30 



Ovary two or four celled with a single, hanging ovule in each cell. 

 Petals five. Stamens five or ten. Style short or none. Leaves 

 alternate. North American shrubs or trees. CYRILLACE.K. 



Ovary two to five celled with more than one ovule in each cell. 



Leaves provided with glandular, sensitive hairs, and rolled up in the 

 bud, or else smooth but furnished with marginal spines, and 

 slowly folding together when touched. DROSERACE.E. p. 59. 



Leaves not sensitive nor provided with glandular hairs. 



Calyx persistent. Ovary five celled. Style very short. Fruit a 



drupe. Trees of Madagascar. BREXIACE.I:. 

 Calyx deciduous. Ovary generally two celled. Fruit a capsule 



or berry. PITTOSPORACE.E. p. 57. 



61. Stamens arising from scales. Leaves alternate, usually pinnate. 

 Styles united at the apex, often twisted. Fruit consisting of 

 drupes. Tropical trees or shrubs, distinguished by the bitterness 

 of all parts. SIMARUBACE.E. p. 83. 

 Stamens not arising from scales. 



Flowers imperfect in part, some staminate, some pistillate, rarely 

 some perfect. Leaves usually with translucent dots. Calyx 

 valvate or injbricate in the bud. Ovaries three to five, with two 

 or rarely four ovules in each cell. Tropical trees or shrubs. 



XANTHOXYLACE.E. p. 82. 



Flowers all perfect. Mostly herbs. 



Calyx valvate in the bud. Leaves pinnate or bipinnate, without 

 translucent dots. Style single. Stigma three to five cleft. 

 Fruit consisting of three to five achenia. LIMNANTIIACE.F.. p. 77. 



Calyx imbricate in the bud. 



Styles united at the apex. Leaves mostly with translucent dots. 



Anthers with a minute gland at the apex. Calyx persistent. 



RUTACE.E. p. 81. 

 Styles united only at the very base. Leaves mostly compound 



Styles five, persistent. Juice acid. OXALIDACE^E. p. 77. 



62. Placentae in the axis. 63 

 Placentae parietal. 



