HITCHCOCK GRASSES OF CUBA. 209 



Blades much elongated, mostly 30 to 40 cm. long, 

 nearly glabrous; spikelets about 2.5 mm. long 3. aS. leucocoma. 



Blades shorter, mostly 10 to 20 cm. long, woolly- villous; 

 spikelets about 2 mm. long 6. S. villosa. 



1. Syntherisma digitata (Sw.) Hitchc. Contr. Nat. Herb. 12: 142. 1908. 

 Milium digitatum Sw. Prod. 24. 1788. 



Digitaria setosa Desv.; Hamilt. Prod. Fl. Ind. Occ. 6. 1825. 



Syntherisma setosa Nash, Bull. Torr. Club 25: 300. 1898. 



Wright 764 in part; Herradura, Tracy 9049, Hitchcock in 1906; Isle of Pines, Cur im in 

 1904 in Herb. N. Y. Bot. Gard. 



In the Grisebach Herbarium are two Wright specimens, no. 177 of 1865, "Bushy 

 savannas, Hanabana, May 29," and no. 764 from eastern Cuba, 1856-57. Wright's 764 

 from eastern Cuba in 1856-57 in the Gray Herbarium is a mixture of S. digitata and S. 

 sanguinalis; no. 764 of 1865 is the latter species only. 



2. Syntherisma filiformis (L.) Nash, Bull. Torr. Club 22: 420. 1895. 

 Panicum filiforme L. Sp. PI. 57. 1753. 



Panicum curvinerve Hack. Oesterr. Bot. Zeitschr. 51: 335. 1901. 



Wright 1544 in part. 



The specimen of Wright's 1544 in the National Herbarium labeled, "Sandy pine 

 woods, Pinar del Rio, Sept., " is partly this and partly S. leucocoma Nash. Hackel « 

 bases his P. curvinerve upon this portion of Wright 1544. The characters which he 

 mentions, such as the smooth glumes with incurving nerves, are found not infrequently 

 among specimens of S. filiformis from the northern United States, whence the type 

 was collected by Kalm. In the specimen of 1544 in the National Herbarium (the 

 smaller portion with spikelets only 1.5 mm. long) part of the panicles have nearly 

 glabrous spikelets, and part have long-pubescent spikelets. This differs distinctly 

 from the other part of Wright 1544, which Hackel may have taken for the true 

 S. filiformis. The amount of pubescence upon the spikelet is quite variable in this 

 species as in others of this genus. The size of the spikelets, however, is fairly constant. 

 In the Grisebach Herbarium there are two specimens of this from eastern Cuba, one 

 collected in 1859 numbered 1544, the other in 1860 numbered "107=1544." 



3. Syntherisma leucocoma Nash, Bull. Torr. Club 25: 295. 1898. 



Sandy pine woods in large tufts, Pinar del Rio, September, Wright 1544, in part; 

 Herradura, Hitchcock in 1906. 



Spikelets 2.5 mm. long; plants mostly glabrous or nearly so, tall, with elongated 

 narrow blades and slender erect racemes as much as 25 cm. long. 



4. Syntherisma sanguinalis (L.) Dulac, Fl. Haut. Pyr. 77. 1867. 

 Panicum sanguinale L. Sp. PI. 57. 1753. 



Asperella digitaria Lam. Tabl. Encycl. 1: 167. 1791. 



La Ferminst, June 17, Wright 3883; Wright 764 in part; Habana, Curtiss 655, Hitch- 

 cock in 1906, Leon 301, 304; Santiago de las Vegas, Hitchcock in 1906, Baker HC 501; 

 Puentes Grandes, Leon 279; Guanabacoa, Hitchcock in 1906; Batabano, Hitchcock in 

 1906; Cienfuegos, Pringle 46 in the Gray Herbarium; Guines, Leon 304. The following 

 are in the herbarium of the New York Botanical Garden: Santiago de Cuba, Taylor 

 50; Isle of Pines, Curtiss in 1904; Rincon, Britton 6c TFi'Zson 485; Matanzas, Britton 

 & Shafer 333; Bayamese, Eggers 4690. 



The sheet of 764 in the National Herbarium, like that in the Sauvalle Herbarium, 

 consists of a mixture of this species and S. digitata. In the latter herbarium this num- 

 ber has two labels, one "Savannas, S. Cristobal, Aug.," the other "Sandy pine 

 woods, Pinar del Rio, Sept." No. 764 in the National Herbarium has the label, 



a Loc. cit. 

 61170— VOL 12, PT 6— 09 3 



