ANALYTICAL KEY. 
XIX 
Ovary, 2-5-celled. 
Leaves alternate, with stipules. . . Pomeae, in Rosacea:, 21 
Leaves opposite, without stipules, . some Saxifragacea. 
Leaves alternate, without stipules. . . . Styracacea, 22 
Ovary, l-celled, with the ovules parietal. 
Fleshy plants with no true foliage ; petals many. . Cactacea, 24 
Ovary l-celled, with the ovules rising frcm the base. Portulacacea, 9 
B. Stamens of the sanj,e number as the petals and opposite them. 
Pistils 3-6, separate. Flowers dioecious. Woody 
vines Menispermacea, 5 
Pistil only one. 
Ovary l-celled; anthers opening by uplifted valves. 
Berberidacea, 5-6 
Ovary l-celled; anthers not opening by uplifted valves. 
Style and stigma one ; ovules more than one. Primulacea, 50 
Style one; stigmas three ; sepals two ; ovules 
several. .'.... Portulacacea, 9 
Style twice or thrice forked; flowers monoecious. 
Crotonopsis, in Eupiiorbiacea. 
Ovary 2-4 celled. 
Calix-lobes minute or obsolete; petals valvate. . Vitacea, 15 
Calyx 4-5-cleft, valvatein the bud; petals involute. Rhamnacea, 15 
C. Stamens not more than twice as many as the petals ; ichen of just the 
number of the petals then alternate with them. 
1. Calyx free from the ovary ; i. e. the ovary ivholly superior. 
* Ovaries 2 or more , separate. 
Stamens united with each other and with a large and thick 
stigma common to the two ovaries. Asclepiadacea. 
Stamens unconnected, on the receptacle, free from the calyx. 
Leaves punctate with pellucid dots. . . . Rutacea, 12-13 
Leaves not pellucid-punctate. 
Tree, with pinnate leaves. . Ailanthus, in Simarubacea, 13 
Low shrub, with pinnate leaves. 
Xanthorrhiza, iu Ranunculacea, 3 
Herbs, not fleshy Ranunculacea, 3 
Herbs, with thick, fleshy leaves. . . Crassulacea. 
Stamens unconnected, inserted on the calyx. 
Just twice as many as the pistils (flower symmetrical). 
Crassulacea, 23 
Not just the number or twice the number of the pistils. 
Leaves without stipules Saxifragacea, 22 
