64 SYM PETAL AE 



ones, alternate 204. Borraginaceae. 



Ovaries 2, rarely 3 or 5, very rarely 4, but then 2-ovuled, Style or styles 

 stigmatose beneath the thickened apex. Leaves usually opposite. 724 



724. Stylar head with 5 gland-like pollen-carriers alternating with and adhering 



to the anthers. Styles 2, united at the top. Pollen-grains cohering. 



Disc wanting 201. Asclepiadaceae. 



Stylar head without pollen-carriers, but sometimes adhering to the anthers. 

 Styles partially or wholly united. Pollen-grains free. 



200. Apocynaceae. 



725. Styles 2. Ovaries 2 or 4. Ovules together 4. Stamens 5. Corolla 



with folded or valyate aestivation. Herbs. 202. Convolvulaceae. 

 Styles 3 or more. Ovaries 3 or more 726 



726. Sepals 2 — 3. Corolla-lobes 3 — 6. Stamens 6 or more. Albumen 



abundant, ruminate. Shrubs or trees. Leaves undivided, exstipulate. 



81. Anonaceae. 



Sepals 4 or more, rarely 3, but then stamens 3. Albumen scanty or 



wanting. , 727 



727. Flowers unisexual. Ovules solitary in each ovary. Fruits indehiscent. 



Trees. Leaves alternate, lobed, stipulate. 



Plataniis, 102. Platanaceae. 



Flowers hermaphrodite or polygamous. Ovules 2 or more in each ovary, 



rarely solitary, but then leaves opposite. Fruits dehiscent. Leaves 



exstipulate 728 



728. Ovules 2 in each ovary. Flowers 5-merous. Leaves alternate, pinnate. 



Shrubs or trees 104. Connaraceae. 



Ovules numerous, rarely i^ — 2 in each ovary, but then leaves opposite 

 and undivided. Herbs or undershrubs, rarely shrubs. 95. Crassulaceae. 



729. (551.) Ovary single, i-celled 730 



Ovary 2- or more-celled, or 2 separate ovaries 747 



730. Ovules I — 4, not distinctly separated from the tissues of the ovary. 



Stamens as many as and opposite the divisions of the corolla. Shrubs 



growing upon trees Loranthus, 61. Loranthaceae. 



Ovules distinctly developed. Stamens as many as and alternate with 

 the divisions of the corolla, or more, or fewer, rarely opposite the divisions, 

 but then ovules numerous 731 



731. Ovule 1 732 



Ovules 2 or more 740 



732. Ovule erect 733 



Ovule pendulous 734 



733. Stigmas 2. Stamens 3 — 5 ; anthers coherent. Corolla with valvate or 



open aestivation. Calyx httle developed. Seed exalbuminous. Flowers 

 in heads, rarely in spikes or umbels or solitary. Leaves exstipulate. 



226. Compositae. 

 Stigmas 3. Stamens 9- — 10 ; anthers free. Corolla with contorted. 



