326. Sepals 2-4. Petals 3-4. 327 Sepals 5. Petals 2-5. 332 327. Leaves marked with glandular dots, at least at the edges. Stipules wanting. 328 Leaves without glandular dots. 329 328. Leaves simple, undivided. Flowers hermaphrodite. Disc cushion-shaped. Stigmas 3. Fruit separating into 3 drupe-like, 2-celled mericarps. Seeds with curved embryo. _Chamaelea_, =114. Cneoraceae=. Leaves compound, more rarely simple, but then fruit not drupe-like. =115. Rutaceae.= 329. Leaves stipulate. Ovules usually erect. Corolla imbricate in bud. Shrubs or trees. 330 Leaves exstipulate. Ovules usually pendulous. Ovary 2-celled or transversally septate. Flowers hermaphrodite. 331 330. Disc present. =129. Celastraceae.= Disc wanting. Flowers unisexual. Ovary 2-celled. _Azima_, =131. Salvadoraceae=. 331. Leaves opposite. Petals valvate in bud. Receptacle without glands. Shrubs or trees. =197. Oleaceae.= Leaves alternate. Petals imbricate in bud. Receptacle provided with glands. Herbs or undershrubs, rarely shrubs. =88. Cruciferae.= 332. (326.) Anthers opening outwards. Stamens 3. Disc present. Ovary 3-celled. Seeds exalbuminous. =130. Hippocrateaceae.= Anthers opening inwards. Disc reduced to separate glands or wholly wanting. Ovary 5-celled. Stigmas 5. Seeds albuminous. =107. Geraniaceae.= 333. (325.) Filaments united, at least at the base. 334 Filaments free. 336 334. Filaments united nearly to the apex. Petals with valvate aestivation. Stigma 1. 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 1. 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. 337 337. Calyx with valvate aestivation. _Triumfetta_, =141. Tiliaceae=. Calyx with imbricate or open aestivation. 338 338. Calyx large. Ovules pendulous. Seeds exalbuminous. Leaves alternate. _Dichapetalum_, =121. Dichapetalaceae=. Calyx small. Ovules erect, more rarely pendulous, but then leaves 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 transversally septate. Herbs or undershrubs, rarely shrubs. 342 341. Ovary 2-celled. Leaves opposite, lobed. _Acer_, =133. Aceraceae=. Ovary 3-celled. Leaves alternate, pinnate. =134. Sapindaceae.=