348 



Type collected by Dr. John K. Small at Darien Junction, Mc- 

 intosh Co., Ga., June 25-27, 1895. It is related to P. Iciicothnx 

 Nash, in habit, but the longer and more robust culms, the sheaths 

 which are longer in proportion to the internodes and much less 

 hirsute or glabrous, and the larger panicle and spikelets make 

 manifest its specific validity. 



I would also refer to this species the grass collected by Mr. A. 

 H. Curtiss, near Jacksonville, Fla., on May 4, 1893, No. 4033, and 

 distributed as P. nitidiim Lam. The panicle and spikelets are 

 somewhat smaller, but in other respects it agrees. 



Panicularia borealis n. sp. 



Plant glabrous throughout. Culms 6-1 5 dm. tali, from a 

 creeping base, smooth, erect ; sheaths loosely embracing the culm, 

 over-lapping, smooth or roughish, the terminal one often embrac- 

 ing the base of the panicle; ligule 5-15 mm. long; leaves 9-23 

 cm. long, 2-IO mm. wide, erect, rather abruptly acuminate, rough 

 on both surfaces toward the apex, the upper surface also often 

 rough throughout, the smaller leaves usually conduplicate, at least 

 when dry; panicle, sometimes nearly simple, 1.5-5 d"''- long, its 

 main axis smooth, with the lowest internode 6-1 1 cm. long, 

 branches erect, smooth, single, or in 2's or 3's,the lower bearing 3-12 

 spikelets 4-15 cm. long; spikelets 10-17 mm. long, 7-13-flowered, 

 appressed, on pedicels shorter than themselves, the empty scales 

 with a broad scarious margin, [-nerved, smooth and shining, the 

 first acute or obtuse, one-half as long as the second, which is ob- 

 tuse and erose at the apex and one-half to two-thirds as long as 

 the first flowering scale, flowering scales 3.5-4 mm. long, about 

 three times as long as the internodes of the rachilla, thin, a broad 

 scarious margin at the obtuse and erose apex, 7-nerved, the nerves 

 hispidulous, palets hyaline, slightly shorter than the scales, nar- 

 rowly elliptic, shortly 2-toothed at the obtuse apex, 2-nerved, the 

 nerves green and narrowly winged, the wings serrulate ; stamens 

 about I mm. long. 



In water or wet places from Maine to the Catskill Mts., N. Y., 

 Idaho, California and Washington, and northward. 



The smaller spikelets with thin flowering scales, which are 

 hispidulous on the nerves only, clearly separate this from P. 

 fluitaiis (L.) Kuntze, in which the flowering scales are hispidulous 

 all over the back, and of much firmer texture. 



I would refer to this the following specimens : 



Fernald, Van Buren, Me., July 25, 1893, No. 193. 



Nash, Cairo, N. Y., July 10, 1893. 



