ANALYTICAL KEY. XXV11 



Lobes of the corolla 4,valvate in the bud : seeds suspended. 356 (7 

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



erect from the base of the cells. . . . (73) JASMIXACE.E. 



DIVISION TEL 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 ARISTOLOCHIACB^B. 



Four-celled: stamens 4. . . - . . Ludwigia, 129 ONAGRACELS:. 

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



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

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



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

 Two-celled, many-ribbed : aquatic herb. . . 384 PODOSTEMACE^B. 

 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 CARYOPHYLLACE.E. 



Two-celled or 1-celled: placentae central. 



Stamens inserted on the throat or tube of the calyx. 127 (50) LTTHRACE^E. 

 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^E. 

 Flowers without such bracts. . . . 52 CARYOPHTLLACE^S. 

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

 Ovaries 2 or more, separate, simple. . , . . f 2 RANTJ 



* * 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) ROSACE x. 



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) RANUNCULACEJB. 



Calyx absent. Flowers entirely naked, perfect, spiked. 383 SAURURACEJE. 



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

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



2-celled : styles 2 : stamens many. . . . 147 HAMAMELACEJB. 



