382 Nash : Enumeration of the 



the writer, and that it is what is commonly known as Panicinn 

 fasciculatuiii Sw. 



10. Panicum prostratum Lam. III. i: 171. 1791. 

 Cane field between Ponce and Coamo, Heller 497. 



11. Panicum MOLLE Sw. Prod. 22. 1788. 



Along railroad, Bayamon, Heller 100; Yauco, Heller 6293. 



12. Panicum laxum Sw. Prod. 23. 1788. 



In fields, common. Between Aibonito and Cayey, Heller 

 522; Santurce, Heller 983 ; Cataiio, Heller 1378. 



13. Panicum latifolium L. Sp. PI. 58. 1753. 



In woods and thickets, common. Maricao, Sintenis 215; 

 Mayaguez, Heller 4375 ; Arecibo, Heller 343 ; Luquillo Mts., 

 Wilson 350; Coamo, Goll 699; Bayamon, Goll 227. 



14. Panicum Sintenisii sp. nov. 



A tufted glabrous perennial with long narrow flat leaf-blades 

 and a slender panicle. Stem 4-6 dm. tall, slender, producing 

 panicle-bearing branches from the upper sheaths : leaves about 4 ; 

 sheaths several times shorter than the internodes and the blades ; 

 ligule a ring of short hairs ; blades narrow and elongated, flat toward 

 the apex, but folded below for a considerable distance, at least when 

 dry, giving the blade a long-stalked appearance, 1-2 dm. long 

 and about 2 mm. wide at the flat portion, the lower folded portion 

 about one quarter this width, long-acuminate : panicle very slender, 

 4-7 cm. long, its branches appressed, 1-2 cm. long, each running out 

 into a bristle-like termination as do its divisions : spikelets about 

 2 mm. long, acute, as are also all the scales, the first scale i-ner\'ed, 

 about one half as long as the spikelet, the second one 3-nerved, 

 about two thirds as long as the spikelet, the third scale 5-nerved 

 and equalling the fourth scale or a little shorter than it, the fourth 

 scale very acute. 



In woods, Guanica, Sintenis 3463. 



Related to P. Cliapmani Vasey, but that has stouter spikelets 

 and all the scales with more nerves. 



15. Panicum flavescens Sw. Prod. 23. 1788. 

 Near Mayaguez, Heller 4373 and 4488. 



