I08 17. CYPERACEAE 



18. Perianth-bristles 3. Glumes 4 — 5. Style with a thickened, persistent 



base. Spikelets in spikes or solitary. — Species 3. South Africa. 



{Ecklonea Steud.) Trianoptiles Fenzl 



Perianth-bristles 6. Glumes numerous. Style slightly thickened. Spike- 

 lets in panicles. — Species 2. Madagascar and neighbouring islands, 

 (Under Schoemts L.) Cyclocampe Steud. 



19. Style-branches i — 2. Perianth of 6 or more bristles or wanting. — Species 



15. [Rynchospora Vahl) Rhynchospora Vahl 



Style-branches 3 20 



20. Perianth of 3 — 6 bristles 21 



Perianth none 22 



21. Perianth of 3 bristles. Upper leaves with red sheaths. — Species i. South 



Africa. [Decalepis Boeck., under Tetraria Beauv.) Boeckeleria Dur. 



Perianth of 5 — 6 bristles. Lowest flower male. — Species 6. Madagascar 



and South Africa Costularia C. B. Clarke 



22. Partial inflorescences arranged in a panicle. — Species 5. Cladium R. Br. 

 Partial inflorescences arranged in a head 23 



23. Involucre of the inflorescence short. Stem leafless. — Species i. Mada- 



gascar and neighbouring islands. {Arthrostylis Boeck.) 



Actinoschoenus Benth. 



Involucre of the inflorescence long. Stem leafy. — Species i. West Africa 



and Madagascar. Used medicinally Remirea Aubl. 



24. (13.) Bracteolesi— 2. [Tribe HYPOLYTREAE.] 25 



Bracteoles none. [Tribe SCIRPEAE.] 28 



25. Bracteoles i — 2, parallel witli the glume (bract), i.e. placed before or behind 



or before and behind it. Stamens i — 2. [Subtribe lipocarphdjae.] 26 



Bracteoles 2, lateral to the glume, sometimes imited. Stamens 2—3. 



[Subtribe hypolytrinae.] 27 



26. Bracteole i, deciduous. Stamen i. Spikelets sohtary or in clusters of 2 — 3, 



subtended by a single invohicral bract. — Species 2. Central and South 



Africa. (Under Schpus L.) Hemicarpha Nees 



Bracteoles 2, persistent. Stamens i — 2. Spikelets in heads surrounded 

 by several involucral bracts. — Species 10. Tropical and South Africa. 

 {Hypaelyptmn \'ahl) Lipocarpha R. Br. 



27. Bracteoles united in front, longer than the glume. Spikelets sohtary 



or in heads. Stem leafy at the base only. — Species 9. Tropical and 



South Africa Ascolepis Nees 



Bracteoles free or united behind, as long as or shorter than the glumes. 

 Spikelets in heads or panicles. Stem leafy throughout its length. — 

 Species 10. Tropics Hypolytrum Rich. 



28. (22.) Glumes distinctly 2-ranked. Partial inflorescences usually arranged 



in heads or umbels. [Subtribe cyperinae.] 29 



Glumes not distinctly 2-ranked. Partial inflorescences usually arranged 

 in spikes or panicles. [Subtribe scirpinae.] 34 



