THE AMERICAN BOTANIST 55 



RUBIACEAE. 



Partridge berry (Mitch el la re pens). White. 

 Button bush (Cephalanthus occidcntalis) . White. 

 Northern bedstraw (Galium boreale). White. 



CAPRIFOLIACEAE. 



Twin flower (Linnaea borealis). White. 

 Elder (Sambucus Canadensis). White. 



CUCURBITACEAE. 



Balsam root (Balsamorhim sagittata). Yellow. 



COMPOSITAE. 



Pasture thistle (Cirsium pumilum). Pink. 

 Cone flower (Lepachys columnaris) . Yellow. 

 Climbing boneset (Mikania scandens). White. 

 Sweet Colt's foot (Petasites palmatus). Pink. 

 Centaurea (Centaur ca Americana) . Pink. 



A NEW OXYTROPIS FOR NEBRASKA 



Oxytropis Lamberti Tenuifolia. 



By J. M. Bates. 



/^"^N June 5, 1915, Prof. Gilmore of the State University 

 ^-^ collected at Thurston, in northeastern Nebraska, a unique 

 form of Oxytropis to which I would call attention. The whole 

 plant is green with thin strigose pubescence except the calyx 

 which is densely canescent. The stems rise from a stout 

 caudex and are a foot high. The leaves range up to 19 centi- 

 meters long and are very strict, and the leaflets are from 15 to 

 19 in number, from 20 to 40 millimeters long, and lor 2 milli- 

 meters wide. The spikes are 13 centimeters long, 17 flowered, 

 with the bracts subequal to the calyx or much longer. In the 

 species they are much shorter. The calyx lobes are longer and 

 narrower and the flowers are blue. It is a strikingly different 

 form from anything I have seen in Nebraska and Wyoming 

 and deserves a varietal name. 



