﻿564 Nash : Revision of Triplasis 



tory one to determine properly, its scales necessarily being abnor- 

 mal. The whole plant has a very odd look, the inflorescence ap- 

 pearing to be a long narrow panicle. A more careful examination, 

 however, reveals the cause of this unique inflorescence in the 

 breaking away of the upper sheaths, thus exposing the secondary 

 and usually concealed panicles, which are present in the late stage 

 of the species of this genus. This is clearly indicated by the swol- 

 len pubescent nodes which occur throughout its length. So far 

 as can be judged from the imperfect condition of the plant, the 

 type specimen, as indicated previously, appears to be but a form of 

 T. purpurea, and, for the present at least, its disposition under this 

 species seems to us best. Good specimens may be secured later, 

 and then a correct valuation can be placed upon it. The specimen 



was collected on the " Sea beach at Punta Rosa, Florida, October, 



1875." 



2. Triplasis intermedia sp. nov. 



Culms densely tufted, 4-8 dm. tall, slender, smooth, more or 

 less hirsute below with appressed or ascending hairs, simple or at 

 length somewhat branched at the lower nodes ; nodes numerous, 

 densely and conspicuously upwardly barbed with silvery hairs : 

 leaves numerous ; sheaths from one half to three quarters as long 

 as the internodes, very rough, papillose-hirsute towards the base 

 with long ascending hairs ; ligule a dense ring of hairs 1 mm. or 

 less long ; blades erect or ascending, 1 3 cm. or less long, the up- 

 permost one reduced to a mere point, involute when dry, very- 

 rough on both surfaces and on the margins, hirsute above and 

 sometimes also sparingly below, scantily papillose-ciliate with very- 

 long hairs : panicle at length exserted, the branches in i's-3's, 

 usually in pairs, finally widely spreading, pubescent at the base, 

 rough, the longer ones 2-4 cm. long and more or less divided : 

 spikelets on short pubescent pedicels, 8-10 mm. long, usually 

 purplish : scales 5 or 6, the sixth when present empty ; outer 2 

 empty scales acuminate, rough on the keel, about equal in length, 

 or the first considerably shorter than the second, which is 4-4. 5 

 mm. ong ; flowering scales divided from one quarter to one third 

 their length, the lobes acute to somewhat obtuse, the callus subu- 

 late about one half as long as the rachilla internodes, the hairs 

 on the lateral nerves about .5 mm. long, much longer than those 

 on the midnerve, the awn 2.5-3 mm. long, straight, much exceed- 

 ing the scale, the lowest scale about 4.5 mm. long, 1.5 mm. wide; 

 palet about three quarters as long as the scale : stamens purple, 

 1.75-2 mm. long. 



