ANALYTICAL KEY. 16 



* Not more than 10 stamens, or if so not more than twice the number of PAGB 



the sepals or divisions of the calyx. 

 Calyx free from the two or more separate or nearly separate 



ovaries. 

 Woody twiners, with dioecious flowers, separate stamens opposite as 



many petals, and few pistils . . . MOONSEED F. 48 

 Woody twiners, with monoecious flowers, united stamens, and many 



pistils in a head, in fruit scattered in a spike MAGNOLIA F. 45 

 Trees, with dioecious or polygamous flowers, pinnate leaves, and few 



winged fruits QUASSIA F. 101 



Trees, with dioecious flowers, or herbs with perfect flowers : leaves 



pinnate, pellucid-dotted, strong-scented or aromatic RUE F. 98 

 Herbs or shrubs : leaves not pellucid-dotted : flowers chiefly 



perfect 

 Succulent or fleshy plants : pistils, petals, and sepals all equal in 



number ORPINE F. 170 



Not succulent nor fleshy thickened 



Stamens inserted on the calyx: leaves alternate, 



ROSE F. 141, & SAXIFRAGE F. 164 

 Stamens inserted on a disk adhering to bottom of the calyx: 

 leaves opposite, compound, 



(Staphylea) SOAPBERRY F. 108 



Stamens inserted on the receptacle . . CROWFOOT F. 34 

 -t-Calyx free from the single (simple or compound) ovary ; i.e. ovary 



superior. 



Stamens of the same number as the petals and opposite them 

 Anthers opening by uplifted valves : ovary simple, 1-celled, 



BARBERRY F. 49 

 Anthers opening lengthwise 



Ovary 1-celled, 1-ovuled : styles 5 . . LEADWORT F. 271 

 Ovary 1-celled, with several ovules on a central placenta 

 Style and stigma only one : calyx persistent, 



PRIMROSE F. 273 



Style or stigma clef t or lobed . . PURSLANE F. 79 

 Ovary 5-celled, with several ovules in each cell, 



STERCULIA F. 90 

 Ovary 2-celled, with a pair of erect ovules in each cell, 



VINE F. 106 

 Ovary 2-4-celled, with one erect ovule in each cell, 



BUCKTHORN F. 104 

 Stamens when of the same number as the petals alternate with them, 



sometimes more numerous, sometimes fewer 

 Leaves punctate with pellucid and dark dots, opposite, entire: 



calyx persistent ... ST. JOHN'S-WORT F. 81 

 Leaves punctate with large pellucid dots: leaves alternate or 



compound RUE F. 98 



Leaves not punctate with pellucid dots 



Ovary simple, as shown by the style, stigma, and single pari- 

 etal placenta PULSE F. 116 



Ovary seemingly simple, 1-celled, 1-seeded : style 1, 



(Fumaria) FUMITORY F. 57 

 Ovary compound, as shown by the number of cells, placentas, 



styles, or stigmas 



With 2 parietal placentae, but 2-celled by a partition be- 

 tween : stamens tetradynamous MUSTARD F. 58 

 With 2 parietal placentae, and 1-celled : stamens 6, sepa- 

 rate, not tetradynamous . . . CAPER F. 68 

 With 2 parietal placentae, and 1-celled : stamens 6 in 2 sets, 



FUMITORY F. 57 

 With 3 (rarely 5) parietal placentas, and 1-celled: 



stamens not 6 



Stamens inserted on the calyx, or with 5 clusters of 

 gland-tipped stamen-like bodies, 



SAXIFRAGE F. 164 

 Stamens on the long stalk of the ovary: tendril 



climbers . . PASSION-FLOWER F. 189 

 Stamens on the receptacle 



Flower irregular: style 1 . . VIOLET F. 71 



