IKK FLORA OF SCOTT AND MUSCATINE COl Ni 205 



Sisymbrium, Tourn. Hedge Mustard. 



61. -V. canescens, Nutt. Tansy Mustard. 

 Railroad tracks, Buffalo and Kairport. 



62. S. Sophia, L. 



Railroad tracks and waste places in West Davenport and Mine 

 ( 1 rass. 

 63 S. officinale, Scop. Hedge Mustard. 

 Waste places ; common. 



64. S. altissimum, 1.. rumble Mustard. 



Railroad track, Blue Grass, May, 1895 (single plant). Waste 

 ground near B., C. R. & X. tracks in West Davenport (in 

 quantity). Rock Island, 1896, (with Salsola Kali, L., var. 

 Tragus, DC.) Eldridge, 1897. Becoming frequent. 



Thelypodium, Endl. 



65. 7'. pennatifidum, Wa'son. 



Alluvial soil along the Mississippi and Cedar Rivers; not 

 common. 

 Brassica, Tourn. 



66. B. Sinapistrum, Boiss. English Charlock. 

 Railroad tracks ; frequent. 



67. B. nigra, Koch. Black Mustard. 

 Waste places ; common. 



68. B. campestris, L. 

 Railroad tracks : infrequent. 



Capsella. Medic. 



69. C. Bursa-pastoris, Moench. Shepheid's Purse. 

 Waste places ; very common. 



Thlaspi, Tourn. 



70. T. arvense, L. 

 River front, Muscatine. 



Lepidium, Tourn. Peppergrass. 



71. L. Virginicum, L. 

 Frequent. 



72. L. intermedium, Gray. 

 Common. 



Raphanus, Tourn. 



73. R. sativus, L. 



Found with the several species of Brassica on railroad tracks 

 but not persisting for more than a year or two. 



