1 6 A PETAL AE 



i66. Stamens 2. Stades 2. Embryo straight. Leaves radical. 



Gunnera, 183. Halorrhagaceae. 



Stamens 3 — 5. Styles 4, or a single style. Embryo curved. Leaves 



alternate 72. Aizoaceae. 



167. (154.) Ovules 2^5 168 



Ovules numerous 174 



168. Ovules adnate to the ovary-wall. Stamens 2 — 6. Shrubs parasitic on 



the stem of trees 61. Loranthaceae. 



Ovules free from the ovary-wall. Plants growing on the ground or 



parasitic upon roots i6g 



i6g. Ovules suspended from the apex of the ovary-cell. Stamens 8 — 10, 



rarely 4 — 5. Seeds exalbuminous. Shrubs or trees. Flowers in spikes, 



racemes, or heads 179. Combretaceae. 



Ovules inserted on a central, sometimes subparietal, placenta. Seeds 



albuminous 170 



170. Styles 4. Ovules 4. Stamens 4. Perianth of the male flowers consisting 



of calyx and corolla. Herbs or undershrubs. . 



Laurembergia , 183. Halorrhagaceae. 

 Style I. Perianth of all flowers simple. 171 



171. Stigma 6 — lo-lobed. Stamens 5. Albumen ruminate. Shrubs or trees. 



Octoknema, 60. Octoknemataceae. 

 Stigma entire or 2 — 5-lobed 172 



172. Stamens 8, twice as many as the perianth-segments. Embryo with 



inferior radicle. Shrubs. Leaves opposite. 



Grubbia, 58. Grubbiaceae. 



Stamens 2 — 6, as many as, or fewer than, the perianth-segments. Embryo 



with superior radicle or undivided 173 



173. Stem and leaves or scales green. Embrj^o with 2 cotyledons. 



56. Santalaceae. 

 Stem and leaves not green ; stem herbaceous ; leaves scale-like. Flowers 

 unisexual, in spikes or heads. Embryo without cotyledons, 



62. Balanophoraceae. 



174. (167.) Placentas apical. Style wanting. Stamens 3 — 4, united. Flowers 



hermaphrodite. Stem herbaceous, not green, bearing neither leaves 



nor scales Hydnora, 65. Hydnoraceae. 



Placentas parietal. Style present. Stem bearing leaves or scales. 175 



175. Filaments united, 8 or more. Style i. Embryo without cotyledons. 



Herbs. Leaves scale-like, not green. Flowers unisexual. 



64. Rafllesiaceae. 



Filaments free. Embryo with 2 cotyledons. Shrubs or trees. Leaves 



well developed 176 



176. Flowers unisexual. Perianth 4 — 5-parted. Stamens 4 — 5. Style i. 



Grevea, 96. Saxifragaceae. 



Flowers hermaphrodite. Perianth 7 — 8-parted. Stamens numerous. 



Styles 2 — 3 Bembicia, 159. Flacourtiaceae. 



