17 



12. CladiuM, p. Browne ; Crantz, Inst. 1 : 362. 1766. 

 Type species, Cladium jamaicense, Crantz. 



I. CLADIUM JAMAICENSE, Crantz, Inst. 1 : 362. 1766. 

 Cladiiim occidentale, R. & S. Syst. I : 284. 1817. 

 Common in coastal marshes. Ferry River (Harris 8632). Common 

 in marshes throughout the West Indies and the southern United 

 States. 



Cladium Mariscus (L.) R. Br., of Europe, is in my opinion specifi- 

 cally distinct. 



13. SCLERIA, Berg. Vet. Acad. Handl XXVI : 142. 1765. 

 Type species, Scleria Flagellum nigrorum, Berg. 



A. Hypogynium present 



a. Margin of the hypogynium neither ciliate nor fimbriate 



Ligule large, its margins scarious I. 5. reflexa 



Ligule short, ovate 



Culm spreading, branched 2. 5. secans 



Culm erect 



Panicle reddish-purple ; achene 



purple or purplish 3. S. melaleuca 



Panicle brown-green ; achene 



white or whitish 4. S. pterota 



b. Margin of the hypogynium ciliate, ciliolate or fimbriate 



Achene 2 mm. long or less 5- 5- niicrocarpa 



Achene 2.5-3 mm. long 



Margin of the hypogynium finely 



ciliolate or nearly eciliate 6. 5. cubensis 



Margin of the hypogynium densely 



long-ciliate 7. 5. Grisebachii 



B. Hypogynium wanting 



Inflorescence glomerate-spicate 8. S. hirtella 



Inflorescence of several loose elongated 



clusters 9. S. lithosperma 



1. Scleria reflexa, H. B. K. Nov. Gen. & Sp. 1 : 232. 1815, 

 Climbing or trailing. Hope (Harris 7084) ; Port Antonio (Fred- 

 holm 3338) ; submit of Bull Head Mountain (Underwood 3378). 

 Haiti to Trinidad ; Mexico to Brazil. 



2. Scleria secans (L.) Urban, Symb. Ant. II : 169. 1900. 



Schoenus secans L. Syst. Ed. 10. 865. 1759. 



Scleria Flagellum, Sw. Prodr. 18. 1788. 



Scleria Flagellum nigrorum, Berg. Vet. Acad. HandL 



XXVI: 144- 1765. 

 Jamaica, collected by W. Wright, according to Clarke (Sloane, I: 

 pi- 77, f' l)- Northern South America. 



3. Scleria Melaleuca, Schl. & Cham. Linnaea, VI: 29. 



I83I. 



Vicinity of Troy (Maxon 2874) ; banks. Content Gap (Britton 42) ; 

 banks near Cold Harbour (Britton 882). West Indies, Central Ame- 

 rica ; Tropical South America. 



4. Scleria pterota, Presl, in Oken Isis, XXI : 268. 182&. 

 Scleria pratensis,^Q^'s>\xv"S\z.x\. Fl. Bras. II: 179. 1843.^ 



Moist banks and thickets and along streams, frequent at middle 

 elevations. Near Gordon Town (Britton 8) ; near St. Paul (Marble 

 701) ; Troy (Britton 453) ; summit of Bull Head Mountain .(Under- 

 wood 3409). Widely distributed in Tropical America. 



