I 894. I PLANTS OF MONROE COUNTS'. 47 



75. X. Akmokacia Fries. \Roripa Armoracia (L.) A. S. Hitchcock). Horse- 



radish. Wet places, ditches, waste places ; common. 



38. BARB A RE A R. Br. 



76. B. vulgaris R.Br. \B.Barbarea (L.) McM.] Common Winter Cress. 



Yellow Rocket. 



Wet grounds, ditches, roadsides ; common. 



77. B. prjECOX R.Br. \B.pracox (J. E. Smith) R.Br.] Early Winter 



Cress. Rare. Opposite the grove on Lake avenue, Rochester, L. 

 Holzer. Brockport, Prof. //'. //. Lennon. 



3Q. HESPERIS Tourn. [L.] 



78. H. matronalis L. Dame's Violet. 



Rare. Bank of Allen's creek, Penfield, Rev. f. Walton. 



40. ERYSIMUM Tourn. [L.] 



79. E. cheiranthoides L. Worm-seed Mustard. 



Dry or moist soil ; infrequent ; most abundant in dry sandy land. 

 Roadsides, north Goodman and Prince streets, Rochester. Sandy fields 

 near Irondequoit bay, Penfield. Gates, G. T. Fish. 



41. SISYMBRIUM Tourn. [L.] 



80. S. officinale Scop. [S. officinale, (L.) Scop.] Hedge Mustard. 



Waste places and roadsides ; very common. 



81. S. Thaliana Gaud. \Stenophragma Thaliana (L.) Celak.] Mouse-ear 



Cress. 



Dry sterile soil ; rare. Rochester, Dr. C. M. Booth. Wayne county. 



42. BRASS I CA Tourn. [L.] 



82. B. Sinapistrum Boiss. Yellow Mustard. English Charlock. 



Fields, roadsides, waste places ; common. 



— B. alba Boiss. [Sinapis alba L.] White Mustard. Escapes rarely. 



83. B. nigra Koch. [£. nigra (L.) Koch.] Black Mustard. 



Cultivated fields, waste places, along streams ; common. 



— B. campestris L. Ruta-baga. Occasionally spontaneous. 



— B. Rapa L. Turnip. Occasionally spontaneous. 



43. CAPSELLA Medic. [Bursa Weber.] 



84. C. Bursa-Pastoris Mcench. [Bursa Bursa-Pastoris (L.) Weber.) SHEP- 



HERD'S Purse. Everywhere abundant. 



44. THLASPI Tourn. [L.] 



i arvense L. Field Penny-cress. Mithridate Mustard. 

 Rare. Roadside, Bergen, Genesee county, G. T. Fish. 



45. LEPIDIUM Tourn. [L.] 



86. L. Virginicum L. Wild Pepper-GRASS. 



Roadsides and waste grounds ; common. 



87. L intermedium Gray. 



Equally common with the preceding, which it resembles closely. 



