ANALYTICAL KEY. XX1U 



Stipules between the opposite and compound 



leaves (but they are caducous). Staphylea, 82 Sapindace^e. 



Stipules none when the leaves are opposite. 



Stamens 5, monadelphous in a 10-toothed tube 



or cup : leaves simple, all radical. . . 262 Galacine^e. 

 Stamens 10, monadelphous at the base. Leaf- 

 lets 3, obcordate. 71 Oxalidace^e. 



Stamens distinct, free from the calyx. 



Style 1, undivided. 245 (61) Ericacej2. 



Styles 2 - 5, separate. . . . 52 (35) Cartophtllace.e. 



Stamens distinct, inserted on the calyx. 



Styles 2 (rarely 3), or splitting into 2 in fruit. 141 (54) Saxifragace.e. 

 Style 1 : pod enclosed in the calyx, becoming 



1-celled at maturity. . . . 127 (50) Lythrace^e. 



2. Calyx-tube adherent to the ovary, at least to its lower half. 



Tendril-bearing and often succulent herbs. . . 138 (52) Cucukbitace.£:. 

 Not tendril-bearing. 



Ovules and seeds more than one in each cell. 



Ovary 1-celled, many-ovuled from the base. . 63 (36) Poktclacace^:. 

 Ovary 1-celled, with 2 or 3 parietal few -many-seeded placentae. 



Herbs: fruit a capsule 141 Saxifragace^e. 



Shrubs: fruit a berry. .... 136 (53) Grossulace.£:. 



Ovary 2 -several-celled. 



Anthers opening by pores at the apex : style 1. 127 Melastomace^:. 

 Anthers not opening by pores. 



Stamens on a flat disk which covers the ovary. 81 Celastrace^:. 



Stamens on the calyx. 



Style 1 : petals 4, rarely 5 129 (50) Onagraceje. 



Styles 2 or 3, or only one and 3-5-cleft. 141 (54) Saxifragace^;. 

 Ovules and seeds only one in each cell. 



Stamens 10 (instead of many) accidentally and rarely in some 111 Pome^e. 

 Stamens 2, 4, or 8. 



Herbs : flowers not in an involucrate head. . 129 Onagrace.e. 



Herb : flowers in a head, surrounded by a colored 



involucre : stamens 4 161 Cornace^;. 



Shrubs or trees : petals narrow. 



Stamens 4 : style and stigma 1. ... 161 CoRNACEiE. 



Stamens 8 : styles 2 147 Hamamelace^;. 



Stamens 5 : flowers in umbels, or rarely in heads. 

 Fruit dry, splitting in two at maturity : styles 2 : 



flowers mostly in compound umbels. 148 (54) Umbellifer^:. 



Fruit fleshy or berry -like : styles 2-5, separate, or 



united into one 159 (55) Araliace^e. 



