580 



Nash : The dichotomous Panicums 



branches 2.5-3.5 cm. long: spikdets obovate, 3 mm. lon^j and 

 about i.s mm wide, the first scale a little more than one half as 

 long as the spikelct, broadly ovate, clasping at the base. 3-ncrvcd~ 



bescent 



.th rather long spreadmg hairs, ii -nerved, the second distinctly 

 shorter than tlie tlurd and the fourth, the fourth scale yclloulsh- 

 vvhite, oval, 2.5 mm. long and about 1.3 mm. wide. 



Collected by the u ritcr in the high pine land at Eustis, Lake Co 

 Florida, May 3, 1S94, no. 603. Most nearly related to P mahi 

 con, but distinguished by the less copious pubescence which is 

 much finer and softer, and by the glabrous upper surface of the 

 blades. From P. cilUfemm it is at once separated by its narrower 

 blades which are not ciliate on the mar^rins 



m trifolium 



A much tufted perennial, glabrous, with the exceptions noted 

 below. Culms slender. 2-4 dm. tall, finally a little branched : 

 ^ayes usually 3, rarely 4, the uppermost one much above the 

 middle of the culm and generally but a little below the panicle • 

 sheaths less than one half as long as the internodes. sometime^ 

 but one quarter as long : hgule a dense ring of hairs about 0.4 mm 

 long ; blades erect or nearly so, firm, lanceolate, often minutely 

 pubescent on the lower surface, the margins thickened and carti^ 

 lagmous. .serrulate and very rough. 1.5-6 cm. long, r.5-5 mm 

 wide, the basal ones numerous, 4-6 cm. long: panicle moi^ or less 

 ex.serted. broadly ovate, 2.5-6 cm. long, its branches ascending 

 the larger ones 15-3 cm. long: spikclets 1.5 mm. long and about 

 O.; muL wide, elliptic, the first scale nearly orbicular, glabrous 

 I -nerved, one quarter to one third as lon^ as the soikelet the 

 second and third scales densely pubescent^vith short' preadn^ 

 ha.rs 7-neryed, the fourth scale white, 1.3 mm. long and abou^ 

 0.6 mm. wide, obtusely and obscurely apiculate. 



In sandy soil, North Carolina to northern Florida, west to 



Mississippi. 



gee Ivivcr Swamp, below Macon, Georgia, May 1 8-24. 1895. The 

 following specimens are also referred here : 



North Carolina: Chapel Hill, W. TF. ^.-//^ (distributed as 



P. ciisifoluiiii). 



r 



South Carolina : 



//. 



Florida: Chapman, 1890, no. 3; Apalachicola, 



(^lo. J^ascy. 



Dr. 



