DICOTYLEDONES— THALAMIFLOR^ 



801 



b. Carpels wholly cotnhined {at least as to the 

 ovaries), ivith more than one placenta ; or 

 ivith a free central placenta. 



Placentas parietal, in distinct lines. 



Anthers versatile. Juice watery . 



Anthers innate. Juice milky 

 Placentas parietal, spread over the lining of 

 the fruit . . ' . 



Placentas covering the dissepiments 



Cap)p aridacecB. 

 Papaveracece. 



BixacecE. 

 Nymphceacecp 

 {Nymphcpce). 



Sarraceniacecp. 



Rhizoholacpcp. 



GuttifercE. 



Ma rcgraavlacecE. 



Cist ace ce. 



T ernstrcemiacecE . 

 Portiilacacece. 



Magnoliacecp. 



Placentas in the axis. 



Stigma large, broad, and petaloid . 

 Stigma simple. Calyx imbricate. 



Leaves compound ..... 



Leaves simple. 



Petals equal in number to the sepals. 

 Seeds few ...... 



Seeds numerous. Petals flat 

 Seeds numerous. Petals crumpled . 

 Petals not equal in number to the sepals. 

 Styles not perfectly combined 

 Placentas free central ..... 



B. Leaves ivith stipules. 



a. Carpels more or less distinct {at least as to 



the styles). 

 Carpels numerous ...... 



b. Carpels wholly comhined {at least as to the 



ovaries), with more than one p)lacenta. 

 Placentas parietal ...... 



Placentas in the axis. 



Calj'x with an imbricate aestivation. 



Flowers involucrate ..... 



Flowers not involucrate .... 



Calyx with a valvate aestivation. 



Stamens monadelphous. Anthers 2-celled 

 Stamens monadeli)hous. Anthers 1-celled 

 Stamens monadelphous. Calyx irregular, 



and enlarged in the fruit 

 Stamens quite distinct .... 



2. Floweks with less than 20 stamens. 

 A. Leaves without stipules. 



a. Carpels more or less distinct, or solitary. 



Anthers with recurved valves . 



Anthers with longitudinal dehiscence. 



Albumen abundant, embryo minute. 



Flowers unisexual. Seeds usually nu- 

 merous ... . . Lardizahalacece. 



Biocacece. 



ChlcenacecB. 

 CistacecE. 



SterculiacecE. 

 Malvacece. 



Dipteracece. 

 Tiliacece. 



Berheridacece. 



