CHORIPETALAE 3 1 



333- (3-5-) Filaments united, at least at the base 334 



Filaments free 336 



334. Filaments united nearly to the apex. Petals with valvate aestivation. 



Stigma I. Leaves pinnate, exstipulate. 



Quivisianthe, 118. Meliaceae. 



Filaments united only at the base. Petals with imbricate or contorted 



aestivation. Leaves stipulate 335 



335. Petals with contorted aestivation. Stigma i. Seeds with an aril. 



Shrubs. Leaves undivided. . . Phyllocosmus , 110. Linaceae. 



Petals with imbricate aestivation. Stigmas 5. Seeds without an aril. 



107. Geraniaceae. 



336. Leaves gland-dotted, exstipulate, but sometimes with axillary spines. 



115. Rutaceae. 

 Leaves not dotted, simple, stipulate ^^^y 



337. Calyx with valvate aestivation. . . . Triumfetta, 141. Tiliaceae. 

 Calyx with imbricate or open aestivation 338 



338. Calyx large. Ovules pendulous. Seeds exalbuminous. Leaves alternate. 



Dicha petal urn, 121. DichapetalaceaCi 



Calyx small. Ovules erect, more rarely pendulous, but then leav^es 



opposite, at least those of the flowering branches. 129. Celastraceae. 



339. (321.) Stamens fewer than twice as many as the petals, 5 — 8. . . 340 

 Stamens twice as many as the petals, or more 343 



340. Flowers unisexual or polygamous. Disc outside the stamens. Stamens 



8, rarely 5 — 6 ; in the latter case ovary 3-celled. Ovules ascending, 



at least one of them, or horizontal. Shrubs or trees 341 



Flowers hermaphrodite. Stamens 5 — 7. Ovary 2- or 5-celled or trans- 

 versally septate. Herbs or imdershrubs, rarely shrubs. . . . 342 



341. Ovary 2-celled. Leaves opposite, lobed. Acer, 133. Aceraceae. 

 Ovary 3-celled. Leaves alternate, pinnate. . . . 134. Sapindaceae. 



342. Sepals 4. Petals 4. Stamens 6. Ovary 2-celled or transversally septate. 



Stigmas i — 2. Leaves exstipulate 88. Cruciferae. 



Sepals 5. Ovary 5-celled. Stigmas 5. Leaves stipulate. 



107. Geraniaceae. 



343. (339.) Stamens twice as many as the petals 344 



Stamens more than twice as many as the petals 359 



344. Filaments free 345 



Filaments evidently united, at least at the base 354 



345. Calyx with valvate aestivation 34^ 



Calyx with imbricate aestivation 349 



346. Leaves gland-dotted, without stipules, but sometimes with axillary spines. 



115. Rutaceae. 

 Leaves not gland-dotted, usually with stipules 347 



