724. Stylar head with 5 gland-like pollen-carriers alternating with and adhering to the anthers. Styles 2, united at the top. Pollen-grains cohering. Disc wanting. =201. Asclepiadaceae.= Stylar head without pollen-carriers, but sometimes adhering to the anthers. Styles partially or wholly united. Pollen-grains free. =200. Apocynaceae.= 725. Styles 2. Ovaries 2 or 4. Ovules together 4. Stamens 5. Corolla with folded or valvate aestivation. Herbs. =202. Convolvulaceae.= Styles 3 or more. Ovaries 3 or more. 726 726. Sepals 2-3. Corolla-lobes 3-6. Stamens 6 or more. Albumen abundant, ruminate. Shrubs or trees. Leaves undivided, exstipulate. =81. Anonaceae.= Sepals 4 or more, rarely 3, but then stamens 3. Albumen scanty or wanting. 727 727. Flowers unisexual. Ovules solitary in each ovary. Fruits indehiscent. Trees. Leaves alternate, lobed, stipulate. _Platanus_, =102. Platanaceae=. Flowers hermaphrodite or polygamous. Ovules 2 or more in each ovary, rarely solitary, but then leaves opposite. Fruits dehiscent. Leaves exstipulate. 728 728. Ovules 2 in each ovary. Flowers 5-merous. Leaves alternate, pinnate. Shrubs or trees. =104. Connaraceae.= Ovules numerous, rarely 1-2 in each ovary, but then leaves opposite and undivided. Herbs or undershrubs, rarely shrubs. =95. Crassulaceae.= 729. (551.) Ovary single, 1-celled. 730 Ovary 2-or more-celled, or 2 separate ovaries. 747 730. Ovules 1-4, not distinctly separated from the tissues of the ovary. Stamens as many as and opposite the divisions of the corolla. Shrubs growing upon trees. _Loranthus_, =61. Loranthaceae=. Ovules distinctly developed. Stamens as many as and alternate with the divisions of the corolla, or more, or fewer, rarely opposite the divisions, but then ovules numerous. 731 731. Ovule 1. 732 Ovules 2 or more. 740 732. Ovule erect. 733 Ovule pendulous. 734 733. Stigmas 2. Stamens 3-5; anthers coherent. Corolla with valvate or open aestivation. Calyx little developed. Seed exalbuminous. Flowers in heads, rarely in spikes or umbels or solitary. Leaves exstipulate. =226. Compositae.= Stigmas 3. Stamens 9-10; anthers free. Corolla with contorted, calyx with imbricate aestivation. Seed albuminous. Flowers in racemes or panicles. Leaves stipulate. Tendril-bearing shrubs. _Ancistrocladus_, =166. Ancistrocladaceae=. 734. Leaves alternate. 735 Leaves opposite, whorled, or all radical. 737 735. Flowers unisexual. Seed exalbuminous. Climbing or prostrate plants. Stamens 2-5. =223. Cucurbitaceae.= Flowers hermaphrodite. Seed albuminous. Erect shrubs. Leaves undivided. 736 736. Corolla with imbricate aestivation. Stamens 4 or 5. Stigma 1. Fruit dry, indehiscent. Flowers in terminal heads. _Berzelia_, =100. Bruniaceae=. Corolla with valvate aestivation. Stamens 6 or more. Stigmas 2-6. Fruit succulent, drupaceous. Flowers in axillary cymes. _Alangium_, =178. Alangiaceae=. 737. Style 3-parted. Stamens 5. Fruit drupaceous. Shrubs or trees. _Viburnum_, =220. Caprifoliaceae=.