488 



Brixton: Studies of West Indian plants 



Achene verrucose or reticulated. 



Achene reticulated; hypogynium sup- 

 porting 3 deeply 3-lobed tubercles. 

 Achene verrucose-reticulated ; hypogy- 

 nium 3-lobed. 

 Glabrous or nearly so. 

 Leaves and sheaths densely pilose- 

 pubescent. 

 b. Margin of the hypogynium ciliate, ciliolate or 

 fimbriate [nearly or quite eciliate in S. cubensis]. 

 Margin of the hypogynium ciliate or ciliolate. 

 Achene 2 mm. long or less. 

 Achene 2.5-3 mm. long. 



Style-base black, persistent; achene ellip- 

 soid. 

 Style-base pale, deciduous; achene sub- 

 globose. 

 Leaves about 3 mm. wide. 

 Leaves 8-16 mm. wide. 



Margin of the hypogynium ciliolate 



or eciliate. 

 Margin of the hypogynium densely 

 long-ciliate. 

 Margin of the hypogynium 3-lobed, the lobes 

 laciniate or fimbriate. 

 2. Hypogynium covered with a white rough crust. 

 B. Hypogynium none, or obsolete. 



Annuals with fibrous roots; inflorescence glomerate- 

 spicate. 

 Achene smooth. 



Achene verrucose, reticulated or cancellate. 

 Bracts strongly ciliate; achene cancellate. 

 Bracts glabrous; achene verrucose or verrucose- 

 reticulated. 

 Inflorescence simply glomerate-spicate. 

 Inflorescence branched. 

 Perennial by rootstocks. 



Inflorescence glomerate-spicate; achene smooth. 

 Inflorescence not glomerate-spicate. 

 Panicle loose. 

 Inflorescence subcapitate. 



Achene 2-3 mm. long, with 2 pits on each side 



of the 3-angled base. 

 Achene 4 mm. long, without pits. 



11. S. Curlissii. 



12. S. stereorrhiza. 



13. 5. pilosissima. 



14. S. microcarpa. 



15. 5. mitts. 



16. S. phylloplera. 



17. S. cubensis. 



18. S. Grisebachii. 



19. S. porphyrorrhiza. 



20. S. havanensis. 



21. S. dislans. 



22. 5. pinelorutn. 



23. S. verlicillata. 



24. 5. Liebmanni. 



25. 5. hirtella. 



26. 5. lilhosperma. 



27. 5. gracilis. 



28. 5. Baldwinii. 



I. ScLERiA SETACEA Poir. in Lam. Encycl. 7: 4. 



Scleria hemitaphra Steud. Syn. PI. Cyp. 169. 1855. 

 Scleria Torreyana Walp. Ann. 3: 696. 1853. ' -'' 



1806 



