ANALYTICAL KEY. XXV11 



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

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



erect from the base of the cells. . . . (73) JASMINACE^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 AmsTOLOCHiACEyE. 



Four-celled: stamens 4. .... Ludwigia, 129 ONAGRACE^E. 

 Three-celled : flowers monoecious : stamens many. (53) BEGONIACE^:. 



One-celled, with 2 parietal placentas. Chrysosplenium, 141 SAXIFRAGACE.E. 

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



Two-celled, 2-beaked : flowers capitate, monoecious : tree. 147 HAMAMELACEJS. 

 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 CRASSULAOE.E. 

 Three - 5-celled, opening round the middle. Sesuvium, 63 PORTULACACE.E. 

 Three-celled and 3-valved. . . Mollugo, 53 CARYOPIIYLLACE^E. 



Two-celled or 1-celled : placentce central. 



Stamens inserted on the throat or tube of the calyx. 127 (50) LYTHRACE^J. 

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

 Alternate with the 5 sepals. . . . Glaux, 270 PRIMULACE^B. 

 Opposite the sepals when of the same number. 



Flowers with scarious or colored bracts. . 367 AMARANTACE^:. 

 Flowers without such bracts. ... 52 CARYOPIIYLLACE-ZE. 



One-celled, with one parietal placenta. ... 1 



> 2 KANUNCULACE^S. 

 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) ROSACES. 



Stamens inserted on the receptacle. 



Leaves punctate, with pellucid dots. . . Zanthoxylum, 74 RUTACE^B. 

 Leaves not dotted. 



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



Calyx absent. Flowers entirely naked, perfect, spiked. 383 SAURURACE^B. 



*- - Pistil one, either simple or compound. 

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



2-celled : styles 2 : stamens many. . . . 147 HAMAMELACE^S. 



