20 ANALYTICAL KEY. 



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

 Calyx caducous ; juice milky or colored. . . PAPAVERACE.E, 57 



Calyx deciduous, of 4 sepals CAPPARIDACEJE, 74 



Calyx persistent, of 3 or 5 sepals. .... CISTACE.E, 76 



Ovary compound, several-celled. 

 Calyx valvate in the bud, and 



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

 Deciduous; anthers 2-cel led . . . TILIACE^E, 101 



Calyx imbricated in the bud, persistent. 



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

 Aquatic or marsh herbs ; ovaries many, 



On 5 placenta? in the axis. . . . SARRACENIACE.E, 57 

 On the 8-30 partitions NYMPEUEACE^E, 54 



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



Ovary 8 -30-celled ; ovules many, on the partitions ; aquatic. NYMPH JEACE^E, 54 



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



Ovary 2 - 5-celled. 



Leaves alternate, with stipules. . . . Pomese, in ROSACE^E, 151 

 Leaves opposite, without stipules. . . Some SAXIFRAGACE^E, 168 

 Leaves alternate, without stipules STYRACACE^E, 333 



Ovary 1-celled, with the ovules parietal. 



Fleshy plants with no true foliage : ; petals many. . CACTACE^:, 186 

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



Ovary one-celled, with the ovules rising from the base. PORTULACACE^S, 90 



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



Pistils 3-6, separate ; flowers dioecious ; woody vines. MENISPERMACE^E, 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^E, 328 



Style 1 ; stigmas 3 ; sepals 2 ; ovules several. PORTULACACE^E, 90 



Style twice or thrice forked ; flowers monoecious. 



Crotonopsis, in EUPHORBIACE^E, 458 



Styles 5 ; ovule and geed only one. . . . PLUMBAGINACE^, 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^E, 1 1 1 



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



of the petals then alternate with them. 

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



* Ovaries 2 or more, separate. 

 Stamens 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 



