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CLASS XV. TETRADYNAMIA. 

 ORDER 1. SIL1CULOSA. 



A. Silicle not notched at the end. 



1258. Draba. Silicle with flattiih valves parallel with the 



partition. 

 1268. Lunaria. Silicle pedicelled, with flat valves parallel 



with the partition, crowned with theftyle. 

 1257. Subularia. Silicle with ovate concave valves, contrary 



to the partition. 

 1255. Vella. Silicle with the partition as long again as 



the valves. 



1249. Myagrum. Silicle inverfely heart- fh aped, with concave 



valves; the cells commonly i-fe.ded. 

 1254. Isatis. Silicle i-feedcd, with the valves carinate. 



1252. Cakile. Silicle fomewhat 4-fided, with 2 of the an- 



gles carinate, without valves ; the cells 

 i-feeded. 

 1251. Pug ionium. Silicle tranfverfal, beaked at each end, with- 

 out valves, i-feeded. 



1250. Bunias. Silicic 4-fided, without valves, 2 or 4-celled, 



wrinkled. 



1253. Crambe. Silicle globular, i-celled, i-feeded, with- I 



out valves. 



B. Silicle notched at the end. 



1263. Iberis. Two of the petals larger. 



1264. Alyssum. Silicle margined, with concave valves paral- 



lel with the partition. 



1265. Clypeola. Silicle orbicular, deciduous, with flat valves. 



1266. Peltaria. Silicle orbicular, comprefTed and flattiih, 



not opening. 



1261. Cochlearia. Silicle turgid, wrinkled, 2-valved, many- 



fee ded. 



1262. Coronopus. Silicle comprelfed, wrinkled, without valves, | 



2-feeded. 



1259. Lepidium. ' Silicle with the valves carinate, but not 



margined. 



1260. Thaspi. Silicle inverfely heart-fhaped, with the valves 



carinate and margined. 



1 



