ANALYTICAL KEY. 



Stamens on the calyx; styles 2 or 3 Saxifragaceas, 53 



Shrubs or trees with opposite leaves. 



Pinnately veined, not lobed Celastraceae, 25 



Palmately compound; stamens 4 to 8 Sapindaceae, 37 



2. Ovary and fruit inferior or mainly so. 



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



Shrubs with o])posite leaves; flowers dioecious Ccrnaceae, 63 



Shrubs; stamens opposite the clawed petals Rhamnaceae, 35 



Shrubs; stamens alternate with the petals. 



Leaves alternate; fruit a berry Sasifragaceae, 55 



Leaves opposite, entire; style 1 Cornaceae, G3 



Herbs; fruit a many-seeded capsule Saxifragaceas, 55 



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



Herbs; flowers in umbels; styles 2; fruit dry. Umbelliferae, 63 



Division 2. Gamopetalae : 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 Compositae, 6G 



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 Rubiaceae, 65 



Without stipules, opposite Caprifoliaceee, 64 



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



Leaves opposite; stamens distinct Valerianae eas, 66 



Leaves alternate; stamens united Cucurbitaceae, 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-ovuled, fruit 1-seeded Plumbaginaceae, 71 



Styles 1; capsule at least several-seeded Primulaceae, 72 



