66 SYMPETALAE 



745. Stamens numerous. Flowers hermaphrodite. Fruit a berry. Seeds 



albuminous. Succulent, usually leafless plants. . 167. Cactaceae. 

 Stamens 2 — 11. Leafy plants 746 



746. Corolla with contorted aestivation. Stamens 5 — 11. Fruit capsular. 



Seeds albuminous. Leaves opposite or whorled, undivided, stipulate. 



219. Rubiaceae. 



Corolla with valvate, rarely with imbricate aestivation. Stamens 2 — 5. 



Flowers unisexual or polygamous. Fruit berry- or nut-like. Seeds 



exalbuminous. Leaves nearly always alternate. 223. Cucurbitaceae. 



747. (729.) Ovaries 2, distinct. Styles more or less united above, stigmatose 



beneath the thickened apex. Stamens 5. Leaves usually opposite. 748 

 Ovary i 749 



748. Stylar head with 5 gland-like pollen-carriers alternating with the anthers, 



to which the pollen united into masses adheres. Styles free below the 



thickened apex. Disc wanting 201. Asclepiadaceae. 



Stylar head without pollen-carriers, but sometimes adhering to the anthers. 

 Pollen of free grains 200. Apocynaceae. 



749. Ovules solitary in each ovary-cell 750 



Ovules 2 or more in each ovary-cell. 758 



750. Leaves opposite, whorled, or all radical 751 



Leaves alternate 753 



751. Stamens fewer than the divisions of the corolla, i — 3. Ovary 3-celled. 



Seeds exalbuminous. Herbs or undershrubs. 221. Valerianaceae. 

 Stamens as many as the divisions of the corolla 752 



752. Leaves pinnately dissected. Stamens 5. Anthers opening outwards. 



Style 3 — 5-parted. Fruit a drupe. 



Sambucus, 220. Caprifoliaceae. 

 Leaves undivided 219. Rubiaceae. 



753. Flowers unisexual. Stamens as many as or fewer than the divisions of 



the corolla. Seeds exalbuminous. .... 223. Cucurbitaceae, 



Flowers hermaphrodite or polygamous. Stamens as many as or more 



than the divisions of the corolla. Seeds albuminous. Trees, shrubs, 



or undershrubs 754 



754. Stamens as many as and opposite the divisions of the corolla. Corolla 



with valvate aestivation. Ovary 3^ — 4-celled. Leaves undivided. 



59. Olacaceae, 

 Stamens as many as and alternate with the divisions of the corolla or 



more. 



/3D 



755. Flowers irregular. Corolla folded in bud. Ovules erect. Stigma i, 



enclosed by a cup. Leaves undivided. Scaevola, 225. Goodeniaceae. 

 Flowers regular. Ovules pendulous 756 



756. Corolla with imbricate aestivation, divided nearly to the base. Styles 



or stigmas 2. Leaves undivided 100. Bruniaceae. 



Corolla with valvate aestivation 757 



