3^88 Nash : Enumeration of the 



34. PHRAGMITES Trin. Fund. Agrost. 134. 1820 



I. Phragmites occidentalis (Sieb.) Trin.; Steud. Nomen. Ed. 

 2, 2 : 324. 1841. 



Arundo occidentalis Sieb.; Schult. Mant. 2 : 289. 1824. 



Near Guanica, Heller 6289. This specimen is doubtfully re- 

 ferred here, its immaturity preventing a more definite determination. 

 It was distributed as Ariindo Donax ; it hardly appears to be that 

 plant, however. It may only be a form of the world-wide P. 

 Phragmites. Mature flowering specimens of this are greatly desired. 



35. ERAGROSTIS Beauv. Agrost. 70,//. 14., f. 11. 1812 



Flowers perfect : stems not rooting at the lower nodes. 



Palet long-ciliate on the margins : panicle narrow and spike-like. 



1. E. ciliaris. 

 Palet not long ciliate : panicle loose and open. 



Annual : leaf-blades less than I dm. long. 2. E. Purshii. 



Perennial : leaf-blades more than i dm. long. 3. E. ElHottii. 



Flowers dioecious : stems creeping. 4. E. hypnoides. 



1. Eragrostis CILIARIS (L.) Link, Hort. Berol. i: 192. 1827. 

 Poa ciliaris L. Syst. Ed. 10, 875. 1759. 



In waste and cultivated soil, common. Bayamon, Heller loi ; 

 Santurce, Heller 156 and 6404 ; Cabo Rojo, Sintenis 838 ; Baya- 

 mon, Underwood and Griggs 895 ; Ponce, Heller 6218. 



2. Eragrostis Purshii Schrad; Shlecht. Linnaea, 12 : 45 I. 1838. 



Rio Piedras, Heller 197 ; between Aibonito and Cayey, Hel- 

 ler 551 ; Montellano, Goll 473; Adjuntas road, near Ponce, 

 Heller 6198. These specimens are doubtfully referred here. 



3. Eragrostis Elliottii S. Wats. Proc. Am. Acad. 25: 140. 



1890. 

 Poa nitida Ell. Bot. S. C. & Ga. i : 162. 18 17. Not Lam. 

 1791. 



Eragrostis nitida Chapm. Fl. S. U. S. 564. 1 860. 

 Moist sandy soil, Santurce, Heller 584. 



4. Eragrostis hypnoides (Lam.) B.S.P. Prel. Cat. N. Y. 69. 



1888. 

 Poa Jiypnoides Lam. 111. 185. 1791- 

 Roadsides, Rio Piedras, Heller, 649 ; Bayamon, Sintenis 1225. 



