﻿Nash : Revision of Triplasis 563 



Flowering scale one fifth as broad as long, its lobes acuminate, pointed, the awn longer 



than the scale, 6 mm. or more in length, recurved, at least when dry. 



3. T. Americana. 



i. Triplasis purpurea (Walt.) Chapm. Fl. South. U. S. 



560. i860. 



Air a purpurea Walt. Fl. Car. 78. 1788. 



Uralep 



1818. 



Diplocea barbata Raf. Am. Journ. Sci. I : 253. 1 8 18. 



spis purpurea N. Gray, Man. 589. 1848. 



Merisachne Drm 

 Triplasis sparsifii 



855 



1884. [2d 



Culms 2-8 dm. tall, usually less than 6 dm., simple or finally 

 slightly branched, the lower internodes roughened with a minute 

 pubescence, at least below the nodes, and also occasionally spar- 

 ingly hirsute ; nodes numerous, densely upwardly barbed with 

 silky hairs : leaves numerous ; sheaths shorter than the internodes, 

 rough, the lower ones sometimes papillose -hirsute at the base ; 

 ligule 'a dense ring of hairs less than 1 mm. long ; blades erect or 

 ascending, flat, or involute when dry, less than 1 5 cm. long, 1-3 



mm 



111111. iv'uv., iv^u^i. -v^n .^~- 7 i*. . , . 



ingly hirsute, the uppermost leaf reduced to a point : panicle at 

 length exserted, the axis smooth and glabrous, the roughened 

 branches in i's or 2's, finally widely spreading, 4 cm. or less long, 

 the lower ones usually divided : spikelets on short hispidulous 

 pedicels, usually purple : scales 4 or 5 ; outer empty 2 acuminate, 

 the first about two thirds as long as the second, which is 3-4 mm. 

 long ; flowering scales divided about one quarter way down, the 

 lobes rounded or truncate at the irregularly and minutely toothed 

 apex, the awn equalling or a little exceeding the lobes, pilose on 

 the lower half, less than 2 mm. long, the lowest scale about 4 mm. 

 long, 1.75 mm. wide when spread out : palet shorter than the 

 scale : grain about 2 mm. long. 



In sandy soil, usually along the coast, Ontaria to Florida, west 



Misso 



braska southward. 



The T. sparsiflora of Chapman appears to us to be but a (o 

 of this species. Mr. C. D. Beadle, Curator of the Biltmore H. 

 barium, kindly sent us for examination the type specimen, 

 proves to be a smut-infested plant and therefore a very unsatisfac- 



It 



