7 
Flowers all perfect. Butaceas. p. 81. 
Flowers partly imperfect, some staminate, some pistillate, 
some perfect. Xanthoxylaceae. p. 82.| 
15. — Flowers regular. Limnantiiaceae. p. 77. f 
Flowers irregular. 
Fruit with elastic, recurved valves. BalsamixacEae p. 8 l.f 
Fruit without elastic valves. Tropaeolaceae. p. 81-t 
16. — Carpels distinct or solitary. Anthers with recurved valves. 
Behberidaceae. p. 44. 
Carpels united. 'More than one placenta. 
Placentas in the axis. 17 
Placentas parietal. 
Leaves rolled up in the bud, with glandular hairs. 
Droserace.E. p. 59. 
Leaves straight in the bud, without glandular hairs. 
VlOLACEAS. p. 58. 
17. — “Styles more or less united. 18 
Styles distinct to the base. 
Calyx valvate in the bud. TiEiaceAe. p. 75. | 
Calyx imbricate in the bud. 
Marsh plants. Petals small, sessile. Elatinaceao. p. 63. 
Trees or shrubs. Petals conspicuous, stalked. 
Malpigitiaceac. 
18. — - Fruit gynobasic, with the carpels attached to the apex. 20 
Fruit not gynobasic. 
Calyx Valvate in the bud. 19 
Calyx imbricate in the bud. 
Flowers in heads, with an involucrum. CiIeaeNaceae. 
Flowers without an involucrum. 
< £ 
vStamens three, uuited. IIippocrataceae. 
Stamens more than three. 
Calyx glandular. Malpighi ace J5. 
Calyx not glandular. 
Embryo curved. SapINdACIeae. p. 88. 
• Embryo straight. Erythroxylaceae. 
