495. Stamens twice as many as the petals, 8-16. Leaves opposite or whorled. 496 Stamens as many as the petals, 4-6. Seeds albuminous. 497 496. Leaves stipulate. Petals 5-8, toothed or lobed, valvate in bud. Anthers without appendages. Seeds albuminous. _Carallia_, =177. Rhizophoraceae=. Leaves exstipulate. Petals usually 4. Anthers with appendages. Seeds exalbuminous. =181. Melastomataceae.= 497. Stamens opposite the petals. Petals valvate in bud. Ovules pendulous. Fruit a drupe. Leaves alternate. =59. Olacaceae.= Stamens alternating with the petals. Petals imbricate in bud. 498 498. Stigma 1. Ovules erect. Fruit a drupe. Leaves opposite, stipulate. _Pleurostylia_, =129. Celastraceae=. Stigmas 2. Ovules pendulous. Fruit a capsule or a nut. Leaves alternate, exstipulate. =100. Bruniaceae.= 499. (490.) Ovules apical. 500 Ovules parietal. 502 500. Ovules numerous, affixed to 2-3 placentas suspended from the apex of the ovary-cell. Styles 2-3, free. Stamens 5. Flowers hermaphrodite. Fruit capsular. Seeds with abundant albumen. Herbs. Leaves opposite, undivided. _Vahlia_, =96. Saxifragaceae=. Ovules 2-6, suspended from the apex of the ovary-cell. Style 1, entire or cleft. Seeds without albumen. 501 501. Stamens 2-5. Flowers unisexual. Herbs, undershrubs, or shrubs, usually climbing or prostrate. =223. Cucurbitaceae.= Stamens 8 or more, rarely 4-6, but then flowers hermaphrodite. Style simple. Trees, shrubs, or undershrubs. Leaves undivided. =179. Combretaceae.= 502. Flowers unisexual, rarely polygamous. Herbs or undershrubs, rarely shrubs. 503 Flowers hermaphrodite. Shrubs or trees. Seeds albuminous. 504 503. Flowers 5-merous. Stamens 2-5. Seeds exalbuminous. Leaves well-developed. =223. Cucurbitaceae.= Flowers 6-merous. Stamens 12 or more. Seeds albuminous. Leaves scale-like. _Pilostyles_, =64. Rafflesiaceae=. 504. Stamens as many as and alternating with the petals, 5. Petals small. Style 2-cleft. Ovary inferior. Ovules many. Fruit a berry. Leaves lobed. _Ribes_, =96. Saxifragaceae=. Stamens as many as and opposite the petals or in greater number. Style simple, more rarely divided, but then ovary half-inferior. Leaves undivided or wanting. 505 505. Stamens numerous, not collected in bundles. Ovary inferior. Style simple, with several stigmas. Fruit a berry. Succulent, usually leafless plants. =167. Cactaceae.= Stamens as many or twice as many as the petals, or collected in several bundles. Ovary half-inferior. Style simple with an entire or slightly lobed stigma, or more or less deeply divided into 2-6 branches. Leafy plants. 506 506. Petals 5-6, lobed or slit, valvate in bud. Stamens twice their number. Style simple. Ovules 6. Fruit a berry. Leaves opposite or whorled. _Ceriops_, =177. Rhizophoraceae=. Petals 4-8, imbricate in bud. Stamens placed singly or in pairs or bundles opposite the petals; if in pairs or bundles, then style divided. Fruit a capsule. =159. Flacourtiaceae.=