Ix GENERA. 



valve. Lobes of Stigma spreading. Seeds in a single row. Two Sep. somewhat gibbous at 

 base. M. yellowish, p. 38. 



B. Stigma discoid or capitate. 



89. BAE.BABEA. Pod round and keeled, or somewhat 4-edged. Seeds in one row. L. 

 more or less lyrate. Fl. yellow, p. 29. 



90. UAST U KTIUM. Pod round (on the section). Seeds irregularly in two rows. L. 

 pinnate. Fl. white or yellow. In some species the pod is so short that but for their general 

 resemblance to the rest of the genus they would be placed among the Siliculosse. p. 29. 



91. TUERITIS. Pod compressed, ieeled. Seeds in 2 rows. An upright plant, with 

 cordato-sagittate L. p. 30. 



92. ARABIS. Pod compressed, keeled or with numerous longitudinal veins. Seeds in 

 one row. Boot-L. in rosettes. Fl. white, pinh, or blue. p. 30. 



93. CARDAMINE. Pod compressed, without keel or nerves, at last rolling upwards from 

 the bottom. Seed-stalk filiform. Fl. white, pinh, or purple, p. 32. 



94. DENTABIA. Pod as in Cardamine. Seed-stalks dilated, winged. Placentas not 

 winged. Root horizontal. Stem erect. L. jjhmate or digitate, p. 32. 



95. PTEKONEUEUM. Pod as in Cardamine. Seed-stalks dilated, winged. (Placentas 

 alato-nervose, DC.) Habit of Cardamine. p. 33. 



XVI. MONADELPHIA. 



I. PENTANDRIA. Geeaniaceji:. 



142. ERODIITM. Style 1. Arils 5, 'each with a single seed. Awns spiral, bearded on the 

 inside {in E. albiflorum sometimes smooth.) Five barren Fil. Stem L. opposite. Cor. pinh or 

 white, p. 68. 



II. DECANDRIA. Geeaniace^. 



143. GEBAWIUM. Arils 5, 1-seeded. Awns spii'al, not bearded. Sep. 5. Pet. 5, 

 blue, pink, or white. L. opposite, p. 69. 



III. POLYANDRIA. Malvace^. 



A. Calyx double. 



i. Seeds in a single capsule. 



135. HIBISCUS. Caps, of 5 cells. Stigmas 5. Seeds many. Outer Cal. of many L. 

 p. 64. 



ii. Seeds irregularly crowded into a head. 



131. MAIiOPE, Outer Cal. of 3 L. p. 62. 



iii. Seeds, or 1-seeded Caps., whorled. 



132. MALVA. Outer Cal of 3 L. p. 62. 



133. ALTH^A. Outer Cal. in 6-9 segments, p. 63. 



134. LAVATERA. Outer Cal. 3-lobed. p. 64. 

 There is no diiference of habit in these three genera. 



B. Calyx simple. 



136. SIDA. Style multifid. Caps, about 15, whorled, each containing 1-3 seeds, and 

 terminating in two horns, p. 65. 



