132 CRUCIFER^. CaUle. 



a line in diameter, tipped witli a slender persistent style. — Myagrum paniculatum, L. Spec. 

 ii. 641. — Winnipeg Valley, Bourgeau (1858), and more or less established along the track 

 of the Canadian Pacific Kailway, at Canmore, il7afo«?! (1885), also coll. on ballast, Jersey 

 City, Judge Brown ; fl. through the summer. (Adv. from Eu.) 



19. CAKILE, Touru. Sea Rocket. (Name of doubtful perhaps Arabic 

 origin.) — Fleshy maritime annuals, generically readily recognized by their char- 

 acteristic fruit. Flowers purplish or white. Leaves more or less sinuate-toothed 

 or incised. — Inst. Suppl. 49, t. 483 ; Gaertn. Fruct. ii. 287 ; Benth. & Hook. 

 Gen. i. 99. [By B. L. Robinson.] 



C. maritima, Scop. Leaves either narrow, linear or nearly so and subentire, or more 

 often very deeply sinuate piunatifid, with narrow rhachis and segments : upper cell of the 

 fruit considerably exceeding the lower, lanceolate in outline or ensiform, slightly 4-angled 

 and narrowed to an acutisli point ; the lower cell often but not always appendaged at the 

 summit with two spreading teeth. — Fl. Carn. ed. 2, no. 844; DC. Syst. ii. 428. — The 

 typical form of this species occurs as a ballast-weed upon the Atlantic Coast of the Middle 

 States, Brown, Parker, and a form unsatisfactorily separable by its usually more slender 

 and elongated spindle-shaped pods is indigenous in Florida, Indian Eiver, Palmer, Marquesas 

 Keys, Curtiss, Key West, Binney. This form, the var. ^quAlis, Chapm. Fl. 31, is not 

 exactly the C. cequalis, L'Her. of the West Indies, which has more entire apparently thinner 

 leaves and still more slender almost linear fruit. 



Var. Cubensis, Chapm. " Stem and branches erect ; leaves linear, obtuse, dentate- 

 serrate, tapering into a petiole; loment obovate." — Fl. ed. 2, 606. — "Keys of South 

 Florida." Not seen, but from the description of the fruit apparently different from C. 

 Americana, var. Cubensis, DC. 



Var. geniculata, Robinson, u. var. Foliage of the type : axes of the racemes very 

 stout and strongly geniculate : fruit fuUy inch in length ; both cells with several prominent 

 ribs ; the upper cell elongated, oblong, scarcely acute. — C. maritima, var. cequalis, Coulter, 

 Contrib. U. S. Nat. Herb. i. 31, & ii. 22, not Chapm. — Gulf Coast, Texas, Berlandier, no. 

 3103, Galveston, Lindheimer, May, 1843. 



C. Americana, Ndtt. Leaves oblanceolate or obovate, shallowly sinuate-toothed or cre- 

 nate : upper segments of fruit ovate in outline, 4-angled near the base, acuminately narrowed 

 to a compressed truncate often retuse tip. — Gen. ii. 62 ; Gray, Gen. 111. i. 170, t. 74 ; Greene, 

 Bot. Gaz. vii. 94; Wats. & Coulter in Gray, Man. ed. 6, 74; K. Brandegee, Zoe, ii. 340. 

 C. maritima, Fursh, Fl. ii. 434. C. edentula, Hook. Fl. Bor.-Am. i. 59. C. maritima, var. 

 Americana, Torr. & Gray, Fl. i. 119. Bum'as edentula, Bigel. Fl. Bost. 157. — Sea beaches 

 Gulf of St. Lawrence to Fla. ; on the Pacific in Central California (perhaps introduced), 

 Greene, and along the shores of the Great Lakes. Not always readily distinguishable from 

 the preceding species, of which it has sometimes been regarded as a variety. The difference 

 of foliage, however, is usually striking, and of geographic range noteworthy. A marked 

 form from Enterprise, Fla., Canby, has an elongated oblong strongly ribbed pod, but the 

 upper cell has the characteristic flattened and retuse apex of this species, with which the 

 foliage also closely agrees. 



20. RAPH ANUS, L. Radish. ('Pa^ai/o?, used for pa^wis, radish.) — 

 A genus of six to ten species, stout annuals or biennials, all natives of the Old 

 World and most of them of the Mediterranean region. — Gen. no. 539 ; DC. 

 Prodr. i. 228. [By B. L. Robinson.] 



R. RaphanIstrum, L. (Wild Radish, Jointed Charlock.) Leaves lyrately pinnatifid, 

 hirsute : petals most often light yellow or white and dark veined, rarely purplish : pod 

 strongly moniliform, 2-8-seeded ; the more or less ribbed or corrugated segments only H 

 to 2 lines in breadth ; beak elongated, slender, and gradually narrowed to a point. — 

 Spec. ii. 669; Torr. & Gray, Fl. i. 120; Torr. Bot. Mex. Bound. 35; Wats. & Coulter, 

 1. c. — A rapid growing and troublesome weed in waste and cultivated ground. (Introd. 

 from Eu.) 



