ANALYTICAL KEY. XXVll 



Lobes of the corolla 4,valvate in the bud : seeds suspended. 356 (73) Oleace.e. 

 Lobes of the corolla 5 or more, convolute in the bud : seeds 



erect from the base of the cells. . . . (73) Jasmin ace.e. 



Division III. APETALOUS : corolla (and sometimes the calyx) wanting. 



A. Flowers not in catkins. 



* Ovary or its cells containing many ovules. 



Ovary and pod inferior (i. e. calyx-tube adherent to the ovary), 



Six-celled : stamens 6-12 359 Aristolochiace.e. 



Four-celled : stamens 4 Ludwigia, 129 Onagraceje. 



Three-celled: flowers monoecious : stamens many. (53) Begoniace.e. 



One-celled, with 2 parietal placentae. Chrysosplenium, 141 Saxii-kagace^e. 



Ovary and pod wholly naked (there being no calyx), 



Two-celled, 2-beaked : flowers capitate, monoecious : tree. 147 Hamamelace^e. 



Two-celled, many-ribbed : aquatic herb. . . 384 Podostemace.*. 



Ovary and pod, &c. superior, i. e. free from the calyx, 



Five-celled and 5-beaked, opening across the beaks 



which fall off at maturity : stamens 10. Penthorum, 139 Crassolaoe^e. 



Three -5-celled, opening round the middle. Sesuvium, 63 Portclacace,e. 



Three-celled and 3-valved. . . Mollugo, 53 Caryophyllace;e. 



Two-celled or 1-celled: placentas central. 



Stamens inserted on the throat or tube of the calyx. 127 (50) Lythrace^e. 



Stamens inserted on the receptacle or the base of the calyx, 



Alternate with the 5 sepals. . . . Glaux, 270 PRiMULACEiE. 



Opposite the sepals when of the same number. 



Flowers with scarious or colored bracts. . 367 Amarantacea:. 



Flowers without such bracts. ... 52 Caryophyllace2E. 



One-celled, with one parietal placenta. . . ) _ 



1 2 Ranunculace^e. 



' 1 



Ovaries 2 or more, separate, simple. . 



* * Ovary or its cells containing only 1 or 2, rarely 3 or 4, ovules. 



-*- Pistils more than one, and distinct or nearly so. 



Stamens inserted on the calyx. Leaves with stipules. 110 (45) Rosacea 



Stamens inserted on the receptacle. 



Leaves punctate, with pellucid dots. . . Zanthoxylum, 74 Rutace.e 

 Leaves not dotted. 



Calyx present, usually colored or petal-like. 2 (30) Randnculace^ 



Calyx absent. Flowers entirely naked, perfect, spiked. 383 Saururace^e 



*~ +- Pistil one, either simple or compound. 



Ovary partly inferior, the calyx coherent to its lower half, 



2-celled : styles 2 : stamens many. . . . 147 Hamamelace;e 



