CRUCIFERjE. 



47 raphanus. 



numerous, yellow. Pods very numerous, 2 inches in length. Seeds well known 

 as a condiment. June, July. Ann. Black Mustard. 



2. S. arve'nsis. 



Silique smooth, many-angled, torose, about 3 times the length of the slen- 

 der ancipital style ; 5/c«j and ier/t^es hairy. In N. York, introduced. Lower 

 leaves large sublyrate-pinnatifid, upper ones oblong-ovate, ail repand toothed. 

 Silinue smnewhat spreading, 1^ inches long. Seeds large and black. Jn. 

 —Aug. Ann. Charlock. 



3. S. ALBA. 



Silique bristly, torose, shorter than the 2-edged beak; leaves pinnatifid, up- 

 per ones sublyrate, all irregularly dentate ; seeds large, pale yellow. Native 

 of Europe. The seeds are iiscd for the same purposes as the S. nigra. Both 

 are much esteemed for various medicinal pui poses. White Mustard. 



24. BRA'SSICA. 



Silique roundish; st3le small, short, obtuse; seeds in one 

 row; calyx closed; seeds globose ; cotyledons conduplicate. 



From the Celtic hrcsic, a cabbage. 



1. B. olera'cia. 



Leaves with a glaucous dust, somewhat fleshy, repand or lobed, even in their 

 youngest state, and quite smooth. The original plant grows native in Eng- 

 land "on rocky shores and cliffs, with no appearance of a head, forming a sur- 

 prising contrast with the cultivated varieties. The excellence of the Cabbage 

 as a pot-herb needs no encomium. Common Cabbage. 



2. B. campe'stris. 



Leaves fleshy, with glaucous bloom, the lower when young, somewhat his- 

 ped or ciliate, lyrate dentate, the upper cordate, amplexicaul, acuminate. Root 

 between fusiform and napiform. Native of Sweden. It is cultivated like 

 the common turnip, but, after a thorough experiment, is considered by farmers 

 inferior in value to that root, although it grows to an enormous size. Flow- 

 ers yellow. June. Bien. Rutabaga. 



3. B. RAPA. 



Radical leaves lyrate, without a glaucous bloom, rough; caidine leaves cnt; 

 upper ones entire. Root napiform depressed. Bien. Turnip. 



4. B. NAPUS. 



Leaves smooth, upper ones cordate-lanceolate, amplexicaul; lower ones 

 lyrate-toothed. This species is said by Nuttall to grow native on ledges of 

 rocks in Arkansas. Flowers yellow. May. Bien. Rape. 



25. RA'PHANUS. 



Calyx closed, setose ; silique torose, terete, not opening 

 by valves, 1 or 2 celled ; glands between the short stamens 

 and pistil, and between the long stamens and calyx ; cotyle- 

 dons conduplicate. 



Gr. Qcij quickly, and (^uivu), to appear; on account of the rapidity of its 

 growth. 



