Tite Flora of the Cayuga Lake Basin 229 



la. S. officinale (L.) Scop., var. leiocarpum DC. 



In situations similar to the preceding; common. June-Sept. 

 Widely distributed in N. A. and S. A. Naturalized from Eurasia. 



2. S. altissimum L. Tumble Mustard. 



A weed in gravelly waste places by roadsides, and more rarely in cultivated fields ; 

 frequent. June-Sept. 



Widely spread throughout the basin, but especially frequent in railroad yards and 

 on railroad ballast. 



N. S. to Ont. and B. C, southw. to Va., Mo., Colo., Utah, and Oreg. Especially 

 abundant in the Northwest. Adventive from Eu. 



3. S. brachycarpon (Richardson) Wats. (See Rhodora 17:140. 1915. 6". canescens 



of Cayuga Fl.) 



Cliffs, probably only in calcareous soils ; very rare. June. 



"Lucifer Falls, Tompkins Co. /. W . Chickering" (Gray's Man., ed. 5. 1867). 

 Dudley says : "I have not been able to find it there, but it grows above the footpath 

 at the entrance of Watkins Glen, {Dr. Jordan discoverer.) !". The species has not 

 been seen in recent years, though it has been sought diligently. It is known elsewhere 

 in N. Y. only in the vicinity of Lake Champlain. 



Que. to Wash., southw. to Tenn., 111., Mo., Tex., "and Colo. 



4. S. Thalianum (L.) J. Gay. Mouse-ear Cress. 



A weed in sandy or gravelly waste places, and by roadsides, in acid soils; rare. 

 Apr. 20-May. 



Roadside, lower part of state road ascending the hill n. of Enfield Glen, 1913— 

 1920 {A. J. E. & L. H. MacDaniels) ; near Phillips Pond (K. M. W ., A. J. E., & 

 L. F. Randolph) ; near Black Brook, Tyre (same collectors). 



Mass. and Ont. to Minn., southw. to Ga., Mo., Ark., and Utah. Naturalized from 

 Eurasia. 



12. Hesperis (Tourn.) L. 

 1. H. matronalis L. Rocket. 



Damp shady stream borders in ravines, and on damp or shady roadsides; occasional. 

 June-July. 



Escaped from cultivation : Enfield Glen ; road to Buttermilk Falls, 1875 and 

 1882 (D.) ; near Giles Place (D.) ; Cascadilla Creek; Fall Creek, at lower bridge 

 in Forest Home and below ; Ovid ; and elsewhere. 



Me. to Iowa, southw. to N. C. Native of Europe. 



13. Erysimum (Tourn.) L. 



a. Pods about 2 cm. long, on slender pedicels about 10 mm. long ; leaves scarcely 

 toothed. 1. E. cheiranthoides 



a. Pods 4—10 cm. long, on stout pedicels about 5 mm. long; leaves repand-dentate. 



2. E. repandum 

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



Dry or sometimes moist shores and banks and on shale ledges, probably in more or 

 less calcareous soils ; frequent. June-Sept. 



Enfield Glen; Six Mile Creek; near the Old Armory (D.) ; Fall Creek; near the 

 "Nook"; below University Ave.; in cinders, railroad ballast e. of Freeville; e. and 

 w. shores of Cayuga Lake (D. !) ; near pond s. of South Butler; and elsewhere. 



Newf. to the Pacific coast, southw. to N. J., Pa., Tenn., and Mo.; apparently infre- 

 quent on the Atlantic Coastal Plain. Found also in Eu. 



