SYNOPSIS OF GENERA. XXV 



Bartsia. Caps, of 2 cells. Seeds angular. Scrophidarinece, p. 202. 



Rhinantiius. Caps, of 2 cells. Seeds compressed, imbricated. Scro. 

 phularinece, p. 201. 



Melampyhum. Caps, of 2 cells. Seeds in pairs, tumid, smooth. 

 Melampyracece, p. 207- 



Euphrasia. Caps, of 2 cells. (Smfe striated. Anth. spinous. Scro- 

 phularinece, p. 202. 



* * Calyx 5-cleft. 



Scrophularia. Caps, of 2 cells. Cor. reversed; tube inflated; limb 

 rounded, much shorter. Scrophularinece, p. 205. 



Sibthorpia. Caps, of 2 cells, with transverse partitions. Cor. nearly 

 wheel-shaped. Stam. converging laterally in pairs. Scrophularinece, p. 204. 



Verbena. Cal. with 1 of the 5 teeth abrupt. Cor. nearly equal, 

 curved. Stam. in the tube. Verbenacece, p. 208. 



Digitalis. Caps, of 2 cells. Cor. bell-shaped, tumid underneath. 

 Stam. bent. Scrophularinece, p. 204. 



Linaria. Cal. 5-parted. Cor. personate, spurred at the base, the mouth 

 closed by a projecting palate. Caps, ventricose, 2-celled, opening by valves 

 or teeth. Scrophularinece, p. 203. 



Antirrhinum. Caps, of 2 cells, bursting unequally at the summit. 

 Cor. closed with a palate, prominent or spurred at the base behind. Scrophu- 

 larinece, p. 204. 



Pedicularis. Caps, of 2 cells. Seeds pointed. Cor. ringent ; upper 

 lip compressed. Scrophularinece, p. 201. 



* * * Calyx of 2 leaves. 



Orobanche. Calyx leaves lateral. A gland under the germen. Caps. 

 of 1 cell, with 4 receptacles. Orobancheee, p. 206. 



Class XV. Tetradynamia. Stamens 6, 2 o])posite ones 

 shortest. (Nat. Ord. Crucifer^e, Juss.) 



Order I. Siliculosa. Fruit a short roundish pod, or pouch. 

 * Cotyledons accumbent. 



Draba. Pouch entire, laterally compressed ; valves nearly flat. Seeds 

 numerous, p. 20. 



Crambe. Pouch globose, stalked, coriaceous, of 1 cell, without valves, 

 deciduous. Seed solitary, p. 29. 



Cakile. Pouch angular, of 2 joints, each of 1 cell, without valves ; the 

 uppermost deciduous. Seeds solitary, p. 22. 



Cochlearia. Pouch nearly entire, turgid, rugged, of 2 valves. Seeds 

 numerous, p. 21. 



Thlaspi. Pouch laterally compressed, emarginate ; valves winged at the 

 back, many-seeded. Cotyledons accumbent. p. 22. 



Capsella. Pouch laterally compressed, obcordato-cuneate ; the valves 

 sharply keeled, without wings, many-seeded. Cotyledons incumbent, p. 26. 



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