. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 266 GRAMINEAE. Vol. 9. Panicularia borealis Nash. Northern Manna-grass. Fig. 640. Glyceric, fluitans var. angustata Vasey, Proc. Port. Soc. Nat. Hist, 2: 91. 1895. Not G. angustata T. Fries, 1869. P. borealis Nash, Bull. Torr. Club, 24: 348. 1897. Glyceria borealis Batch. Proc. Manch. Inst. 1: 74. 1900. Glabrous. Culms erect from a creeping base, i£°-5°tall
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 266 GRAMINEAE. Vol. 9. Panicularia borealis Nash. Northern Manna-grass. Fig. 640. Glyceric, fluitans var. angustata Vasey, Proc. Port. Soc. Nat. Hist, 2: 91. 1895. Not G. angustata T. Fries, 1869. P. borealis Nash, Bull. Torr. Club, 24: 348. 1897. Glyceria borealis Batch. Proc. Manch. Inst. 1: 74. 1900. Glabrous. Culms erect from a creeping base, i£°-5°tall; sheaths overlapping, smooth or rough- ish, the uppermost one enclosing the base of the1 panicle; ligule 2.\"-7\" long, membranous; blades linear, abruptly acuminate, 3i'-2i' long, i"-5" wide; panicle slender, narrow, the exserted por- tion 6'-2o' long, its branches appressed or nearly so, the lower in 2's of 3's, the longer of which bear 5-12 spikelets; spikelets 5"-o" long, 7-13- flowered, appressed; outer two scales empty, i-nerved, smooth and shining, unequal; flower- ing scales' thin, 2"-2$" long, 7-nerved, the nerves hispidulous, a broad scarious margin at the obtuse and erose apex; palet hyaline, shortly 2-toothed at the obtuse apex. In shallow water, Newfoundland to Alaska, south to New York, Minnesota, Iowa and Oregon, and in the mountains to Colorado. June-Aug. 10. Panicularia fluitans (L.) Kuntze. Float- ing Manna-grass. Sweet-grass. Fig. 641. Festuca fluitans L. Sp. PI. 75. 1753. Glyceria fluitans R. Br. Prod. 1: 179. 1810. P. fluitans Kuntze, Rev. Gen. 782. 1891. P. brachyphylla Nash, Bull. Torr. Club 24: 349. 1897. Culms ,erect from a creeping base, 2°-3° tall; sheaths generally longer than the internodes, almost closed, the uppermost one enclosing the base of the panicle; blades linear, acuminate, 2i'-s' long, 2"-2$" wide; panicle slender, its branches appressed or nearly so, the lower in 2's or 3's, the lon
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