From the Biim.biin of the Tukkby Botanical Club, 42: 487-517. 6 N 1915.] 



Studies of West Indian plants 



Nathaniel Lord Britton 



1. S. setacea. 



2. 5. lacustris. 



39. THE GENUS SCLERIA Berg. IN CUBA 



The last previous treatment of the Cuban species is that of 

 Mr. C. B. Clarke in Urban, Symb. Ant. 2: 8-169. 1900. 



A. Hypogynium present. 



1. Hypogynium not covered with a white rough crust. 

 a. Margin of the hypogynium neither ciliate nor fim- 

 briate [see S. cubensis]. 

 * Roots fibrous; rootstocks none or very short. 

 Achene reticulated or irregularly ridged; 



plants slender. 

 Achene smooth; plants stout. 

 ** Perennials, with rootstocks. [Rootstock in S. 

 setuloso-ciliata short, or perhaps none.] 

 Achene smooth. 



Ligule large, its margin scarious or callous. 



Climbing; branched; pilose. 



Erect; simple; glabrous. 



Ligule short, small ; culms erect or spreading. 



Culms slender; leaves relatively smooth. 



Panicle red-purple; achene purple to 



white. 

 Panicle brown-green; achene white. 

 Achene depressed-globose. 

 Achene longer than thick. 

 Leaves 2-4 mm. wide. 

 Leaves 8-15 mm. wide. 

 Culms stout; leaves very rough. 

 Achene verrucose, reticulated or papillose. 

 Achene papillose. 



487 



3. 5. secans. 



4. 5. calalinac. 



5. 5. -Melaleuca. 



6. S. pterota. 



7. 5. Wrightiana. 



8. 5. setuloso-ciliata. 



9. 5. sciiidcus. 



10. S. ciliata. 



