152 CRUCIFERAE 



Stem glabrous, more or less glaucous : pedicels over 6 mm. long at matu- 

 rity. 2. B.jiincea. 

 Stem hispid : pedicels less than 5 mm. long at maturity. 3. B. arvensis. 

 B. Upper leaf-blades clasping. 4. B. campestris. 



1. Brasaica nigra (L. ) Koch. Black Mustard. (Man. p. 449 ; I. F. 

 /. ijoi. ) In fields and waste places throughout northeastern U. S. Nat. 



from Eu. Native also of Central Asia. — Pentisylvania : Northampton ; 

 Bucks ; Philadelphia ; Delaware; Chester; Lancaster ; Frank- 

 lin ; Huntingdon ; Allegheny. 



2. Brassica juncea (L.) Cosson. Indian Mustard. (Man. p. 449; 

 I. F.y. //02. ) In waste places, N. H. to Mich., Pa. and Va. Adv. and 

 nat. from Asia. — Peujisylvania : Northampton; Tioga. 



3. Brassica arvensis (L.) B.S.P. Wild Mustard. Charlock. 

 (Man. p. 450 ; I. F. f. i/Oj.) In fields and waste places. Adv. from Eu. 

 and widely distributed. — Pennsylvajiia : Northampton ; Lancaster. 



4. Brassica campestris L.* Turnip. (Man. p. 450; I. F. /. 1704.) 

 In cult, grounds, fugitive from Eu. — Pennsylvania : Northampton ; 

 Allegheny. 



16. RAPHANUS L. 



Corolla yellow : pods 4-10-seeded, the valves longitudinally grooved. 



1. R. Raphanislrum. 

 Corolla white or pink : pods 2-3-seeded, the valves not longitudinally grooved. 



2. R. sativus. 



1. Raphanus Raphanistrum L. Wild Radish. (Man. p. 450 ; I. 

 F. f. 1707.) In fields and waste places, N. B. and Out. to Pa., also in 

 B. C. Nat. from Eu. — Pennsylvania: Northampton ; Philadelphia; 

 Delaware ; Chester. 



2. Raphanus sativus L. Garden Radish. (Man. p. 451; I. F./. 

 1708.) Cult, and occasionally spontaneous. Native of Asia. — Pennsyl- 

 vania: Northampton; Franklin; Centre; Allegheny. 



17. RAPISTRUM Desv. 

 1. Rapistrum rugosum (L.) All. (Man. p. 460. ) In waste places and 

 on ballast, about seaports and rare inland. Introduced from Eu. — Penn- 

 sylvania : Northampton, on old road College Hill ; also on ballast. 



18. CAKILB Gaertn. 

 i. Cakile edentula (Bigel.) Hook. American Sea Rocket. (Man. 

 p. 448 ; I. F. /. i6gg.) In sands of the seashore, Newf. to Fla. and along 

 the Great Lakes to Minn. — Pennsylvania : Erie, Presque Isle. 



19. NESLIA Desv. 

 1. Neslia paniculata (L.) Desv. Neslia. (Man. p. 459 ; I. F. /. 

 775./. ) In waste places, Ont. to B. C and in ballast about eastern sea- 

 ports. Adv. or fugitive from Eu. — Pennsylvania : Philadelphia, on 

 ballast. 



* Brassica oleracea L. (Cabbage) has been found as an escape in 

 Northampton County. 



