PLANTS OF FARGO, ETC. 81 
Pyrolaceae. Wintergreen Family. 
Pyrola elliptica Nutt. SHIN LEAF. 
Frequent in aspen woods on Minnesota side. June 25. 
Monotropaceae. Indian-pipe Family. 
Monotropa uniflora 1. ; INDIAN-PIPE. 
Occasional in aspen woods on Minnesota side. 
Primulaceae. Primrose Family. 
Androsace occidentalis Pursh. 
Fields and prairie. Frequent. Apr. 30 (29); excluding Apr. 9, 
IgIo. = 
Steirenema ciliatum (1,.) Raf. ~ FRINGED LOOSESTRIFE. 
Woods. Common. June 30. 
Polamisia trachysperma T. & G. CLAMMY WEED. 
A large colony in some gravel along N. P. Ry. west of town in 
1910, but has nearly disappeared. July 20. 
Brassicacee Mustard Family. 
Lepidium densiflorum Schrad. PEPPER GRASS 
Fields and roadsides. Common. May 30 (28). Records range 
from May 13 to June 13. 
Lepidium virginicum \,. 
Yards, occasionally introduced but not persisting. 
Thlaspi arvense VL. FRENCHWeEeD. PENNY CRe€SS. 
Fields and roadsides. Common. Apr. 20 (22); earliest, March 
22, 1910. Many seedlings pass the winter in various stages, often 
after beginning to flower. So far as I have noticed, the flowers which 
are just opened when winter begins do not develop in the spring, 
but well developed flower buds open with the first warm weather. 
Bursa bursa-pastoris (1,.) Britton. SHEPHERD'S PURSE. 
Fields and roadsides. Frequent. Apr. 10 (9). 
Camelina sativa Crantz. FALSE FLAX. 
Roadsides. Occasional. 
Camelina dentata Pers. ROUND-SEEDED FALSE FLAX 
Roadsides. Occasional. 
Neslia paniculata (I,.) Desv. , BALL MUSTARD. 
Roadsides. Occasional. 
Radicula palustris (1,.) Moench. MARSH YELLOW CRESS. 
Low places in fields, river-banks, etc. Common. June 20 (19). 
