ANALYTICAL KEY. 



Stamens on the calyx; styles 2 or 3 Saxifragaceae, 55 



Shrubs or trees with opposite leaves. 



Pinnately veined, not lobed Celastraceae, 35 



Palmately compound; stamens 4 to 8 Sapindaceas, 37 



2. Ovary and fruit inferior or mainly so. 



Tendril-bearing herbs; flowers monoecious, axillary Cucurbitaceae, 63 



Shrubs with opposite leaves; flowers dioecious Ccrnaceae, 63 



Shrubs; stamens opposite the clawed petals Rliamnaceas, 35 



Shrubs; stamens alternate with the petals. 



Leaves alternate; fruit a berry Saxifragaceae, 55 



Leaves opposite, entire; style 1 Cornacea3, 63 



Herbs; fruit a many-seeded capsule Saxifragaceae, 55 



Herbs; parts of the flower mostly in fours (rarely 2 or 6) Onagraceae, 59 



Herbs; flo\vers in umbels; styles 2; fruit dry. Umbelliferae, 63 



DIVISION 2. Gamopetalas: petals more or less united into one piece. 



A. Ovary inferior, or largely so. 



Stamens more numerous than the lobes of the corolla, 8 or 10. 



Distinct and free from it, or nearly so Ericaceae, 68 



Stamens as many as the lobes of the corolla (5, rarely 4), united into a tube. 



Flowers in an involucrate head Composites, 66 



Flowers separate in racemes or spikes Lobeliaceae, 67 



Stamens as many as the corolla-lobes, distinct. 



Nearly or quite free; leaves alternate, no stipules Campanulaceas, 67 



Inserted on the corolla; leaves opposite or whorled. 



With stipules, or in whorls, entire Rubiaceee, 65 



Without stipules, opposite Caprifoliaceas, 64 



Stamens only 3, fewer than the lobes of the corolla. 



Leaves opposite; stamens distinct Valerianaceae, 66 



Leaves alternate; stamens united Cucurbitaceaa, 63 



B, Ovary superior (free), or mainly so. 



1. Stamens more numerous than the lobes of the corolla. 



Pistil single and simple; leaves compound Leguminosae, 38 



Pistils several and simple; leaves simple, fleshy Crassulacese, 58 



Pistil compound, with one undivided style Ericaceae, 68 



2. Stamens as many as the divisions of the corolla and opposite them. 



Styles 5; ovary 1-ovulccl, fruit 1-scedcd Plumbaginaceas, 71 



Styles 1 ; capsule at least several-seeded .Frimulaceae, 72 



