294 113- ZYGOPHYLLACEAE 



Leaves irregularly many-cleft. Flowers rather large. Sepals 4 — 5, 

 linear. Petals 4 — 5, oblong. Stamens 8 — 15. Ovary slightly lobed, 

 with undivided, many-ovul d cells. — Species i. North Africa. The 

 seeds are used medicinally, as a condiment, and for dj-eing. Peganum L. 



5. Leaves unequally pinnate or digitate, rarely unifoliolate ; in the latter 



case disc indistinct and ovules ascending. Filaments without an 



appendage. Ovary 5-celled with i — 2 ovules in each cell. ... 6 



Leaves equally pinnate or undivided, rarely reduced to the stalk. Disc 



distinctly developed. Ovules pendulous 8 



6. Leaves alternate, with .4 — 6 pairs of leaflets. Flowers dioecious. Ovary 



surrounded by strap-shaped scales. Spin}^ shrubs. — Species i. South- 

 west Africa (Namaland) Neoluederitzia Schinz 



Leaves opposite, with i or 3 leaflets. Flowers hermaphrodite. Herbs 

 or undershrubs 7 



7. Calyx valvate in bud. Petals none. Disc 5-lobcd. Str.mens 5. Ovule i 



in each ovary-cell, pendulous. Styles 5, with capitate stigmas. Pros- 

 trate undershrubs. Leaflets 3. — Species 2. South and North-east 



Africa Seetzenia R. Br. 



Calyx imbricate in bud. Petals 5, rose violet or yellowish. Disc obscure. 

 Stamens 10. Ovules 2 in each ovary-cell, suspended from ascending 

 funicles. Style i ; stigma simple. — Species 15. North Africa, northern 

 Central Africa, and South-west Africa. Some are used medicinally. 



Fagonia Tourn. 



8. Leaves alternate, abruptly pinnate, with 6 — 8 pairs of leaflets. Flowers 



large. Sepals saccate at base. Corolla 3'ellow. Disc lobed, with 5 

 glands projecting into the sacks of the sepals. Stamens 10, unap- 

 pendaged. Ovary 5-lobed, with 2 ovules in each cell. Shrubs. — 

 Species i. East Africa (Somaliland). . . . Kelleronia Schinz 

 Leaves opposite, at least the lower ones 9 



9. Ovary lo-celled, with 2 ovules in each cell. Calyx valvate in bud. Petals 



narrow, 3-cleft. Disc cupular, lo-toothed. Stamens 10, with awl- 

 shaped appendages at the base. Fruit winged. Seeds exalbuminous. 

 Erect, succulent herbs. Leaves undivided, club-shaped. — Species i. 



South Africa Augea Thunb. 



Ovary 4— 5-celled. Calyx imbricate in bud 10 



10. Ovary-cells with one ovule in each. Style long ; stigma club-shaped. Disc 

 5-lobed, with five 3-cleft scales opposite the sepals. Stamens 10, 

 appendaged. Fruit capsular. Seeds exalbuminous. Shrubs. — Species 



I. South Africa Sisyndite E. Mey. 



Ovary-cells with 2 or more ovules in each 11 



IT. Ovary-cells later on transversely chambered, 3 — 5-ovuled. Style very short, 

 with a large stigma. Disc thin, lobed. Fruit separating into nutlets, 

 bristly or warty, usually with outgrowths. Seeds exalbuminous. Herbs. 

 Flowers cymose, 5-merous. — Species 12. Some of them have edible 

 seeds or serve as ornamental or medicinal plants . Tribulus Tourn. 



