Grasses of Pokto Rico ;}77 



7. Paspalum orbiculatum Poir. in Lam. Encycl. 5: 32. 1804. 

 Paspaluin pusillnin Vent. ; Flueggc, Gram. Mon. 100. 18 10. 

 Wet banks, south of San Juan, Heller 664. 



8. Paspalum fimbriatu-m H.B.K. Nov. Gen. & Sp. i : 93, //. 



2S. 181 5. 



In ditch, Coamo to Ponce, Underwood and Griggs 576 ; Ponce, 

 Heller 6219. 



9. Paspalum Portoricense sp. nov. 



A low tufted nearly glabrous slender perennial. Stems about 

 I dm. tall, glabrous, with the exception of a few hairs at the nodes, 

 simple : leaves 2 or 3 ; sheaths glabrous, usually shorter than the 

 internodes and shorter than the blades ; ligule .scarious, acute, 1-2 

 mm. long ; blades ascending, flat, rather thin, the upper surface 

 with some long hairs at the very base and a few scattered ones 

 elsewhere, sparingly ciliate on the margins, the lower surface glab- 

 rous, linear, acuminate at the apex, usually more or less narrowed 

 toward the base : inflorescence very slender, about 2 cm. long, of 

 I or 2 erect branches : spikelets in pairs, one on a long and the 

 other on a short pedicel, elliptic, 1.8 mm. long and 0.7 mm. wide, 

 usually purplish tinged, glabrous, the first and second scales 

 3-nerved, the third scale greenish-white, a little shorter than the 

 outer scales, obtuse. 



Type collected between Aibonito and Cayey, February 8, 

 1899, by Heller, no. 524. 



10. Paspalum conjugatum Berg. Act. Helv. 7 : i 29. //. S. 1772' 

 Near Mayaguez, Heller 4397 ; Mayaguez to Joyua, Under- 

 wood and Griggs 175 ; Luquillo Mts., Wilson 159. 



10. ANASTROPHUS Schlecht. Hot. Zeit. 8: 681. 1850. 



I. Anastrophus compressus (Sw.) Schlecht. ; Doell. in Mart. Fl. 

 Bras. 2- : 102. 1877. 

 Miliimi coinpi'cssum Sw. Prod. 24. 1788. 

 Rio Blanco, Blauner. 



II. ISACHNE R. Br. Prod. 196. 18 10 



I. Isachne angustifolium sp. nov. 



A prostrate leafy branching perennial, forming large mats, 

 with narrow leaf-blades and rather small panicles. Stems i m. 

 long or less, glabrous or very sparingly pubescent below, the 



