CHORIPEIALAE 



49 



Petals 4 — 8. Stigma i, entire or lobed. Seeds exalbumin,ous. Shrubs 

 or trees. Leaves undivided, exstipulate 544 



544. Sepals 5 — 8, red, with valvate aestivation. Petals crumpled in the bud. 



Ovules at first basal, finally parietal. Leaves not dotted. 



Punica, 115. Punicaceae. 

 Sepals 2—4, rarely more, but then with imbricate, open, or closed aestiva- 

 tion. Ovules axile ,. . 545 



545. Leaves alternate, rarely dotted. Sepals 2 — 4. Filaments united into a 



cup at the base. 176. Lecythidaceae. 



Leaves opposite, gland-dotted 180. Myrtaceae. 



546. (537-) Stamens 2—10 547 



Stamens numerous 548 



547. Stamens fewer than the petals, at least apparently (by coalescence), 



more rarely as many as the petals, but then, as usually, tendril-bearing 

 herbs. Styles usually 3. Flowers 5-merous, unisexual or polygamous. 

 Fruit more or less berry-like. Seeds exalbuminous. 



223. Cucurbitaceae. 

 Stamens as many as the petals, 4 — 5, and then styles 2 and stem woody, 

 or twice as many. Fruit capsular. Seeds albuminous, rarely exalbumin- 

 ous, but then flowers 4-merous 96. Saxifragaceae. 



548. Petals 3 — 5. Seeds exalbuminous. 549 



Petals numerous. Seeds albuminous. Herbs or undershrubs. . . 550 



549. Flowers unisexual. Sepals and petals not distinctly differentiated, to- 



gether 8 — 9. Ovules many in each ovary-cell. 



Begonia, 165. ' Öegoniaceae. 

 Flowers hermaphrodite. Sepals and petals distinctly differentiated,, 

 together 10. Ovules few in each ovary-cell. Shrubs. 



Cydonia, 103. Rosaceae. 



550. Sepals nearly hypogynous, 4. Ovules inserted upon the dissepiments. 



Fruit bursting irregularly. Embryo straight. Leaves radical, floating, 

 peltate or cordate. Flowers solitary. 



Nymphaea, 76. Nymphaeaceae. 



Sepals epig^Tious, usually 5. Ovules basal or parietal. Fruit opening 



loculicidaUy. Embryo curved. Leaves not floating. Flowers in 



cymes or panicles Mesembryanthemum, 72. Aizoaceae. 



551. (52.) Ovary superior or nearly so. ' 552 



Ovary inferior to half-inferior 728 



552. Ovary i, entire or lobed 553 



Ovaries 2 or more, separate or cohering at the base only. . . .719 



553. Ovary i-celled, sometimes incompletely chambered 554 



Ovary completely or almost completely 2^ or more-celled, at least at the 



time of flowering (sometimes incompletely septate in the bud). 604 



554. Ovule I. 555 



Ovules 2 or more 57® 



D 



