202. Stamens as many as the petals, 4, opposite and adnate to them. Stigma 1. Calyx entire or toothed. Petals 4, valvate. Shrubs or trees. =55. Proteaceae.= Stamens as many as and alternate with the petals or fewer or more numerous. 203 203. Stigmas or stigma-lobes 1-2. Stamens 2, 4, or 6. Sepals 4. Petals 4. Flowers hermaphrodite. Seeds with curved embryo. Herbs or undershrubs, rarely shrubs. =88. Cruciferae.= Stigmas or stigma-lobes 3, rarely only 1, but then fertile stamens 1, 5, 8, or more. Shrubs or trees. 204 204. Flowers in axillary clusters, hermaphrodite. Sepals and petals valvate in bud. Petals hooded. Stamens 8-10, with 4-celled anthers (or 16-20 united in pairs). Style and stigma simple. _Hua_, =144. Sterculiaceae=. Flowers in panicles. Petals not hooded. Stamens neither with 4-celled anthers nor united in pairs. =127. Anacardiaceae.= 205. (192.) Leaves stipulate. Stamens 9-10. 206 Leaves exstipulate, rarely (_Polygalaceae_) stipulate, but then stamens 8. 207 206. Flowers irregular. Stamens more or less perigynous. Style simple. =105. Leguminosae.= Flowers regular. Stamens hypogynous. Styles 3-4, free or partly united. Trees, shrubs, or undershrubs. _Erythroxylon_, =112. Erythroxylaceae=. 207. Flowers distinctly irregular, hermaphrodite. Stamens 8; filaments united; anthers opening by a pore. Style 1. Shrubs or trees. Leaves undivided. _Securidaca_, =120. Polygalaceae=. Flowers regular or nearly so, rarely distinctly irregular, but then unisexual or with 10 stamens. Anthers opening by longitudinal slits. 208 208. Flowers unisexual. Stamens as many as and opposite the petals or more. Leaves simple or digitate. =80. Menispermaceae.= Flowers hermaphrodite or polygamous, rarely (_Anacardiaceae_) unisexual, but then stamens alternating with the petals or leaves pinnate. 209 209. Stamens distinctly perigynous, 4, 8, or 10. Style simple; stigma entire. Leaves undivided. Shrubs. =171. Thymelaeaceae.= Stamens hypogynous or nearly so, rarely (_Anacardiaceae_) distinctly perigynous, but then stigma lobed and leaves pinnate. 210 210. Stamens as many as and opposite the petals, 4-5. Calyx little developed, entire or obscurely toothed. Shrubs. Leaves undivided. =57. Opiliaceae.= Stamens as many as and alternate with the petals or more. Calyx distinctly developed. 211 211. Stamens 6. Sepals 4. Petals 4. Embryo curved. Herbs or undershrubs, rarely shrubs. Leaves simple. =88. Cruciferae.= Stamens 4 or more, rarely 6, but then sepals 3 and petals 3. Shrubs or trees. 212 212. Stamens numerous; filaments united. Style thread-shaped. Corolla with imbricate or contorted aestivation. Leaves opposite, undivided. Shrubs. _Endodesmia_, =149. Guttiferae=. Stamens 4-20; if more than 10, then style short and thick, corolla with valvate aestivation, and leaves pinnate. 213 213. Ovule with ventral raphe. Stamens 10. Leaves with 1-3 transparently dotted leaflets. _Eriander_, =115. Rutaceae=. Ovule with dorsal raphe. =127. Anacardiaceae.=