I From ihe Kri.i.Ei in oh the Tukkky Botanical Club, 42: 487-517. 6 N 1915.] 



1. S. setacea. 



2. S. laciislris. 



Studies of West Indian plants — ^Vll 



Nathaniel Lord Britton 



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. 



I. 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. S. catalinae. 



5. 5. melaleuca. 



6. 5. pterota. 



7. S. Wrightiana. 



8. S. setuloso-ciliata, 



9. 5. scindens. 



10. 5. ciliata. 



