CRUCIFERAE 151 



10. STENOPHRAGMA Celak. 

 1. SteuophragmaThaliana(Iv.) Celak. Mouse-Ear or Thai<E-cress. 

 Wai,i,-crESS. (Man. p. 463 ; I. P./. 1770.) In sandy fields and rocky 

 places, Mass. and Out. to Minn., Ga. and Mo. — Pennsylvania : Monroe ; 

 Northampton ; Bucks ; Phii,adei,phia ; Chester ; Lancaster ; 

 Frankun ; Delaware ; Allegheny. 



11. BARBAREA R. Br. 



Capsules slender-pedicelled, obtusely 4-angled : leaf-segments 3-9. 



Capsules spreading or ascending. i. B. Barbarea. 



Capsules erect and appressed. i. B. striata. 



Capsules stout-pedicelled, acutely 4-angled : leaf-segments 9-17. 



3. B. praccox. 



1. Barbarea Barbarea (L.) MacM. YELLOW RocKET or Cress. 

 (Man. p. 451 ; I. F. /". 1709.) In fields and waste places, Lab. to Va. and 

 locally in the interior. Also on the Pacific coast. Nat. from Eu. — Penn- 

 sylvania : Northampton ; Bucks ; Monroe ; Chester ; Lancaster ; 

 Delaware ; Allegheny. 



2. Barbarea striata Andrz. ErECT-FruiTED WINTER CRESS. Man. 

 p. 451 ; I. F. f. 1710.) In fields and waste places, Quebec to the N. W. 

 Terr., Fla. and N. Mex. In Eu. and Asia. — Pennsylvania: MoNROS; 

 Northampton. 



3. Barbarea praecox (J. E. Smith) R. Br. Early Winter Cress. 

 (Man. p. 451 ; I. F.7^. 1711.) In waste places, N. Y. and Pa. aijd south- 

 ward. Adv. from Eu. — Pennsylvania : Northampton ; Bucks. 



12. ERYSIMUM L. 

 1. Erysimum chelranthoides L. Worm-seed Mustard. (Man. p. 

 465 ; I. F./. 178s.) Along streams and in fields, Newf. to N. J., west to 

 the Pacific coast. — Pennsylvania : Lancaster ; Dauphin ; Luzerne. 



13. CONRINGIA Link. 

 1. Conringla orientalis (L.) Dumort. Hare'S-Ear. Treacle Mus- 

 tard. (Man. p. 467; I. F. /. i7goa.) In waste places, Mich, to the 

 N. W. Terr., and on the Atlantic coast from N. B. to Vs..— Pennsylvania : 

 Northampton, Bethlehem. 



14. SINAPIS L. 

 1. Sinapis alba L. White Mustard. (Man. p. 449 ; I. P. /. 7700.) 

 In waste places and fields, mostly an escape. Adv. from Eu. Native 

 also of western Asia. — Pennsylvania: Northampton; Delaware. 



15. BRASSICA L. 



A. Upper leaf-blades merely sessile. 

 Pods erect or appressed, short-beaked, less than 2 cm. long : pedicels ap- 

 pressed. I. B- nigra. 

 Pods more or less spreading, long-beaked, over 2 cm. long: pedicels not 

 appressed. 



