SYMPETALAE bl 



684. Leaves exstipulate, undivided. Shrubs or trees. Flowers solitary or in 



cymes, axillary. Corolla with contorted or valvate aestivation. 



195. Ebenaceae. 



Leaves stipulate, rarely exstipulate, but then herbs or undershrubs, and 



corolla with imbricate, not contorted aestivation. Flowers in racemes 



or panicles, unisexual 122. Euphorbiaceae. 



685. (669.) Ovules 2 in each ovary-cell 686 



Ovules 3 or more in each ovary-cell 701 



686. Stamens as many as and alternate with the divisions of the corolla, or 



fewer 687 



Stamens as many as and opposite the divisions of the corolla, or more. 693 



687. Stamens 4 688 



Stamens 5 — 7, rarely {Dichapetalaceae) 2 — 3 only fertile. . . . 691 



688. Corolla irregular, 5-lobed. Seeds with scanty albumen. Herbs. Leaves 



opposite, lobed, stipulate. . ... Pretrea, 210. Pedaliaceae. 

 Corolla regular, 4-lobed or 4-parted. Seeds with abundant albumen 

 Leaves opposite and exstipulate, or alternate 689 



689. Flowers unisexual. Corolla deeply divided. Fruit a drupe. 



Ilex, 128. Aquifoliaceae. 

 Flowers hermaphrodite or polygamous. Fruit a capsule or nut. . 690 



690. Stamens free from the corolla or slightly adhering to it at the base. 



189. Ericaceae. 

 Stamens evidentl3^ attached to the corolla-tube. 



Plantago, 218. Plantaginaceae. 



691. Ovary 4 — 8-celled. Disc wanting. Corolla deeply divided. Flowers 



unisexual Ilex, 128. Aquifoliaceae. 



Ovary 3-celled. Disc present 692 



692. Corolla folded in the bud. Ovules erect. Seeds albuminous. 



Ipomoea, 202. Convolvulaceae. 



Corolla not folded in the bud. Ovules pendulous. Stigmas 3. Seeds 



exalbuminous. Shrubs or trees. Leaves stipulate. 121. Dichapetalaceae. 



693. (686.) Stamens as many to twice as many as the divisions of the cor 



olla 694 



Stamens more than twice as many as the divisions of the corolla. 698 



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



144. Sterculiaceae. 



Leaves exstipulate, rarely {Oxalidaceae) stipulate, but then sepals free and 



imbricate in bud 695 



695. Style I, undivided 696 



Styles 2 — 8, free or partially united 697 



696. Stamens 8 — 10 ; filaments united ; anthers opening by longitudinal slits. 



118. Meliaceae. 



Stamens 4 — 8 ; filaments free, rarely united, but then anthers opening by 



apical pores. Leaves undivided 189. Ericaceae 



