266. (248.) Leaves opposite, rarely whorled, undivided. Land-plants. 267 Leaves alternate or all radical, rarely (_Droseraceae_) whorled, but then water-plants with 5 stamens and 5 styles. 268 267. Sepals united below, valvate in bud. Stamens 4-6. Style 2-3-cleft. Seeds with abundant albumen. =152. Frankeniaceae.= Sepals free, imbricate in bud. Stamens 9 or more. Seeds without albumen. _Hypericum_, =149. Guttiferae=. 268. Herbs with glandular hairs or with whorled leaves. Sepals, petals, and stamens equal in number, 4, 5, or 8. Anthers more or less turned outwards. =92. Droseraceae.= Herbs or undershrubs without glandular hairs or woody plants; if herbs, then anthers turned inwards, at least when young. Leaves alternate or all radical. 269 269. Flowers irregular. Ovary open at the apex. Stigmas sessile. Seeds exalbuminous; embryo curved. =89. Resedaceae.= Flowers regular. Ovary closed. 270 270. Corolla with contorted aestivation, more or less perigynous. Calyx deciduous, callous or glandular within. Sepals, petals, and stamens 5. Anthers turned inwards. Styles 3. =160. Turneraceae.= Corolla with imbricate, not contorted, or with valvate aestivation, very rarely with contorted aestivation, but then stamens numerous. 271 271. Seeds exalbuminous, rarely albuminous, and then placentas finally separating from the wall of the ovary. Anthers usually turned outwards. Leaves exstipulate. =153. Tamaricaceae.= Seeds albuminous. Placentas not separating from the wall of the ovary. Anthers turned inwards, rarely outwards, but then, as usually, leaves stipulate. 272 272. Stem erect, rarely climbing, and then stamens numerous or anthers turned outwards. Corona, if present, simple or double. Ovary sessile or nearly so. Shrubs or trees. Leaves simple, undivided. =159. Flacourtiaceae.= Stem climbing, usually tendril-bearing, rarely erect, but then corona 3-or more-fold or ovary distinctly stalked. Stamens 4-10. Anthers turned inwards. Sepals 4-6, more or less united, imbricate in bud. Petals as many as sepals. =161. Passifloraceae.= 273. (190.) Ovules solitary in each ovary-cell. 274 Ovules 2 or more in each ovary-cell. 319 274. Ovules erect or ascending. 275 Ovules pendulous, descending, or horizontal. 288 275. Disc outside the stamens, sometimes one-sided or broken up into several glands. Leaves alternate, compound, rarely simple and then stamens 8-10. 276 Disc or separate glands within or between the stamens or wanting, rarely outside the stamens, but then leaves simple and stamens 4-6. 277 276. Flowers hermaphrodite. Petals 5. Stamens 4-5. Ovary 4-celled. Seeds with abundant albumen; embryo straight. _Bersama_, =135. Melianthaceae=. Flowers unisexual or polygamous. Seeds without albumen; embryo more or less curved. =134. Sapindaceae.= 277. Petals and stamens hypogynous. 278 Petals and stamens more or less perigynous. Leaves simple, stipulate. Shrubs or trees. 285