390 TETRADYNAMIA SILIQUOSA 



3. B. Rapa, L. Radical leaves lyrate, hirsutely scabrous, not glau- 

 cous, loiver stem-leaves incised, upper ones entire, smooth. DC. 

 Prodr. l.p. 214. 



Sub-species A. deprkssa, DC. Root tumid below the neck, orbic- 

 ular, or depressed-globose, abruptly contracted to a slender tapering 

 radicle beneath, DC. 1. c. 

 Vulgo — Turnep. Common Turnep. 



Gallice — JWivet. Grosse Rave. Germ. — Die Ruebe. Hisp. — Naba. 

 Biennial. Wool fleshy, tchite {rarely yellow), depressed, orbicular, horizontal 

 diameter 3 toG inches, vertical diameter about 2 i?iches.^ Stem 2 to A feet high, 

 branched, smooth, or hirsute at busc. Radical leaves 6 to 10 or 12 inches long, and 

 2 or 3 to 5 inches tcide, scubrous, dap green, petiolatc, lyrate, the terminal lobe 

 rounded ; stem-leaves smaller, the upper ones lance-oblong, smooth, entire, sessile 

 auriculate and amplexicaul. Racemes loose, corymbost-jmniculate. Petals pale 

 greenish yellow. Siliques about an inch long. Seeds globose, small, reddish 

 brown. 

 Hab. Gardens, and fields : common. Fl. May. Fr. June— July. 



Obs. Generally cultivated for the table. The seeds are usually sown about the 

 last of July, and the roots are full grown in November. There are 7io native spe- 

 cies in the U. Slates. 



32*. SIN APIS. Tournef. D C. Syst. 2. /;. 607. 

 [An ancient name, of obscure derivation.] 



Calyx equal at base, spreading. Petals obovate. Filaments entire. 

 Silique subterete ; valves concave, or nerved, smooth, or hispid ; style 

 short and subulate, or ensiform. Seeds in a single series, subglobose ; 

 cotyledons incumbent, conduplicate. 



1. S. niora, L. Lower leaves lyrate, upper ones lanceolate ; siliques 

 somewhat 4-angled, smooth, appressed to the rachis. Beck, JJot.p. 33. 



Black Sinatis. Vulgo — Mustard. Black Mustard. 

 Gallice — Moutarde noir. Ger manic t — Der Senf. Jlisp. — Mostazo. 

 Root annual. Stc?n 3 to 6 feet high, terete, smooth, much branched. Leaves 

 petiolate, variously lobed, and toothed ; radical ones scabrous, cauline onei 

 smooth, the upper ones narrow, pendulous, serrate, or entire. Racemes slender. 

 3 to 6 or 8 inches long ; pedicels I fourth to 1 third of an inch long, erect. Stjtals 

 linear-oblong, yellowish. Petals greenish yellow, obovate, unguiculate. Anther* 

 sagittate. Siliques half an inch to 3 quarters in length, 4-angled, slightly torulose, 

 smooth, beaked with the slender 4-sided style. Seeds numerous, minute, globose, 

 dark brown. 



Ilab. Fields, fence-rows, and waste places : frequent. Fl. June— July. />. Aug 

 Obs. This is naturalized to a considerable extent, about old settlements ; and 

 is sometimes, though rarely, cultivated. The highly acrid seeds afford a valuable 

 rubefacient to the Physician,— and a stimulating condiment well known, and gen- 

 erally used, at table. 



2. S. alba, L. Leaves lyrate, smoothish ; siliques hispid, spreading, 

 scarcely as long as the ensiform beak. Beck, Bot p. 33. 



Waits Siiupis. Vulgo — White Mustard. 



