120 22. RESTIONACEAE — 23. MAYACACliAE 



2. Spikelcts, all or most of them, bisexual, containing a male and a female 



flower, arranged in spikes. Styles 2. — Species i. South Africa. 



Phyllocomos Mast. 

 Spikelets unisexual. 3 



3. Female spikelets i -flowered. Styles or stigmas 2 4 



Female spikelets 2 — many-flowered, very rarely i -flowered, but then stigmas 



3 6 



4. Glumes distant. Male spikelets in panicles, female in spikes. — ■ Species 



10. South Africa (Cape Colony). (Including Ceratocaryum Nees) 



Willdenowia Thunb. 

 Glumes closely imbricate 5 



5. Female flowers on a thick stalk. Style i, with 2 stigmas. Fruits more 



or less distinctly stalked. — Species 15. South Africa (Cape Colony). 



Hypodiscus Nees 



Female flowers on a thin stalk or sessile. Styles 2. Fruits sessile. — 



Species 20. South Africa to Nyasaland Hypolaena R. Br. 



6. Outer perianth-segments of the female flowers winged on the keel. 7 

 Outer perianth-segments not winged. Styles 2—3 8 



7. Style I. Female spikelets in spikes. — Species 15. South Africa (Cape 



Colony) Thamnochortus Berg 



Styles 2 — 3. Female spikelets solitary or in fascicles. — Species 5. South 

 Africa (Cape Colony). (Under Thamnochortus Berg) Staberoha Kunth 



8. Female spikelets solitary or in clusters of 2- — -3 on the top of the stem, 



2 — 5-flowered. Outer perianth-segments larger than the inner. Styles 



2. — Species 8. South Africa (Cape Colony). Cannomois Beauv. 



Female spikelets in spikes or panicles. Outer perianth-segments as large 



as or smaller than the inner, more rarely larger, but then styles 3. . g 



9. Leaf-sheaths persistent. Styles 3. — Species 15. South Africa. 



Leptocarpus R. Br. 



Leaf-sheaths deciduous, more rarely persistent, but then styles 2. — Species 



30. South Africa. (Including Lamprocaulos Mast.) . , Elegia L. 



10. (i.) Leaf-sheaths persistent. — Species 100. South Africa. (Plate 13.) RestioL. 

 Leaf-sheaths, at least the upper ones, deciduous. Spikelets few-flowered. 11 



11. Ovary and fruit 2-celled. Female spikelets in short spikes. — Species i. 



South Africa (Cape Colony) Askidiosperma Steud. 



Ovary and fruit 3-celled. — Species 15. South Africa. . . Dovea Kunth 



FAMILY 23. MAYACACEAE 



Herbs. Leaves alternate, linear, 2-toothed at the apex. Flowers in axillary, 

 2 — 3-flowered umbels, regular, hermaphrodite. Perianth consisting of 3 

 imbricate sepals and 3 imbricate petals. Stamens 3. Anthers opening by a 

 terminal pore. Ovary superior, i-celled, with 3 parietal placentas. Ovules 

 numerous, straight. Style and stigma simple. Fruit capsular. Embryo at 

 the apex of the mealy albumen. 



Genus i, species i. Southern West Africa (Angola). . . . Mayaca Aubl. 



