34 CHORIPETALAH 



Styles 2, 3, or 5, free or united at the base, usually 2-cleft. Flowers 

 unisexual. Fruit usually a capsule. . . . 122. Euphorbiaceae. 



376. Leaves with glandular dots. Petals 4—5. Stamens as many or twice 



as many. 115. Rutaceae. 



Leaves without glandular dots, lobed, opposite. Petals 5. Stamens 8, 

 inserted at the inner edge of the disc. Ovary-cells and style-branches 2. 



Acer, 133. Aoeraceae. 



377. Flowers unisexual. Stamens as many as and alternate with the petals. 



Leaves alternate, undivided, stipulate. . . 122. Euphorbiaceae. 

 Flowers hermaphrodite, rarely polygamous 378 



378. Sepals valvate in bud, united below. Leaves alternate, stipulate. 



144. Sterculiaceae. 

 Sepals imbricate in bud 37g 



379. Petals with a callosity or scale on the inside. Ovary-cells and styles or 



style-branches 3 — 4. Stamens 10. Flowers solitary or in fascicles. 

 Leaves undivided, stipulate. Shrubs or trees. 112. Erythroxylaceae, 

 Petals without an appendage on the inside. Ovary-cells and styles or 

 style-branches 5, more rarely 3 — 4, but then stamens 4 — 5 or flowers 

 in racemes or panicles 380 



380. Ovary lobed, 5-celled. Styles 5. Stamens 10. Fruit a capsule. Herbs 



or undershrubs, rarely shrubs. Leaves alternate, usually compound. 



108. Oxalidaceae. 



Ovary entire. Stamens 4 — 5 or 10 ; in the latter case styles 3 or fruit 



a drupe. Leaves simple, undivided 381 



381. Ovary-cells and styles or style-branches 3. Stamens 10. Flowers in 



panicles. Leaves alternate, exstipulate. Small trees or climbing 



shrubs Asieropeia, 148. Theaceae. 



Ovary-cells and styles or style-branches 5, rarely 3^ — 4, but then stamens 

 4 — 5 or flowers in cone-like racemes 110. Linaceae. 



382. (371.) Leaves stipulate, alternate 383 



Leaves exstipulate 386 



383. Calyx imbricate in bud, 4-partite. Stamens 10. Filaments free or 



united at the base. Anthers turned outwards, 2-celled. Flowers 



unisexual. Trees Heywoodia, 122. Euphorbiaceae. 



Calyx valvate in bud 384 



384. Anthers i -celled (one half only developed). Filaments united. Seeds 



albuminous ; embryo curved. 142. Malvaceae. 



Anthers 2-celled (both halves developed, but sometimes finally con- 

 fluent). 385 



385. Filaments united at the base or higher up. Flowers hermaphrodite or 



polygamous 144. Sterculiaceae. 



Filaments free or united at the base ; in the latter case flowers unisexual. 



141. Tiliaceae. 



