XXVI 
ANALYTICAL KEY. 
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^e, 23 
Three-celled and 3-valved, or 3-5-celled and circumcissile. 
Ficoide^e. 
Two-celled or 1-celled; placentae central. 
Stamens inserted on the throat or tube of the calyx. 
Stamens inserted on the receptacle or the base of the 
calyx, opposite the sepals when of the same number. 
Lythrace^e. 
One-celled with one parietal placenta, j R ANUNC ulace,e. 
Ovaries 2 or more, separate, simple. ) 
2. Ovary or its cells containing 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. . Rosaceje, 20 
Stamens inserted on the receptacle. 
Leaves pellucid with punctate dots. Xanthoxylum in Rutace^:, 12 
Leaves not dotted, 
Calyx present, and usually colored or petal-like 
Ranunculace.e, 2 
Calyx absent, flowers entirely naked, perfect, spiked. 
Piperace^e, 77 
* — t- Pistil one , either simple or compound. 
Ovary partly inferior, the calyx coherent to its lower half, 
2-celled; styles 2, stamens many. . . . HAMAMELiDEiE, 23 
Ovary totally inferior (in perfect or pistillate flowers). 
Aquatic herb ; ovary 3-4-celled. . . . Halorage^e. 
Mostly woody plants ; style or stigma one, entire ; ovary 1-celled. 
Stigma running down one side of the style. 
Nyssa in CoRNACEiE. 
Stigma terminal, with or without a style, 
Parasitic on the branches of trees; anthers sessile. 
Loranthace^:, 76 
Not parasitic above ground; anthers on filaments. 
Santalace^e. 
Ovary really free from the calyx, but permanently invested 
by its tube, or the base of it, so as to seem inferior. 
Herbs with the calyx colored like a corolla: 
Leaves opposite, simple .... Nyctaginace^e. 
Leaves alternate, pinnate . . Poterium in Rosace^e. 
