the name Pycreits polystachyus, var. laxiflora, Ridley ; moist ground, 

 Troy (Britton 663). Warm and tropical America. 



5. Cyperus COMPRESSUS, L. Sp. PI. 46- 1753- 



Jamaica (Sloane, pi. 76 f. I, cited by Linnaeus ; Purdie). This com- 

 mon weed of nearly all warm and tropical countries does not ap- 

 pear to be abundant in Jamaica, as it is not represented in the her- 

 barium of the Department of Public Gardens and Plantations. 



6. Cyperus sphacelatus, Rottb. Descr. et Ic. 26. 1773. 

 Jamaica, collected by several botanists as recorded by Grisebach 

 and by Clarke (J. P. 853). Common in most parts of Tropical 

 America. 



7. Cyperus trichodes, Griseb. Fl. Br. W.I. 564. 1864. 

 Marshes at lower elevations ; apparently local. Near Balaclava 

 (Marble 706.) Endemic. 



8. Cyperus distans, L. f. Suppl. 103. 1781. 



Frequent in wet or moist soil at middle elevations. Banks, Con- 

 tent Gap (Britton 39). Previously accredited to Jamaica by Swartz. 

 Widely distributed in warm and tropical regions. 



9. Cyperus Haspan, L. Sp. PI. 45- 1753- 



Marshes and wet meadows, collected by Alexander and by Wulls- 

 chlaegel. Widely distributed in warm and tropical regions. 



10. CYPERUS OXYLEPIS, Nees ; Steud. Syn. PI. Cyp. 25. 



1855. 

 Collected in Jamaica by Alexander as recorded by Clarke. Nor- 

 thern South America. 



11. Cyperus elegans, L. Sp. PI. 45. 1753. 



Cyperus viscosus, Sw. Prodr. 20. 1 788. 

 Occasional in marshes at low elevations. Also on Cayman Brae 

 (Millspaugh 1 171). Common throughout the West Indies ; Central 

 America to Argentina. 



12. Cyperus diffusus, Vahl, Enum. II : 321. 1806. 



Cyperus laxus, Griseb. Fl. Br. W. I. 563. 1864. Not 



Lam. 

 Frequent on moist banks and hillsides up to 500 m. Near Gordon 

 Town (Britton 3) ; near Castleton (Underwood 1 13). Widely dis- 

 tributed in tropical regions, but not known from the northern West 

 Indies. 



13. Cyperus ochraceus, Vahl, Enum. II : 325. 1806. 



Frequent in marshes and ditches at elevations up to 500 m. Port 

 Antonio (Britton 858) ; near St. Paul, Cockpit Country (Marble 700) : 

 Mona Estate near Hope (Harris 8846 ; 8942). Widely distributed 

 in Tropical America. 



14. Cyperus vegetus, Willd. Sp. PI. I: 283. 1797. 

 Along a brook, Troy (Britton 460). Not otherwise known from the 

 West Indies. Distribution : California to Chili. 



15. Cyperus surinamensis, Rottb. Descr. et Ic. 35. 1773. 



This widely distributed Tropical American sedge is known to me 

 from Jamaica only by a specimen collected by Hart, mixed with 

 C. ochraceus , as recorded by Clarke. 



16. Cyperus rotundus, L. Sp. PI. 45. 1753- 



A weed in waste places and cultivated soil. Widely distributed 

 in warm and tropical regions. 



17. Cyperus articulatus, L. Sp. PI. 44. 1753- 

 Common in marshes at lower altitudes. Near Ferry River (Britton 

 392) ; Resource (Harris 6917). Widely distributed in tropical re- 

 gions. 



