20 ANALYTICAL KEY. 



Ovary compound, 1 -celled, with two or more parietal placentae. 



Calyx caducous; juice milky or colored. . . Papaverace^, 57 



Calyx deciduous, of 4 sepals Capparidace^, 74 



Calyx persistent, of 3 or 5 septals. .... Cistace.^, 76 



Ovary compound, several-celled. 

 Calyx valvate in the bud, and 

 Persistent; stamens monadelphous ; anthers 1 -celled. Malvaceae, 96 

 Deciduous; anthers 2-cel led .... TiLiACEiE, 101 



Calyx imbricated in the bud, persistent. 



Shrubs ; stamens on the base of the petals. Ternstrcemiace^, 95 

 Aquatic or marsh herbs ; ovaries many. 



On 5 placentae in the axis. . . . Sarraceniace.e, 57 



On the 8-30 partitions Nymph^ace.i;, 54 



2. Calyx more or less coherent with the surface of the (compound) ovarj. 



Ovary 8 - 30-celled ; ovules many, on the partitions ; aquatic. Nymph^ace^, 54 



Ovary 10-celled; cells 1-ovuled. . . . Amelanchier, in Rosacea, 166 



Ovary 2 - 5-celled. 



Leaves alternate, Avith stipules. . . . Pomese, in Rosace^e, 151 

 Leaves opposite, without stipules. . . Some Saxifragace.e, 163 

 Leaves alternate, without stipules Styracace^, 333 



Ovary 1 -celled, with the ovules parietal. 



Fleshy plants with no true foliage ; petals many. . C actace^, 1 86 



Rough-leaved plants ; petals 5 or 10 Loasace^, 193 



Ovary one-celled, with the ovules rising from the base. Port u lac ace.e, 90 



B. Stamens of the same number as the petals and opposite them. 



Pistils 3 - 6, separate ; flowers dioecious ; woody vines. MEMSPERMACEiE, 51 

 Pistil only one. 



Ovary one-celled ; anthers opening by uplifted valves. Berberidace^, 52 

 Ovary one-celled ; anthers not opening by uplifted valves. 



Style and stigma one ; ovules more than one. . Primulace^, 328 



Style 1 ; stigmas 8 ; sepals 2 ; ovules several. Portulacace^, 90 



Style twice -or thrice forked ; flowers monoecious. 



Crotonopsis, in Euphorbiace^, 458 

 Styles 5 ; o^nile and seed only one. . . . Plumbagixace.e, 327 

 Ovary 2 - 4-celled. 



Calyx-lobes minute or obsolete ; petals valvate. . . Vitace.e, 112 

 Calyx 4 - 5-cleft, valvate in the bud ; petals involute. Rhamnace^, 1 1 1 



C. Stamens not more than ticice as many as the petals, when of just the number 



of the petals then alternate ivith them. 



L Calyx free from the ovary, i. e. the ovary wholly superior, 



* Ovaries 2 or more, separate. 



iStamens united with each other and with a large and thick 



stigma common to the two ovaries. . . Asclepiadace.e, 338 

 Stamens unconnected, on the receptacle, free from the calyx. 

 Leaves punctate with pellucid dots Rutace^, 106 



