ANALYTICAL KEY 



49. CAPPARIDACEAE, 231 

 41. PORTULACACEAE, 176 



72. MALVACEAE, 316 

 43. NYMPHAEACEAE, 188 



78. CACTACEAE, 326 



53. HYDRANGEACEAE, 243 



Sepals 4 



Plurentae central; juice watery; sepals 2 

 ( >\ ary several-celled. 



Calyx valvate in bud; stamens united 

 Calyx imbricate in bud; stamens not united 

 Miore <>r less united to a compound ovary. 

 try 1-5-cellcd (10-celled in one genus of Pomaceae). 

 Meshy-stemmed, without true leaves; petals numerous 

 Leaves present. 



Sepals or calyx-lobes 2; ovules arising from the base of a 



1-celled ovary 41. PORTULACACEAE, 176 



Sepals or calyx-lobes more than 2. 

 Leaves opposite; stipules none 

 Leaves alternate. 

 Stipules present. 



Carpels distinct, free from the calyx-tube ; fruit achenes, 



follicles, or drupelets. 

 Carpels several or numerous, or if solitary becoming 



an achene 54. ROSACEAE, 245 



Carpel solitary, becoming a drupe 56. DRUPACEAE, 269 



Carpels united, inclosed by and adnate to the calyx- 

 tube; fruit a pome 55. POMACEAE, 265 

 Stipules wanting; herbage rough-pubescent 77. LOASACEAE, 324 



Stamens not more than twice as many as the petals. 



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

 Ovary 2-4-celled. 



Calyx-lobes minute or obsolete ; petals valvate 

 Calyx 4 5-cleft; petals involute 

 Ovary 1-celled. 



Anthers opening by uplifted valves 

 Anthers not opening by uplifted valves. 

 Style 1, unbranched; stigma 1 

 Styles, style branches, or stigmas more than 



calyx-lobes 2 

 Stamens not of the same number as the petals, or if of the same 



number alternate with them. 



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

 Ovaries 2 or more, wholly separate or somewhat united. 



Stamens united with each other and with a large thick stigma 



common to the two ovaries 95. ASCLEPIADACEAE, 



Stamens free from each other and from the pistils. 

 Stamens on the receptacle, free from the calyx. 



Leaves punctate with translucent dots; shrubs 62. RUTACEAE, 

 es without translucent dots; herbs. 



s fleshy 50. CRASSULACEAE, 



es not fleshy. 

 Ovary or lobes of the ovary 2-5, with a common 



Ovary 2-3-lobed 66. LIMNANTHACEAE, 



" lobed 58. GERANIACEAE, 



Ovaries with separate styles or sessile stigmas 



45. RANUNCULACEAE, 



71. VITACEAE, 

 70. RHAMNACEAE, 



315 

 314 



46. BERBERIDACEAE, 204 



90. PRIMULACEAE, 

 1; sepals or 

 41. PORTULACACEAE, 



372 



176 



386 



306 



232 



312 

 302 



189 



