312 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Pine land, Cuba (Province of Pinar del Rio and Isle of Pines), Brazil, and 

 Paraguay. Originally described from Brazil. This is the species listed as 

 P. Uneare Trin. by Hitchcock. 1 That is a coarser plant with larger spikelets, 

 not known from the West Indies. 



21. Paspalum leptocaulon Nash, N. Amer. Fl. 17: 181. 1912? 



Plants in large dense tussocks, the very slender elongate blades and culms 

 reclining, commonly 50 cm. long, sometimes longer, thy solitary slender arcuate 

 racemes 3 to 8 cm. long, the solitary glabrous ovate spikelets about 1.6 mm. 

 long, the glume and sterile lemma scarcely or not at all inflated. 



Open grass land in the Greater Antilles. Described from Lacovia, Jamaica, 

 Britton 1475 being the type. 



Cuba, Santo Domingo, and western Jamaica. 



22. Paspalum filiforme Swartz, Prodr. Veg. Ind. Occ. 22. 1788. 

 Paspalum swartzianum Flugge, Monogr. Pasp. 96. 1810. 



Paspalum Uneare Swartz; Steud. Nom. Bot. ed. 2. 2: 272. 1841, as synonym of 

 P. swartzianum. 



Stouter than the preceding, the blades thicker, lunate in cross section ; spike- 

 lets 2 mm. long, the glume and sterile lemma loose, wrinkled, the glume much 

 inflated at maturity, the spikelets irregularly rhombic. 



Open mostly dry or sterile slopes, Cuba and Jamaica. Originally described 

 from Jamaica. Sometimes called " wiregrass." 



23. Paspalum lindenianum A. Rich, in Sagra, Hist. Cuba 11: 299. 1850. 

 Paspalum longifolium Steud. Syn. PI. Glum. 1 : 21. 1854, not Roxb. 1820. 

 Paspalum megaphyllum Steud. Syn. PI. Glum. 1 : 464. 1854. 



Stouter and on the average taller than nos. 21 and 22, the blades commonly 

 equaling the long curved raceme; spikelets 3 mm. long, the glume and sterile 

 lemma loose and wrinkled as in P. filiforme, pointed beyond the fruit. 



Open slopes and rocky or dry savannas, Cuba and Jamaica. Described from 

 Cuba, Linden 1813 being the type of P. lindenianum and of P. longifolium, 

 P. megaphyllum being a change of name for the latter. 



24. Paspalum nanum Wright ; Griseb. Cat. PI. Cub. 230. 1866. 

 Paspalum caudicatum Wright, Anal. Acad. Cienc. Habana 8: 205. 1871. 

 Tufted, erect, the sheaths and blades villous, the blades flat, 8 to 14 cm. 



long, 2.5 to 5 mm. wide, much shorter than the long slender culms ; raceme 

 4 to 6 cm. long, the spikelets about 2.5 mm. long, the glume and sterile lemma 

 loose and wrinkled. 



Sandy savannas, central and western Cuba. The type locality of P. nanum 

 is Hanabana and of P. caudicatum, Vuelta Abaja. ^-' 



25. Paspalum alterniflorum A. Rich, in Sagra, Hist. Cuba 11: 299. 1850. 

 Paspalum doUchophyllum Hack. Inf. Est. Centr. Agron. Cuba 1 : 409. 1906. 

 Densely tufted, erect, commonly 30 to 60 cm., sometimes 1 meter, tall ; sheaths 



rather loose; blades involute, flexuous, mostly overtopping the erect, usually 

 solitary racemes ; spikelets narrowly ovate, about 2.5 mm. long, the glume and 

 sterile lemma villous toward the base, equal, exceeding the fruit. 



Moist savannas, central and western Cuba, whence originally described; 

 the type of P. doUchophyllum also from Cuba, Baker & Zarragoitia 4545. 



26. Paspalum rottboellioides Wright, Anal. Acad. Cienc. Habana 8: 204. 1871. 

 Culms tufted, slender, erect, 30 to 60 cm. tall ; leaves mostly clustered at the 



base, the pilose linear blades about 2 mm. wide; racemes 1 or 2, 6 to 8 cm. 



■ x Contr. U. S. Nat. Herb. 12: 203. 1909. 



