2» ANALYTICAL KKY. 



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



A« Flowers not in catkins. 

 1. Ovary or its cells containing many ovules. 



Ovary and pod inferior (i. c. calyx-tube adherent to tlie ovary), 



Six-celled: stamens 6 -12. .... AKiSTOLOCniACEiE, 403 



Four-celled: stamens 4 Ludwigia, in Oxagkace.i;, 176 



One-celled, with parietal placentae. Chrysosplenium, in Saxxfkagace^,. 163 



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



Two-celled, 2-heaked : flowers capitate : tree. . . Hamamelace^, 173 



. Two-celled, many-ribbed : aquatic herb. . . Podostemace^, 429 



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



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



fall off at maturity : stamens 10. Penthorum, in Crassulace^, 171 



Three -5-celled, opening round the middle. Sesuvium, in Portulacace^, 97 



Three-celled and 3-valvcd. . . Mollugo, in Caryopiiyllace^e, 87 



Two-celled or one-celled : placenta central. 



Stamens inserted on the throat or tube of the calyx. Lytiirace.e, 182 



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



Alternate with the 5 sepals. . . Glaux, in Primulace.e, 313 



Opposite the sepals when of the same number. Caryophyllace>e, 87 



One-celled, with one parietal placenta. ) ^ 



^ . „ . • , > . . . Eanunculace^, 34 



Ovaries 2 or more, separate, simple. ) 



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



# Pistils more than one, and distinct or nearly so. 



Stamens inserted on the calyx. Leaves with stipules. . . Rosace.e, 146 

 Stamens inserted on the receptacle. 

 Leaves punctate with pellucid dots. . Zanthoxylum, in Rctace.e, 109 

 Leaves not dotted. 



Calyx present, and usually colored or petal-like. Ranuncueace.b, 34 



Calyx absent. Flowers entirely naked, perfect, spiked. Saururace.e, 42) 



* * Pistil one, either simple or compound. 



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



2-celled : styles 2 : stamens many. . . . Hamamelace.e, 173 

 Ovary wholly inferior (in perfect or pistillate flowers). 

 Aquatic herbs : ovary 3-4 celled, or (Hippuris) 1-celled. Halorage.e, 174 

 Woody plants : style or stigma one, entire : ovary 1-celled. 



Stigma running down one side of the style. Nyssa, in Cornace,i;, 199 



Stigma terminal, with or without a style. 

 Parasitic on the branches of trees : anthers sessile. Loranthace.e, 426 

 Not parasitic above ground : anthers on filaments. Santalace.??, 425 



