CRUCIFERAB 19 



OFFICINAL SISYMBRIUM. Hedge Mustard. 



Stem 2 to 4 feet high, with spreading branches. Leaves 3 to 6 or 8 inches long. 

 Raceme* elongating, finally 6 to 12 or 15 inches in length. Flowers greenish-yel- 

 low, small. 



Hob. Lanes, roadsides, and waste places. Nat of Europe. Fl. May. Fr. Aug. 

 Obs,. A worthless introduced weed, now extensively naturalized. 



2. S. Thalianum, Gaud. Leaves obovate or oblong, entire or 

 obscurely dentate ; siliques linear, somewhat 4-sided. 



THALIAN SISYMBRIUM. Mouse-ear Cresa. 



Biennial f Stem 3 or 4 to 12 inches high, often several from the same root, with 

 plunder axillary branches. Radical leaves rosulate, 1 to 2 inches long. Racemes 1 

 to 3 or 4 inches long. Flowers white, inconspicuous. 

 Hab. Old fields. Nat. of Europe. Fl. ApriL Fr. June. 



3. S. canecens, Nutt. Hoary-pubescent or glaucous; leaves 

 bipiunatifid; siliques oblong or clavate, in long racemes, shorter 

 than the pedicels. 



HOARY SISYMBRIUM. 



Stem 1 to 2 feet high, with a few coarse branches. Leaves 1 to 3 or 4 inches long, 

 finely dissected, sparingly pilose. Racemes slender, 4 to 12 or 15 inches long. 

 Flowers ochroleucous. 

 Hab. Banks of the Schuylkill : rare, Fl. May. Fr. June. 



TRIBE 3. BRASSICE V AE. 



Silique elongated, the style often with a seed-bearing cell at base; seeds globose, in 

 a single series; cotyledons incumbent and conduplicate (^,)- i. e. folded round the 

 radicle. 



34. HR AS SIC 4, L. 



[Formed from Uresic, the Celtic name for the Cabbage.] 

 Silique subterete ; valves 1 -nerved; style short, obtuse. 

 1. B. OLERACEA L. Leaves orbicular or oblong, repand or lobed, 

 strongly veined, fleshy, glabrous and glaucous. 

 OLERACEOUS or POT-HERB BRASSICA. Cabbage. 



Biennial. Stem 9 to 18 inches high, clavate, simple, with long flowering branches 

 the second year. Leaves large, those at the summit of the stem densely imbrica- 

 ted in a head. Racemes long, loose. Flowers greenish-yellow. 

 Hab. Gardens. Nat. of Europe. Fl. May. Fr. July. 



jg^ The following Sub-species, or Varieties, are more or less cul- 

 tivated in our kitchen gardens: 



f Racemes paniculate. 



Sub-species 1. ACE>HALA, DC. Stem elongated ; leaves not forming 

 a head. Tree Cabbage. 



2. BULLATA, DC. Young leaves subcapitate, finally expanding, bul- 

 late or crisped. Savoy Cabbage. 



3. CAPITATA, DC. Leaves densely imbricated in a head before 

 flowering. York Cabbage. 



4. CAULO-RAPA, DC. Stem bulbous at the origin of the leaves. 

 Bulb-stalked Cabbage. Kohl Rabi. 



ft Racemes corymbose. 



5. BOTRYT'IS, DC. Leaves oblong, connivent; peduncles coalesced 

 before flowering. 



