14 ANALYTICAL KEY 



Ovary 5-celled 58. GERANIACEAE, 302 



Cells of the ovary twice as many as the sepals. 



Leaves abruptly pinnate 61. ZYGOPHYLLACEAE, 306 



Leaves simple 60. LINACEAE, 304 



Shrubs or trees, with opposite leaves. 



Leaves palmately veined 69. ACEBACEAE, 313 



Leaves pinnately veined 68. CELASTRACEAE, 313 



Ovules and usually seeds several or many in each cell. 

 Leaves compound; the leaflets 3, obcordate 



59. OXALIDACEAE, 304 



Leaves simple. 



Stipules present between opposite leaves 



73. ELATINACEAE, 319 



Stipules none when the leaves are opposite. 

 Style 1. 



Stamens frefe from the calyx. 



With broad green leaves 86. PYROLACEAE, 366 



Without green leaves 87. MONOTROPACEAE, 368 



Stamens inserted on the calyx 80. LYTHRACEAE, 332 



Styles 2-5; leaves opposite 42. CARYOPHYLLACEAE, 180 



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



Tendril-bearing and often succulent herbs 112. CTJCTJRBITACEAE, 472 



Not tendril-bearing. 



Ovules and seeds more than 1 in each cell. 

 Ovary 1 -celled. 



Sepals or calyx-lobes 2; ovules borne at the base of the 



ovary 41. PORTULACACEAE, 176 



Sepals or calyx-lobes 4-5; placentae 2-3; fruit a berry 



52. GROSSULARIACEAE, 241 

 Ovary 2 many-celled. 



Stamens inserted on or about a flat disk which covers the 



ovary 68. CELASTRACEAE, 313 



Stamens inserted on the calyx. 



Style 1 ; stamens 4 or 8 81. ONAGRACEAE, 333 



Styles 2-3; stamens 5 or 10 51. SAXIFRAGACEAE, 233 



Ovules and seeds only 1 in each cell. 

 Stamens 5 or 10. 

 Trees or shrubs. 



Leaves simple, Crataegus in 55. POMACEAE, 265 



Leaves compound or prickly 83. ARALIACEAE, 346 



Herbs. 



Fruit dry, splitting at maturity; styles 2 84. UMBELLIFERAE, 346 

 Fruit berry-like; styles 2-5, separate or united 83. ARALIACEAE, 346 

 Stamens 4 or 8. 



Style and stigma 1 ; fruit a drupe 85. CORNACEAE, 365 



Fruit not drupaceous. 



Style 1 ; stigma 2-4-lobed 81. ONAGRACEAE, 333 



Styles or sessile stigmas 1 or 4 82. HALORAGIDACEAE, 345 



COROLLA OF MORE OR LESS UNITED PETALS 



Stamens more numerous than the lobes of the corolla. 

 Ovary 1-celled. 



Placenta 1, parietal 57. LEGUMINOSAE, 270 



