (Swezey). Wahoo Creek below 
Wahoo, Sept. (Rydberg). Lincoln, May (Webber). 
294, N. sINUATUM Nutt. Moist places along banks, Elmwood, June 
(Williams), Fairbury (in Herb, Univ. of Nebr.). Omaha and Crete 
(Swezey). Platte River, Kearney Co., June 15 (Rydberg). Lin- 
coln, May; Nebraska City, June (Webber). Pods and pedicels 
variously curved, forming a conspicuous character. 
71. CAPPARIDACEE. 
180. CRISTATELLA Nutt. 
295. C, gaMesir Torr. and Gr. Collected by Rev. Bates at Valentine, 
Aug. 1 (Rydberg). 
