72. AIZOACEAE 189 



6. Ovary-cells one-ovuled Stamens 5. Perianth simple. Flowers in pan- 



icles. — Species 5. South Africa and southern West Africa. 



Psammatropha Eckl. & Zeyh. 

 Ovary-cells several- or many-ovuled 7 



7. Petals or petaloid staminodes numerous, united at the base. Stamens 



numerous. Flowers conspicuous. Leaves exstipulate, fleshy. — 



Species i Orygia Forsk. 



Petals none, but the stamens sometimes intermixed with staminodes. 

 Leaves stipulate 8 



8. Styles linear or slightly club-shaped. Stipules membranous, entire. . 9 

 Styles obovate or wedge-shaped. Stipules fringed or sheath-like. . . 10 



9. Ovules with a long funicle. Seeds crowned by an appendage of the funicle. 



Pericarp firm. — Species 3. Used in medicine. . . . Glinus L. 



Ovules with a short funicle. Seeds without an appendage of the funicle. 



Pericarp thin. Stamens 3 — 10. Glabrous herbs with narrow leaves. 



— Species 10. Tropical and South Africa. Some species are used in 

 medicine Molkigo L, 



10. Eise cup-shaped, lobed or divided. Stamens 3 — 5. Stipules fringed. — 



Species 17. South Ajrica, Madagascar, St. Helena . Pharnaceum L. 



Disc none. Stipules sheath-like. Leaves thread-shaped. — Species 4. 



South Africa Hyperstelis E. Mey. 



11. (I.) Ovary superior. Petals none 12 



Ovary inferior. [Tribe MESEMBRIANTHEMEAE.] 18 



12. Fruit transversely dehiscent, circumscissile. Leaves opposite. [Tribe 



SESUVIEAE.] 13 



Fruit longitudinally dehiscent, loculicidal or septicidal. [Tribe AIZOEAE.] 



14 



13. Ovary 1 — 2-celled. Ovules solitary or few, basal or subbasal. Pericarp 



thick in the upper part. Seed-coat wrinkled. — Species 10. Some of 

 them are used as vegetables or in medicine. (Plate 43.) Trianthema L. 

 Ovary 3 — 5- rarely 2-celled. Ovules numerous, axile. Pericarp thin. 

 Seed-coat smooth. Flowers red. — Species 6. Tropical and South 

 Africa. Some oi them have edible seeds, or serve as vegetables. (In- 

 cluding Diploclioniwn Fenzl and Hclimus Rumph.) Sesuvium L. 



14. Stamens 4 — 5. Ovary-cells and styles 3 15 



Stamens 8 or more 16 



15. Ovary-cells i-ovuled. Filaments long. Fruit roundish. Shrubs with 



silky hairs. Leaves all cauline, opposite or alternate, imbricate, tri- 

 angular-ovate, without Stipules. Flowers axillaiy, yellowish. • — 



Species i. South Africa (Cape Colony) Plinthus Fenzl 



Ovary-cells several-ovuled. Filaments short. Fruit linear-oblong. Gla- 

 brous herbs. Radical leaves lanceolate to ovate, with fringed stipules ; 

 cauline leaves whorled, filiform. Flowers in cj^mes, v/hitish -green. 



— Species 2. South Africa Coelanthum E. Mey. 



