Lake Maxinkuckee, Physical and Biological Survey 319 



ens, and the late fruits are often attacked by a fungus which causes 

 them to blast and turn black. The plants furnish a good deal of 

 bird food during early winter, and one can frequently notice in 

 early snows numerous bird-tracks among these plants, and note 

 where the birds have been pecking. The late autumn seedlings 

 survive the winter in the form of small rosette plants, ready to 

 push up a flowerstalk with the advent of spring. 



370. HEDGE WEED OR MUSTARD 



ERYSIMUM OFFICINALE (L.) Scop. 



Common in open waste places. Noted in flower on the east side 

 May 28, 1901, and in blossom in Chadwick's yard September 13, 

 1907. It blooms until killed by frost ; many of the later blooming 

 plants are seedlings which have sprung up during the late sum- 

 mer. There was a good patch near the Bardsley cottage. 



371. TALL HEDGE MUSTARD 



NORTA ALTISSIMA (L.) Britton 



Apparently of recent introduction. A number of plants found 

 in a single patch along the railroad by the icehouses. The plants 

 had been in flower for some time by June 11, and by this time the 

 pods were well developed. 



372. HAIRY ROCK-CRESS 



ARABIS HIRSUTA (L.) Scop. 



Rather common in dry 'ground north and northwest of the lake. 

 Collected in flower and with the pods somewhat grown May 27, 

 1901. 



373. SMOOTH ROCK-CRESS 



ARABIS LAEVIGATA (Muhl.) Poir. 



Rather common on the steep rocky bluffs, along the eastern 

 shore of the lake. In flower May 24 and later. Specimens were 

 collected May 27, 1901. 



374. SICKLE-POD 



ARABIS CANADENSIS L. 



Rather common in dry gravelly shaded places on both sides of 

 the lake; noted at Long Point, by Lakeview Hotel, and along the 

 east side on the high banks. The curved pods resembling the 

 blade of a scythe in shape or the semi-transparent partitions left 

 after the valves have fallen, form rather conspicuous objects dur- 

 ing the winter months. Noted in flower early in June. 



