HITCHCOCK AND CHASE — GRASSES OF THE WEST INDIES. 363 



Panicle contracted, the branches ascending, spikelet-bearing from near the base ; 



spikelets hispid 1. H. hexandrus. 



Panicle open, the branches slender, spreading, naked below ; spikelets smooth or 

 sometimes sparsely hispid. 



Spikelets 2 mm. long; blades about 5 mm. wide 2. H. monandrus. 



Spikelets 2.5 mm. long; blades 1 to 2 cm. wide 3. H. grandiflorus. 



1. Homalocenchrus hexandrus (Swartz) Kuntze, Rev. Gen. PI. 2: 777. 1891. 

 Leersia hexandra Swartz, Prodr. Veg. Ind. Occ. 21. 1788. 



Oryza hexandra Doell in Mart. Fl. Bras. 2 2 : 10. 1871. 



A scabrous aquatic perennial, the slender culms often 2 meters tall, erect 

 from a creeping base, the flat blades mostly 15 to 20 cm. long and about 8 mm. 

 wide, the many-flowered panicle pale or purplish. Extensively creeping stolons 

 with short blades are sometimes produced in land bordering ponds and ditches. 



Swamps, and ditches, southern United States to South America. Originally 

 described from Jamaica. 



Cuba, Jamaica, Santo Domingo, Porto Rico, Martinique, and Trinidad. 



2. Homalocenchrus monandrus (Swartz) Kuntze, Rev. Gen. PI. 2: 777. 1891. 

 Leersia monandra Swartz, Prodr. Veg. Ind. Occ. 21. 1788. 



Paspalum cubense Spreng. Neu. Entd. 3: 12. 1822. 



Leersia aspera Nees ; Trin. Mem. Acad. St. P6tersb. VI. Sci. Nat. 3*: 168. 1849, 

 as synonym of Leersia monandra. 



Oryza monandra Doell in Mart. Fl. Bras. 2 2 : 9. 1871. 



A densely tufted erect perennial with wiry culms and long linear scabrous, 

 often grayish blades, the few very slender remote panicle branches spreading at 

 maturity, bearing small pale suborbicular imbricate spikelets at the ends. 



Rocky woods, southern Florida to Brazil. Originally described from Jamaica. 

 Paspalum cubense was described from Cuba and neighboring islands. In Cuba 

 called " hierba de venado " and " guinea cimarrona." 



Cuba, Jamaica, Haiti, Santo Domingo, and Porto Rico (in the drier hills 

 along the south coast). 



3. Homalocenchrus grandiflorus (Doell) Hitchc. Contr. U. S. Nat. Herb. 17: 



273. 1913. 



Oryza monandra grandi flora Doell in Mart. Fl. Bras. 2 2 : 9. 1871. 



Like the preceding in habit but much larger and stouter, the blades 1 to 2 cm. 

 wide, the panicle branches commonly 15 cm. long. 



Shady bank, Veracruz to South America ; also in the Lesser Antilles. Origi- 

 nally described from Brazil. m 



Guadeloupe (Duss 3146) and Martinique (Duss 775). 



60. REYNAUDIA Kunth. 



Spikelets perfect; glumes strongly nerved, awned from between the lobes of 

 the notched summit; lemma awn-tipped from the bilobed apex. 



1. Reynaudia filiformis Kunth, Rev. Gram. 1: 195. 1829. . ,s /f%~^- ''^^J 



Polypogon filiformis Spreng. ;< Kunth, loc. cit. as synonym. JE " ,L Jo*** 4 ^ 



Polypogon cubensis A. Rich, in Sagra, Hist. Cuba 11: 313. 1850. 



A tufted glabrous perennial with erect or ascending subfiliform culms 15 to 

 40 cm. tall, bearded nodes, short involute blades mostly clustered at the base, 

 and small rather densely flowered panicles. 



Savannas and moist places, western Cuba, Jamaica, and Hispaniola. Origi- 

 nally described from Santo Domingo. Polypogon cubensis was described from 

 Cuba. 



