CONTENTS. vii 
74. Oxalidaceae . 220 
75. Zygophyllaceae . 220 
76. Rutaceae .•. 221 
Order 29. Polygalales . 221 
Family 77. Polygalaceae . 221 
Order 30. Euphorbiales. 221 
Family 78. Euphorbiaceae . 222 
79. Callitrichaceae . 225 
Order 31. Sapindales . 225 
Family 80. Limnanthaceae . 225 
81. Spondiaceae . 225 
82. Celastraceae . 226 
83. Aceraceae . 226 
Order 32. Rhamnales . 227 
Family 84. Frangulaceae . 227 
85. Vitaceae ... 228 
Order 33. Malvales . 229 
Family 86. Malvaceae . 229 
Order 34. Hypericales . 231 
Family 87. Elatinaceae . 231 
88. Frankeniaceae . 231 
89. Hypericaceae . 231 
90. Cistaceae . 232 
91. Violaceae . 232 
Order 35. Opuntiales. 234 
Family 92. Loasaceae . 234 
93. Cactaceae. 237 
Order 36. Thymeliales. 239 
Family 94. Elaeagnaceae . 239 
Order 37. Myrtales. 240 
Family 95. Lythraceae. 240 
96. Epilobiaceae . 240 
97. Gunneraceae . 248 
Order 38. Umbellales . 249 
Family 98. Hederaceae . 249 
99. Cornaceae . 249 
100. Ammiaceae . 250 
Order 39. Ericales . 258 
Family 101. Monotropaceae. 258 
102. Pyrolaceae.258 
103. Ericaceae . 259 
104. Vacciniaceae . 260 
Order 40. Prinulales . 261 
Family 105. Primulaceae . 261 
Order 41. Oleales . 264 
Family 106. Oleaceae. 264 
Order 42. Gentianales . 264 
Family 107. Gentianaceae .*. 264 
108. Menyanthaceae . 268 
Order 43. Asclepiadales .:. 269 
Family 109. Apocynaceae .•.269 
no. Asclepiadaceae . 270 
Order 44. Polemoniales . 271 
Family in. Cuscutaceae . 272 
112. Convolvulaceae .273 
113. Polemoniaceae . 274 
114. Hydroleaceae . 281 
115. Heliotropaceae .284 
116. Boraginaceae . 284 
f 
