156 CONTRIBUTIONS PROM Till NATIONAL HERBARIUM. 



Eh ■■,.! II Br. Prod. PI. Nov. Boll. 225. L810, not R, Br. op. cit 224. 



EUogemu capUatut Nee* Linnaea 9: 294. L834. 



Distribi n«>\: Warmer regions ol both hemispheres, common. 



< 081 \ lvi< w « "i 1 1 i u«.\- Talamanca, altitude mm> meters, Tondui 9216 

 6. Rleocharis nodulosa Schult. in Roem. A Bchult. Syst. Mant. 2. B7. 1824. 

 put nodulotut Roth, No> PI 8p [nd. Or. 29. 1821. 



Eleogenut nodulotut Nees in Man. PI. Bras. 2 : 104. L842 



Distribi n«>\; Prom MisBouri to Texas and Uruguay, very common. 



ha Rican collections Hoffmann 624; [Toruftuj 8845; El Tablaso, altitude 

 1 BOO meters, FotMau 7916, 7917. 

 :. Eleocharis acicularis R. Br. Prod. Fl. Nov. Roll. 224. 1810. 



§ i acieularit L. Sp. PI. 1 : 18. 17 



Chaetocyperut polymorpkut Neee, Linnaea 9: 289. 1834, in part. 



Distribi pion In tropical and warm temperate regions of l><»iii old World and 

 \ ery common. 



1 osTA Ri< \\ « "i 1 1 < noNs: Poas, altitude 2,500 meters, Pittier 2978, Tondui io7«;ii, 

 L0764. 



B. Eleochaiis chaetaria" Roem. & Schult. Syst. 2: L54. L817. 

 ! Spreng. Syst 1: 203. L825 



Cyperut tetaceut Retz. Obs. 6: 10. 1 77«>— 91. 



Eleocharit tetaeea R. Br. Prod. Fl. Nov. Soil. 224. L810, not R. Br. op. rit. 2 



Chaetocyperut niveut Liebm. Dansk. Vid. Selskr. Skr. 2: 54. 1849. 



Chaetocyperut rugulotut Nees, BonplandiaS: 86. L855. 



EeUocharit trifiora Boeckl. Flora 68: 437. 1880. 



Distribution: In all tropical and temperate parte of the world, very common. 

 \ Rican collections: Polakowshy 404; Tree Rios, Pittier 4338; La Palma, 

 altitude 1,500 meters, Pittier 311, 676, 7Wuz 12646; Turrialba, altitude 500 metered 

 Tondm 8265; Rio Tufe, altitude 600 meters, 7o/,r/,/ ; 8184, L1253; Golfode Osa, Ton- 

 1938; Buenos Aires, Pitti«r 3586, r©n<*u«4889; E] Rodeo de Paquita, altitude 900 

 meters, Tonduz L619. 

 9. Eleocharis minima Ku nth. Enum. 2: 139. lN. -, »7. 



Chaetoqjperut urceolatut Liebm. Dansk. Vid. Selsk. Skr. 2: 55. 1S49. 



Distribi tion: Florida and Mexico to Rio de Janeiro. 



Costa Rican collection: Canas Gordas, altitude 1,100 meters, Pittier L0951. 

 1<). Eleocharis durandii P.oe.kl. Allgem. Bot. Zeitschr. 2: 34. L896. 



Tufted, Btems L0 to 30 cm. long, slender, sharply quadrangular; spikelet -I to 7 mm. 

 long, ellipsoidal, obtuse, dense; style 3-fid; bristles 6, about equaling the nut, white; 

 nut small, trigonous, smooth, white, not much narrowed at summit, Bubtruncate, 

 style base pyramidal, tawny. Rhizome none (or according to Boeckeler occasion- 

 ally long and slender . Stems strict; sheath firm at summit, on one side produced 

 lanceolately. Bristles retrorsely scabrous. Style short, its branches 3, long. As t«> 

 its nut and bristles, altogether recalling E. microcarpa Ton-.: the species differs from 

 that, perhaps noi sufficiently, by its rather more robust stem-. 



i osi \ Rn \n collections: Buenos Aires, altitude 300 meters, Tondui 4887. 

 11. Eleocharis sulcata Nees, Linnaea 9: 'I'M. L834. 



- irput tuleatut Roth, Nov. PI. Sp. End. Or. 30. L821. 



Fimbrittylit sulcata Roem. & Schult. Syst. Mam. 2: 52. L824. 



Scirpidium sulcatum Nees in Man. Fl. Bras. 2 1 : 98. 1843. 





" The elder specific name setacea is available for ihi> plant. Robert Brown refer 

 Cyperut tetaceut of Retzius and Willdenow to this genus, but fails to form the bino 

 mial. — Editor. 



