MARCH, 1900. PLANTVE UTOWAN^E MILLSPAUGH. 25 



PANICUM DIVARICATUM Linn. Sp. PI. Ed. 2: 86. 



Mountain woods high above Charlotte Amalia, St. Thomas (519). 

 Environs of San Domingo City (842). Low scrub land bordering the 

 Bay of Santiago de Cuba (1015). Fields on upper plateau north side 

 of Cayman Brae (1172). South shore of Cayman Brae on low land near 

 the sea (1226), and low land at Pedernales Point, Isle of Pines (1422). 



PANICUM DIVARICATUM LATIFOLIUM (L.) Fourni Mex. PI. 2: 33. 



P. latifolitim Linn. With the previous species in St. Thomas 

 (520). 



PANICUM INSULARE (L.) Mey. Fl. Esseq. 60. 



Andropogon insulare Linn. Shores of the bay at Charlotte Amalia, 

 St. Thomas (368, 385), and hills high above the city (539). Plateau 

 on north side of Cayman Brae (1153), where it is known as "Bitter 

 Grass." On the rocky plain south of the lagoon near Progreso, Yuca- 

 tan (1681). 



PANICUM MAXIMUM Jacq. Ic. Rar. i: t. 13. 



Dry creek bed near Charlotte Amalia, St. Thomas (454). 



PANICUM PROLIFERUM Lam. Encyc. 4: 747a. 



Old fallow field near Hamilton, Bermuda (126). 



PANICUM PROSTRATUM Lam. Tabl. Ency. i: 171. 



An infrequent closely prostrate species found along a path about 

 a mile north of Guanica, Porto Rico (454). 



Panicum Utowanseum Scribn. Sp. nov. Plate Ivii. 



A slender, glabrous and stoloniferous perennial, 2.5-5 dm. high, 

 with narrow, elongated leaves and simple, contracted panicles 6-12 

 cm. long, sheaths compressed, those at the base strongly so, ligule a 

 short ring of stiff hairs, leaves erect or spreading, 10-20 cm. long, 1-3 

 mm. wide, scabrous above and on the margins, very acute tapering, 

 and becoming nearly involute towards the base, much narrower than 

 the sheath; branchlets of the panicle more or less remote, 1-3 cm. 

 long, appressed, spikelets glabrous, broadly lanceolate or oblong, 

 subacflte, 2 mm. long, subtended by an awnlike bristle (a continua- 

 tion of the branchlet) which is minutely scabrous, somewhat flexuous 

 and about 4 mm. long; first glume 3-nerved, obtuse one-third to nearly 

 one-half as long as the second, clasping at the base, the second glume 

 obtuse, two-thirds as long as the spikelet, 5-nerved, the third glume 

 oblong-obtuse, 5-nerved, equaling or slightly exceeding the fourth 

 glume and furnished with a hyaline palea about one-half its own 

 length; fourth glume smooth and slightly beaked or curved at the 

 acute apex. 



No. 702, from a dry hillside near Guanica, Porto Rico, Jan. 22, 

 1899. Type in Field Col. Mus. Herb. No. 60702. 



Related to Panicum Reverchoni Vasey, but much more slender and 

 at once distinguished by its smaller spikelets and stoloniferous habit. 



SYNTHERISMA SANGUINALIS (L.) Dulac. PI. Haut. Pyren. 



Panicum sanguinale Linn. Railroad embankment near Bayamon 



