164 THE FLORA. 



** Plants growing ivild, or cultivated /or food. 



( flowers yellow 8 



1 Fruit a siliqne, 2-celled lengtLwise, ] ^^^^^^ ^,^^.^^^ ^^^^.^1^^ ^^_ 



, „ . .,-,^,111 .1 • ( flowers yellow,... 5 



1 Fruit a silicle, 2-celled lengthwise, < . *' , . , „ 



' = ' / flowers white, purple, &c. . 



I Fruit a jointed pod, with the partitions crosswise 11 



3 Silicle flattened or turgid, with a broad partition 4 



2 Silicle flattened contrary to the narrow partition. . . .3 



3 Silicle triang., seeds several in each cell. Shepherd' s-pune. Ca-Psel'la. 



3 Silicle roundish, with one seed in each cell. Pepper-grass. Lepip'ium. 4 



3 Silicle double, with one seed in each lobe. S. Swine Cress. Senebie'ua. 5 



4 Silicle flattened. Leaves cauline or radical. Whitlow-grass. Draba. 6 

 4 Silicle turgid. Loaves cauline. Horse Radish. Armora'cia 



4 Silicle turgid. Leaves all radical. r. Awlwort. Subula'ria. 



5 Silicle obovoid, i.e.., inversely egg-shaped, turgid. False Flax. Cameli'na. 



5 Sil. globose, turgid, membranous. Style long. Bladder-pod. Y ksicx' r\x. 



5 Silicle oblong, turgid, and somew'hat terete. Cress. Nastdr^'tium. 



6 Seeds arranged in two rows in each cell, not winged. Cress. Nastur^tium. 



6 Seeds in two rows in each cell, wing margin. Tower-mustard. Tur'ritis. 



6 Seeds arranged in a single row in each cell 7 



7 Sil. linear, flattish, each valve with 1 central vein. Rock Cress. Ar'abis. 7 



7 Silique lanceolate, flat, the valves veinless. Tooth-root. Denta'ria. S 



7 Siliqnes linear, veinless, terete. Flws. purple. False Rocket. Iodan^thus. 



7 Siliqnes linear, veinless, flat. Fls. whitish. Cuckoo -flovjer. Cardami'ne. 9 



8 Seeds ovate or oblong 9 



8 Seeds globose 10 



8 Seeds flat, with a broad, winged margin. S. Leavenworth'ia. 



9 Calyx 2-open. Lvs. runcinate, or finely dissect. Hedge-mustard. Sisym'brium. 



9 Calyx closed. Leaves lyrate-pinnatifid. Winter Cress. Barba''rea. 10 



9 Calyx closed. Leaves lanceolate. False Wall-Jlower. Erys^imum. 11 



10 Calyx spreading. Valves of the pod 1-3- veined. Mustard. Sina'pis. 12 



10 Calyx mostly erect. Valves of the pod 1-veined. Cabbage, d:c. Bras'sioa. 



II Pods short, 2-jointed, with 1 seed in each joint. Sea-rocket. Caki''le. 

 11 Pods with several transverse joints and cells. Radish. Raph^anus. 



1. IBE'EIS. Candy-tuft. 



The two outside petals larger than the two inside ones. Pods flattened, 

 truncate, emarginate, the cells one-seeded. — Foreign, ornamental plants. 



1 Flowers white. Plain about If. high 2-4 



1 I. umbella''ta. Purple C. Fls. purple, in umbels. Lvs. serrate, upper entiie. 

 2 I. ama'ra. Bitter C. Corymbs lengthening into racemes. Lvs. slightly toothed, 

 8 I. pinna'ta. Wing-leaved C. Corymbs scarcely lengthening. Leaves pinnatifid. 

 4 I. saxat'ilis. Rock C. Corymbs not lengthening. Shrubby. Lvs, linear, entire. 



