IQO 72. AIZOACEAE — J>,. PORTULACACEAE 



16. Stamens numerous. Ovary 4 — 5 -celled. Styles 4 — 5. Ovules 2 or more 



in each cell. Flowers yellow. — Species 12. Some of them have edible 



seeds Aizoon L. 



Stamens 8 — 10, rarely more, but then ovary 2-celled and styles 2. Ovules 

 I or 2 in each cell 17 



17. Stamens 10 or more. Ovary 2-celled. Styles .?. Ovules basal. Stem 



glabrous. — Species 4. South Africa. . . Acrosanthes Eckl. & Zeyli. 

 Stameas 8, rarely 10, but then ovary 3 — 5 -celled, styles 3 — 5, and stem 

 hairy or warty. Ovules pendulous, i in each cell. — Species 20. South 

 Africa to Angola Galenia L. 



18. (II.) Petals (or petaloid staminodes) numerous. Stamens numerous. 



Ovary 4 — 20-celled, with many basal or parietal ovules. Fruit a 

 capsule. — Species 330. Some of them have edible fruits or seeds or 

 serve as vegetables, as ornamental or medicinal plants, or lor making 



soda Mesembrianthemum L. 



Petals (or petaloid staminodes) none. Ovary 2 — 8-celled with one pen- 

 dulous ovule in each cell, or ovary i-celled. Fruit a nut or drupe. 

 Leaves alternate. ^9 



19. Ovary i-celled. Styles 4, two of them shorter than the others and without 



a stigma. — Species i. South-west Africa (Namaland). 



Anisostigma Schinz 

 Ovary 2 — 8-, very rarely i -celled. Styles as many as ovary-cells. — Species 

 35. Southern and Central Africa. One species (J. expansa Murr., New 

 Zealand spinach) is cultivated as a vegetable in various regions. 



Tetragonia L. 

 SUBORDER PORTULACINEAE 



FAMILY 73. PORTULACACEAE 



Herbs or undershrubs, rarely shrubs. Flowers regular or nearly so, her- 

 maphrodite. Sepals 2, free or united at the base, imbricate in the bud. Petals 

 4 — 6, free or united at the base, falling oi^ very early. Stamens as many as 

 and opposite the petals, or fewer, or more numerous. Ovary usually superior 

 and I-celled. Ovules basal or afhxed to a free central placenta, curved, the 

 micropyle lateral or inferior. Style 2--8-cleft or parted, rarely {Pnrtnlaca) 

 undivided. Fruit a capsule or a nut. Seeds albuminous ; embryo more or 

 less curved. — Genera 6, species 35, (Plate 44.) 



1. Ovary inferior or half-inferior. Ovules numerous. Frui' dehiscing by a 



lid. — Species 12. Some are used as vegetables, fodder-, medicinal, or 

 ornamental plants. " Purslane.'" [Tribe PORTULACEAE.] 



Portulaca L. 



Ovary superior. Fruit dehiscing by valves or indehiscent. [Tribe CAL- 



ANDRINIEAE.] 2 



2. Ovary 2-celled with 2 ovules in each cell. Style-branches 2. Stamens 



numerous. Shrubs. — Species 2. Madagascar. Talinella Bnill. 



Ovarj- I-celled with I, 3, or many ovules. Style-branches 3. ... 3 



