573. Stamens as many as the divisions of the corolla, 4-5. Leaves simple, entire toothed or lobed. Flowers regular. 574 Stamens more than the divisions of the corolla, rarely the same number, but then, as usually, leaves compound. 576 574. Stamens opposite to the divisions of the corolla. Calyx with valvate, corolla with contorted aestivation. Ovules ascending. Leaves stipulate. _Waltheria_, =144. Sterculiaceae=. Stamens alternating with the divisions of the corolla. Leaves exstipulate. 575 575. Ovules erect. Style 2-parted, rarely simple, and then herbs. Calyx with imbricate, corolla with valvate or folded aestivation. =202. Convolvulaceae.= Ovules pendulous. Style simple or wanting. Shrubs or trees. =132. Icacinaceae.= 576. Stamens more than the divisions of the corolla, but fewer than twice as many, 4-7, usually 6. Anthers opening by pores. Corolla 4-lobed. Leaves whorled, undivided, linear. _Salaxis_, =189. Ericaceae=. Stamens as many or twice as many as the divisions of the corolla, or more. Leaves alternate. 577 577. Corolla regular, 5-partite, with imbricate aestivation. Stamens 10, five of them sometimes sterile. Ovules erect, straight. Shrubs or trees. Leaves compound, exstipulate. Flowers in panicles or racemes. _Connarus_, =104. Connaraceae=. Corolla regular, with valvate aestivation, or irregular. Ovules inverted. Leaves usually stipulate. =105. Leguminosae.= 578. (570.) Ovules basal or inserted upon a free central placenta. 579 Ovules parietal. 587 579. Ovules 3, pendulous. Style simple. Fertile stamens as many as and opposite the corolla-lobes, 5-6, or fewer, 3. Flowers regular. Fruit a drupe. Trees, shrubs, or undershrubs. Leaves alternate. _Olax_, =59. Olacaceae=. Ovules 3, ascending, or more. 580 580. Style 3-cleft. Stamens more than corolla-lobes, 8-30, rarely fewer, 3. Sepals 2. Corolla-lobes 5. Herbs or undershrubs. =73. Portulacaceae.= Style simple or 2-cleft, rarely (_Caryophyllaceae_) 3-cleft, but then sepals, corolla-lobes and stamens 5 each. 581 581. Stamens as many as and opposite the divisions of the corolla, 3-7. Style simple. 582 Stamens as many as and alternate with the divisions of the corolla, or fewer or more numerous. 583 582. Fruit a capsule. Herbs or undershrubs. =191. Primulaceae.= Fruit a nut, berry, or drupe. Shrubs or trees, very rarely herbs or undershrubs. Leaves alternate, gland-dotted. =190. Myrsinaceae.= 583. Stamens 5. Flowers regular. 584 Stamens 2, 4, or 8. 585 584. Leaves opposite, stipulate. Corolla deeply divided, with imbricate aestivation. Styles 1 or 3. Herbs or undershrubs. =75. Caryophyllaceae.= Leaves alternate, exstipulate. Styles 1-2. =202. Convolvulaceae.= 585. Stamens 4, free from the corolla, or 8. Flowers regular, 4-merous. Stigma 1. Seeds albuminous. Low shrubs. Leaves whorled, narrow. =189. Ericaceae.= Stamens 4, inserted on the corolla-tube, or 2. 586