158:(A)
previous:A
previous:16
Plant with chlorophyll, if hemi-parasitic haustorial organs indistinct and usually lacking in the herbarium. - Try in case of doubt this lead also, as parasites and saprophytes have been taken up in the main key as Well .
next:159

158:(B)
Plant parasitic or saprophytic, either lacking chlorophyll, or hemi- parasitic and attached above the ground (e.g. as an epiphyte) to its host by haustorial organs, or with distinct subterranean connections.
next:2102

159:(A)
previous:B
previous:158
Perianth either absent, or simple, or composed of a calyx and at least one free petal, i.e. at least at base, rarely connate or cohering in the middle or at the apex. ('Archichlamydeae')
next:160

159:(B)
Perianth differentiated into a calyx and petals, which are all connate at least at base. (Metachlamydeae or Sympetalae)
next:1572

160:(A)
previous:159
Perianth either absent, or present, but then consisting of 2-7 (sub-)equal segments not differentiated into a calyx and a corolla, or absent in the female and/or bisexual flowers and present in the male ones, the latter then exceptionally with a calyx and a corolla. ('Apetalae')
next:161

160:(B)
Perianth either differentiated into a calyx and a corolla, or (rarely) consisting of 8-more (sub-)equal segments not clearly differentiated into a calyx and a corolla. ('Choripetalae')
next:547

161:(A)
previous:C
previous:160
Bisexual and/or female flowers without a perianth, sometimes with bracts.
next:162

161:(B)
Bisexual and/or female flowers with a perianth.
next:231

162:(A)
previous:D
previous:161
Flowers unisexual.
next:163

162:(B)
Flowers bisexual or polygamous.
next:214

163:(A)
previous:162
Male flowers without a perianth.
next:164

163:(B)
Male flowers with a perianth.
next:192

164:(A)
previous:163
Style or sessile stigma per flower 1, or 2-more, then connate at base.
next:165

164:(B)
Styles or sessile stigmas per lower 2-more, free to base.
next:177

165:(A)
previous:164
Ovary 2-4-locular or nearly so.
next:166

165:(B)
Ovary 1-locular.
next:167

166:(A)
previous:165
Ovules 1 or 2 per locule, pendulous.
next:175

166:(B)
Ovules 2 per locule, ascending. Leaves undivided. Male flowers in catkins, each with 1(-3) bracts. Female flowers solitary in an involucre of many bracts. Stigmas deeply bifid. Ovary incompletely 2 or 3-locular. Australia, New Caledonia, Fiji.

167:(A)
previous:165
Ovule 1.
next:168

167:(B)
Ovules 2 -more.
next:174

168:(A)
previous:167
Ovule pendulous sometimes from the middle of the adaxial wall.
next:169

168:(B)
Ovule erect.
next:171

169:(A)
previous:168
Flowers in a spike or in a panicle.
next:170

169:(B)
Flowers on a spreading or thickened common receptacle, the female ones immersed in it. Style present. Ovule anatropous.

170:(A)
previous:169
Leaves alternate. Stipules absent. Ovary superior. Stigma deccurrent, crenulate with a median groove. Madagascar.

170:(B)
Leaves opposite. Stipules present. Ovary inferior. Stigma terminal, truncate. S.E. Asia to New Zealand.

171:(A)
previous:168
Leaves simple.
next:172

171:(B)
Leaves pinnately compound. (Carya, Platycarya)

172:(A)
previous:171
Flowers in spikes. Ovule atropous.
next:173

172:(B)
Flowers in glomerules. Ovule campylotropous. (Amaranthus)

173:(A)
previous:172
Leaves usually palmatinerved. Stipules present. Stamens 2 or 3. Fruit a berry. Endosperm present.

173:(B)
Leaves pinninerved. Stipules absent (Myrica) or present, then leaves pinnatifid (Comptonia) Stamens usually 4. Fruit a drupe. Endosperm absent.

174:(A)
previous:167
Parasitic shrubs or undershrubs. Stipules absent. Female flowers with an epigynous disk and 3 staminodes. Anthers with a short, apical slit. Ovules 3, pendulous from the apex of a central placenta. Fruit dry, indehiscent. Endosperm present.

174:(B)
autotrophic shrubs or trees. Stipules present. Disk hypogynous, cupuliform, or reduced to 1 or 2 scales. Anthers with 2 longitudinal slits. Ovules on 2-4 parietal placentas, ascending. Fruit a capsule. Endosperm absent.

175:(A)
previous:166
Leaves simple, usually alternate. Stigmas and locules of the ovary 3 -9.
next:176

175:(B)
Leaves pinnately compound, opposite. Stigmas and locules of the ovary 2, rarely 3, or 4. Stamens 2. Ovules 2 per locule.

176:(A)
previous:175
Stigmas and locules of the ovary 3. (incl. Peraceae)
Peraceae
176:(B)
Stigmas and locules of the ovary 6-9. Flowers in dense capitules with 2 subopposite, white bracts. Male flowers numerous. Female flower 1 per capitule with 15-25 perigynous appendages (staminodes?)

177:(A)
previous:164
Ovaries 2-6.
next:178

177:(B)
Ovary 1.
next:181

178:(A)
previous:177
Ovules numerous per carpel. Leaves opposite. Stipules present. Stamens 15-20. Ovaries 4-6, substipitate.

178:(B)
Ovule 1 per carpel.
next:179

179:(A)
previous:178
Stipules absent. Ovule anatropous. Endosperm copious.
next:180

179:(B)
Stipules present. Ovule atropous. Endosperm scanty.

180:(A)
previous:179
Flowers with an annular or flask-shaped disk (velum) Anthers dehiscing with valves. (Siparunaceae)
Siparunaceae
180:(B)
Flowers without such a velum. Anthers with longitudinal slits.

181:(A)
previous:177
Ovary 1-locular, sometimes incompletely so.
next:182

181:(B)
Ovary 2-4-locular, or nearly so.
next:186

182:(A)
previous:181
Ovules 2 -more.
next:183

182:(B)
Ovule 1. Flowers in spikes. Ovule erect. Fruit a berry.

183:(A)
previous:182
Ovules 2.
next:184

183:(B)
Ovules 4 - more. Flowers in a spike or a catkin.
next:185

184:(A)
previous:183
Trees. Leaves well developed. Flowers solitary, or the male ones fasciculate. Stamens 6 - 10.

184:(B)
Parasitic herbs. Leaves absent or scale-like. Inflorescence spadix-like, Stamens 2. (Lophophytoideae)

185:(A)
previous:183
Submerged aquatic herbs. Leaves radical. Stipules absent. Stamen 1. Seed glabrous. Endosperm present.

185:(B)
Shrubs or trees. Leaves alternate. Stipules present. Stamens 2-more. Seeds hairy. Endosperm absent.

186:(A)
previous:181
Ovules numerous per locule. Stem woody. Stipules present.
next:187

186:(B)
Ovules 1 or 2 per locule.
next:189

187:(A)
previous:186
Leaves terminally tufted or alternate. Flowers in capitules. Stamens 8 -numerous. Styles and locules of the ovary 2.
next:188

187:(B)
Leaves opposite. Flowers in catkin-like spikes. Stamens 3-8. Ovary-locules and styles 3 or 4.

188:(A)
previous:187
Male inflorescence a terminal raceme of globose staminal clusters, each at first enveloped by a large membraneous bract. Ovules horizontal. (Altingiaceae)
Altingiaceae
188:(B)
Stamens 8 - 10 in distinct flowers. Ovules pendulous. (Chunia)

189:(A)
previous:186
Terrestrials. Leaves usually alternate. Styles more or less apical. Stipules usually present. Stamens 1-many, free or connate. Styles or stigmas and locules of the ovary 2 or 3(- many)
next:190

189:(B)
Aquatics with submerged or floating, opposite leaves. Styles gynobasic. Stipules absent. Stamen 1. Styles 2. Ovary 4-locular. Fruit a schizocarp.

190:(A)
previous:189
Ovules pendulous. Fruit usually a capsule.
next:191

190:(B)
Ovules basal, ascending. Male flowers in catkins. Female flowers solitary, involucrate. Ovary incompletely 2- or 3-locular. Stigmas deeply bifid. Fruit an acorn-like drupe. Australia, New Caledonia, Fiji.

191:(A)
previous:190
previous:206
Embryo minute, apical in copious, oily, blue endosperm. Fruit a 1-seeded drupe. Leaves usually glaucous beneath. Stipules absent. Stamens 6-12. Pistillode absent. Ovary incompletely 2-locular. Stigmas 2, recurved or coiled.

191:(B)
Embryo about as large as the endosperm. Fruit usually a capsule. Stipules usually present. Ovary 3-more-locular, rarely 2-locular, then completely so, (incl. Peraceae, Uapacaceae)
Peraceae Uapacaceae