62 



Materials for a Flora of the Malayan Peninsula. 



1. C. platystylis. 



C. caslaneus. 

 C. iincinatns. 



Distrih. Tropical Asia. Xalire name '" Tlumpnl 'J'aman.'"' Sandy 

 spots local Init ol'ton abundant. 



3. Cyperus, L. 



Stems erect simple leafy at tlie base only. Inflorescence um- 

 belled or capitate. Spii'celets linear or oblong compressed, racheola 

 persistent. Glumes distichous 2 lowest and uppermost 1-2 empty, the 

 rest bisexual, eventually deciduous. Stamens 3-2, rarely 1. Anther 

 linear or oblong. Nut triquetrous or plano-convex, plain face flat 

 against the racheola. Style base continuous with the nut, branches 

 3 li^iear. 



Species 300. Whole world. 



Xut with corky edges . . 

 Xut with no corky edges. 



Dwarf plant annual, glumes mucronate. 

 Glumes usually red, nut sides parallel 

 Glumes pale or brown, nut obovoid 

 Small or middle sized plants with very numer- 

 ous shoi't spikelets, umbellate. Leaves 

 nari'ow. 

 Stems acute li'iquctrous weak. T'inl)('l 



spreading 

 Stems stifi'er. Tmbel dense 

 Tall woodland plants, leaves bi'oad. 

 Umbels compound, s])ikelets green small. 

 Spikelets flat 

 Spikelets turgid 

 Stem very short umbel rays longer. 



Seashoi'c plant . . 

 Stems tall or slender, rhizome very short 

 or none. 

 Glumes very short little longer than nut 

 Glumes nuich longer than nut. 

 I»achis pilose . . 

 l>achis glal)rous. 

 Glumes silvery . . 

 Stems tall and slender, rhizome stout and 

 shoi-t. 

 Umbel simple 



Stems slender distant on a long rhizome 

 tuberous at base. 

 Und)el simple. Spikelets narrow red 



1. C. Ihispan. 



T). C. piihlirrrinius. 



6. C. diffusus. 



7. C. hnncanus. 



8. C. radiaiKs. 



0. C. Iria. 



10. C. pilosus. 



11. C. fompressus. 



12. C. Zollingcri. 



13. C. rohi)i(hts. 



