422 193- SAPOTACEAE 



4. Fertile stamens as many as petals. [Subtribe sideroxylinae.] . 5 

 Fertile stamens more than petals 17 



5. Staminodes none, rarely i — 4, small 6 



Staminodes 5 or more 11 



6. Filaments with a leaf-like appendage. Leaves crowded at the top of the 



branches ; stipules linear. Flowers in clusters springing from older 



branches. — Species i. Madagascar. . Cryptogyne Hook, fil. 



Filaments without a leaf-Hke appendage 7 



7. .Anthers converging around the style, oblong. Filaments adnate to the 



long corolla-tube at their base. Sepals free. Endocarp separating and 

 enveloping the 5 seeds. Seeds exalbuminous. Shrubs with long, reddish 

 brown, undivided hairs. Leaves lanceolate, with 2 pouch-shaped 

 auricles at the base of the blade ; side-nerves numerous, somewhat 

 distant, connected by numerous transverse veins. — Species i. Equator- 

 ial West Africa (Gaboon) Delpydora Pierre 



Anthers not converging. Leaves not auricled. Hairs usually 2-parted. 8 



8. Seeds albuminous. Primary side-nerves of the leaves usually approximate. 



— Species 20. Central and South Africa. Some species yield timber 



or edible fruits Chrysophyllum L. 



Seeds exalbuminous, sohtary. Stigma 5-lobed. Primary side-nerves 

 of the leaves somewhat distant. Trees 9 



9. Sepals free or nearly so. Tube of the corolla longer than the segments. 



Anthers opening inwards or laterally. Leaves oblong or ovate ; primary 

 side-nerves straight and connected by numerous transverse veins. — 

 Species 6. Central Africa. They yield timber. . Malacantha Pierre 

 Sepals obviously united at the base. Tube of the corolla as long as or 

 shorter than the segments. Anthers opening outwards. Leaves 

 lanceolate or elliptical ; primary side-nerves arched, connected by a net- 

 work of veins 10 



10. Corolla-tube as long as the segments. Ovules attached below the middle. — 



Species 6. Central Africa. Some have edible fruits. (Under Side- 



roxylon L.) Sersalisia R. Br. 



Corolla-tube shorter than the segments. Ovules attached by the middle 

 or above it. Leaves lanceolate ; stipules linear. — Species 4. Central 

 Africa. They yield timber, edible fruits, and oily seeds. 



Pachystela Pierre 



11. (5.) Ovary 2 — 6-celled 12 



Ovary 8 — 12-celled 16 



12. Filaments much longer than the anthers. Staminodes linear. Style long. 



Ovules attached above the middle. Corolla with a short tube and 



. narrow segments. Seed i, with a very scanty albumen. Trees. Leaves 



lanceolate, stipulate. - • Species 4. West Africa. (Under Sideroxylon 



L.) Bakerisideroxylon Engl. 



Filaments about as long as or slightly longer than the anthers. Ovules 

 attached by the middle or below it 13 



