1261:(A)
previous:1151
Ovary 1, undivided or lobed.
next:1262

1261:(B)
Ovaries 2 -more, free or connate at base only.
next:1303

1262:(A)
previous:1261
Ovary 1-locular, sometimes incompletely so.
next:1263

1262:(B)
Ovary 2-more-locular or nearly so.
next:1278

1263:(A)
previous:1262
Ovule 1. Shrubs or trees. Leaves usually alternate. Endosperm absent or scanty.
next:1264

1263:(B)
Ovules 2-more, rarely 1, then herbs or undershrubs, leaves usually opposite, stipules usually present.
next:1267

1264:(A)
previous:1263
Stipules absent.
next:1265

1264:(B)
Stipules present. Ovule erect.
next:1269

1265:(A)
previous:1264
Ovule pendulous, adnate to the ovary-wall, or pendulous from a basal funicle.
next:1266

1265:(B)
Ovule basal, erect. Tropical Africa. (Stapfiella, also in Flacourtiaceae)

1266:(A)
previous:1265
Bark usually with black (poisonous!) resin. Staminodes, if present, not petaloid.

1266:(B)
Bark without resin. Staminodes 3-6, petaloid. Calyx imbricate. Fertile stamens 3-6, epipetalous. Styles 2. New Guinea to New Zealand.

1267:(A)
previous:1263
Trees. Flowers in radiate capitules, connate at base, only the outer with 1-4 petals and then usually strongly zygomorphic. Stamens 7-10. Styles 2. Ovules parietal, 1 or 2. Endosperm present. S.E. Asia. (Rhodoleiaceae)
Rhodoleiaceae
1267:(B)
Plants otherwise. Flowers usually actinomorphic or nearly so.
next:1268

1268:(A)
previous:1267
Endosperm present.
next:1270

1268:(B)
Endosperm absent. Woody plants. Leaves alternate, undivided. Stipules absent. Flowers in racemes. Anthers extrorse. Styles 4-7. Ovules basal or parietal. Embryo straight.

1269:(A)
previous:1264
Calyx valvate. Stamens 4-7, epipetalous. Style 2-4-partite,.

1269:(B)
Calyx and corolla imbricate. Stamens 3-9, usually more than the petals, if as many alternipetalous. Styles usually 3, less often simple with 3 free stigmas.

1270:(A)
previous:1268
Ovules 2 -more, parietal.
next:1271

1270:(B)
Ovules basal or central, 1-more. Herbs or undershrubs. Leaves undivided, usually opposite. Stipules present. Embryo more or less curved.

1271:(A)
previous:1270
Anthers introrse or latrorse, rarely extrorse, then stem woody, and calyx valvate.
next:1272

1271:(B)
Anthers extrorse. Herbs, usually with stalked glands or glandular hairs. Leaves involute in bud. Calyx imbricate. Stamens as many as petals, 4-8.

1272:(A)
previous:1271
Corolla imbricate or valvate, if contort stamens twice as many as the petals, 8 - 10.
next:1273

1272:(B)
Corolla contort. Stamens 5, as many as the petals. Calyx caducous.

1273:(A)
previous:1272
Styles apical on the ovary, adjacent at base, rarely somewhat distant, then plants woody and stipules present.
next:1274

1273:(B)
Styles subapical on the ovary, free to base. Erect or prostrate herbs. Stipules absent. Stamens 5, as many as the petals. Aril absent. S. America.

1274:(A)
previous:1273
Stem erect. Tendrils absent. Corona usually absent, rarely present, exceptionally double. Ovary (sub-)sessile.
next:1275

1274:(B)
Climbers. Tendrils present, plants rarely erect without tendrils. Corona usually present. Ovary usually stipitate. Stamens 4-6, as many as the petals, alternipetalous, rarely more. Styles or style-branches 3, rarely 4 or 5. Aril present.

1275:(A)
previous:1274
Stem herbaceous.
next:1276

1275:(B)
Stem woody. Leaves undivided.
next:1277

1276:(A)
previous:1275
Staminodes absent.

1276:(B)
Staminodes present. (Parnassiaceae)
Parnassiaceae
1277:(A)
previous:1275
Leaves 3-foliolate, apparently in whorls of 6 leaflets. Australia. (Baueraceae)
Baueraceae
1277:(B)
Leaves undivided, alternate.

1278:(A)
previous:1262
Ovule 1 per locule.
next:1279

1278:(B)
Ovules 2-more per locule.
next:1290

1279:(A)
previous:1278
Ovule erect or ascending.
next:1280

1279:(B)
Ovule pendulous or descending. Woody plants.
next:1283

1280:(A)
previous:1279
Stamens as many as the petals, alternipetalous, or more.
next:1281

1280:(B)
Stamens 4 or 5, epipetalous. Woody plants. Leaves undivided. Calyx valvate. Endosperm present. Embryo straight.

1281:(A)
previous:1280
Herbs. Flowers bisexual. Embryo straight.
next:1282

1281:(B)
Woody plants. Flowers polygamous. Embryo curved. Endosperm absent

1282:(A)
previous:1281
Radical leaves undivided, cauline ones pinnatifid. Calyx valvate. Fruit a capsule. Australia. (Eremosynaceae)
Eremosynaceae
1282:(B)
Leaves all entire. Calyx imbricate. Fruit a schizocarp or nutlets 2-5.

1283:(A)
previous:1279
Filaments free, if connate at base plant glabrous. Leaves alternate and endosperm present.
next:1284

1283:(B)
Filaments connate at base. Indument with medifixed hairs. Leaves undivided, opposite. Anthers with longitudinal slits. Fruits indehiscent. Endosperm absent.

1284:(A)
previous:1283
Leaves compound, alternate.
next:1285

1284:(B)
Leaves simple, alternate, or opposite.
next:1286

1285:(A)
previous:1284
Stipules present. Stamens as many as the petals. Styles 3. Endosperm absent. Leaves pinnately compound.

1285:(B)
Stipules absent. Stamens twice as many as the petals. Styles or style-branches 4 or 5. Endosperm present.

1286:(A)
previous:1284
Ovary irregularity 20-locular, apex with a hollow tubule, inside with 5 stigmatic lines and a central column, which simulates a style. Leaves alternate. Stipules minute. Flowers axillary, solitary or in cymes. Stamens 5. S.E. Asia to N.E. Australia. (Siphonodontaceae)
Siphonodontaceae
1286:(B)
Ovary and style different.
next:1287

1287:(A)
previous:1286
Stipules absent, when present leaves opposite and anthers with longitudinal slits.
next:1288

1287:(B)
Stipules present. Leaves alternate, rarely opposite, then, as usual, anthers with valves. Flowers in spikes or capitules. Styles 2. Fruit a capsule. Endosperm present. (Hamamelis, Trichocladus)

1288:(A)
previous:1287
Leaves alternate. Stipules absent. Styles 2.
next:1289

1288:(B)
Leaves opposite. Stipules present. Flowers solitary or in panicles. Stamens 8- 10. Anthers with longitudinal slits.

1289:(A)
previous:1288
Shrublets. Flowers in capitules. Stamens 5, alternipetalous. Fruit a capsule. Endosperm present. S. Africa.

1289:(B)
Shrubs or trees. Flowers in panicles. Stamens 3 - 6, epipetalous. Fruit a drupe. Endosperm absent. S.W. Pacific.

1290:(A)
previous:1278
Ovules 2 per locule.
next:1291

1290:(B)
Ovules 3 -more per locule.
next:1297

1291:(A)
previous:1290
Leaves opposite. Stem woody.
next:1292

1291:(B)
Leaves alternate.
next:1293

1292:(A)
previous:1291
Stipules absent. Flowers unisexual or polygamous. Fruit a winged schizocarp. Endosperm absent.

1292:(B)
Stipules present. Flowers bisexual. Fruit dehiscent, or dry and indehiscent. Endosperm present.

1293:(A)
previous:1291
Ovules pendulous. Leaves undivided.
next:1294

1293:(B)
Ovules erect or ascending. Flowers bisexual.
next:1296

1294:(A)
previous:1293
Stipules present, sometimes early fugacious.
next:1295

1294:(B)
Stipules absent. Ericoid shrubs. Flowers bisexual, in capitules. Stamens 5. Styles 2. Fruit a capsule. S. Africa.

1295:(A)
previous:1294
Fruit usually a capsule. Endosperm present. Flowers unisexual.

1295:(B)
Fruit a drupe, sometimes ultimately dehiscent. Endosperm absent. Stem woody. Leaves beneath often with small saucer-shaped glands, especially near the base. Flowers in fasciculate or umbellate cymes, these sometimes reduced, rarely to 1 flower. Petals often bifid or emarginate. Stamens 5. Disk intra-staminal, 5-lobed.

1296:(A)
previous:1293
Leaves undivided. Flowers in racemes or in panicles. Stamens 5. Styles 2. Ovules erect. Fruit a capsule or a nut.

1296:(B)
Leaves pinnately compound. Flowers in racemes. Stamens 8. Styles 3. Ovules ascending. Fruit a capsule.

1297:(A)
previous:1290
Stamens 5, as many as the petals. Stem woody.
next:1298

1297:(B)
Stamens twice as many as the petals, 8-10, or petals 1-6 and stamens 7 - 10.
next:1299

1298:(A)
previous:1297
Leaves alternate, undivided. Flowers in 2- or many-flowered capitules. Anthers with 2 lateral valves. Styles 2. Flowers actinomorphic. Staminodes 5. (Disanthus)

1298:(B)
Leaves opposite, usually compound. Flowers in panicles. Anthers with longitudinal slits. Styles or style-branches 3. Corolla imbricate.

1299:(A)
previous:1297
Leaves usually alternate. Stipules absent.
next:1300

1299:(B)
Leaves opposite. Stipules present. Stem woody. Flowers in capitules, or in racemes, or in panicles.

1300:(A)
previous:1299
Stem woody. Leaves simple. Petals 1 - 6. Stamens 7 - 10.
next:1301

1300:(B)
Stem herbaceous, rarely woody, then leaves trifoliolate. Stamens 8-10, twice as many as the petals.
next:1302

1301:(A)
previous:1300
Flowers in radiate capitules, more or less zygomorphic, bisexual, surrounded by a coloured involucre. Styles 2, free. China to Malaya. (Rhodoleiaceae)
Rhodoleiaceae
1301:(B)
Flowers in axillary racemes or panicles, actinomorphic, unisexual or polygamous, without a coloured involucre. Stigmas 3, subsessile. Mascarenes. (Psiloxylaceae)
Psiloxylaceae
1302:(A)
previous:1300
Herbs.

1302:(B)
Stem woody. Leaves trifoliolate, apparently in whorls of 6 leaflets, sessile. Australia. (Baueraceae)
Baueraceae
1303:(A)
previous:1261
Stipules present.
next:1304

1303:(B)
Stipules absent.
next:1307

1304:(A)
previous:1303
Leaves alternate.
next:1305

1304:(B)
Leaves opposite. Leaves usually compound. Flowers in panicles. Stamens 5.

1305:(A)
previous:1304
Flowers bisexual or polygamous.
next:1306

1305:(B)
Flowers unisexual. Trees. Leaves pinnately lobed. Stipules antidromous. Flowers in capitules. Stamens as many as the petals. Ovule 1 per carpel.

1306:(A)
previous:1305
Herbs. Leaves alternate, compound. Flowers in panicles. Stamens 8-10. Carpels adnate at base with the receptacle. Ovules 2 or 3 per carpel.

1306:(B)
If not as above, try:.

1307:(A)
previous:1303
Anthers extrorse or with valves. Carpels many. Leaves opposite, undivided. Carpels indehiscent.
next:1308

1307:(B)
Anthers introrse with longitudinal slits. Carpels 3- 10.
next:1309

1308:(A)
previous:1307
Anthers usually with valves. Ovule 1 per carpel. Endosperm copious.

1308:(B)
Anthers with longitudinal slits. Ovules 2 per carpel. Endosperm very scanty. China. (Chimonanthus)

1309:(A)
previous:1307
Leaves simple, undivided or lobed.
next:1310

1309:(B)
Leaves compound. Stem woody. Leaves alternate. Flowers in racemes or panicles. Carpels 3-5, each with 2 collateral ovules.

1310:(A)
previous:1309
Carpels as many as the petals, 4 - 10, rarely 3, then stamens 3. Endosperm absent or very scanty.
next:1311

1310:(B)
Carpels 2 or 3, less than the petals. Stamens 8-10. Endosperm copious. Herbs. Leaves alternate.

1311:(A)
previous:1310
Carpels free or connate at base only.

1311:(B)
Carpels connate to about halfway, 5-8. Carpels circumscissile at the base of the free part. E. Asia, E. N. America. (Penthoraceae, sometimes in Saxifragaceae)
Penthoraceae