SYMPETALAE 51 



567. Stamens as many as and opposite the divisions of tiie corolla (or corolla- 



like perianth), 4, inserted on the upper part or near the middle of the 

 corolla. Corolla valvate in bud. Seeds exalbuminous. 



55. Proteaceae. 



Stamens as many as and alternate with the divisions of the corolla, or 



fewer or more numerous, inserted on the base of the corolla or free from 



it . 568 



568. Stamens 10, perigynous. Anthers opening by two longitudinal slits. 



Flowers regular 171. Thymelaeaceae. 



Stamens 3—8, hypogynous. . SGq 



569. Flowers regular. Sepals 3 — 4. Corolla-lobes 3 — 4. Anthers opening by 



two pores or slits. Seeds albuminous 189. Ericaceae. 



Flowers irregular. Sepals 5. Corolla-lobes 3 or 5. Stamens 8. Anthers 

 opening by a single pore or slit. Seeds exalbuminous. 



Securidaca, 120. Polygalaceae. 



570. (554-) Ovules 2 57^ 



Ovules 3 or more. 578 



571. Stamens 4, fewer than the divisions of the corolla. Flowers irregular. 



Leaves opposite 572 



Stamens 3 or more, as many as or more than the divisions of the corolla. 573 



572. Anthers opening by pores. Fruit a drupe. Seeds exalbuminous. Climbing 



shrubs. Flowers in clusters. . Afromendoncia, 216. Acanthaceae. 

 Anthers opening by longitudinal slits. Stigmas 2. Fruit a capsule 01 

 nut. Seeds albuminous. Prostrate herbs. Flowers solitary. 



Linariopsis, 210. Pedaliaceae. 



573. Stamens as many as the divisions of the corolla, 4 — 5. Leaves simple, 



entire toothed or lobed. Flowers regular 574 



Stamens more than the divisions of the corolla, rarely the same number, 

 but then, as usually, leaves compound 576 



574. Stamens opposite to the divisions of the corolla. Calyx with valvate, 



corolla with contorted aestivation. Ovules ascending. Leaves stipu- 

 late Waltheria, 144. Sterculiaceae. 



Stamens alternating with the divisions of the corolla. Leaves exstipu- 

 late 575 



575. Ovules erect. Style 2-parted, rarely simple, and then herbs. Calyx 



with imbricate, corolla with valvate or folded aestivation. 



202. Convolvulaceae. 

 Ovules pendulous. Style simple or wanting. Shrubs or trees. 



132. Icacinaceae. 



576. Stamens more than the divisions of the corolla, but fewer than twice 



as many, 4 — 7, usually 6. Anthers opening by pores. Corolla 4-lobed. 



Leves whorled, undivided, linear. . . . Salaxis, 189. Ericaceae. 



Stamens as many or twice as many as the divisions of the corolla, or more. 



Leaves alternate 577 



