212 



POACEAE 



2. Panicularia davyi Merr. 

 Davy's Manna-grass. Fig. 492. 



Glyccria leptostachva Buckl. Proc. Acad. Phila. 1862: 95. 



"1863. 

 Panicularia daTvi Merr. Rhodora 4: 145. 1902. 

 Panicularia leptostacliva Piper; Piper & Beattie, Fl. Northw. 

 Coast 59. 1915, not Maclosk. 1904. 



Culms 1-1.5 meters tall; sheaths smooth; blades 

 minutely and sparsely scabrous above, about 4 mm. 

 wide ; panicle long and narrow ; spikelets 12-18 mm. 

 long, about 1.5 mm. wide; lemmas oblong, truncate, 

 inore or less purple-tinged, about 3 mm. long, 

 prominently 7-nerved, distinctly scabrous on and be- 

 tween the nerves. 



In shallow water, in the Transition Zone; Washington to 

 central California (Guerneville, Da'.'v : Sonoma. Heller"!. 

 May-Tnlv. T\\>e locality: Guerneville, California. 



3. Panicularia fluitans (L.) Kuntze. 

 Water Manna-grass. Fig. 493. 



Fcstuca fluitans L. Sp. PI. 1: 75. 1753. 



Glyceria fluitans R. Br. Prodr. Fl. Nov. Holl. 1: 1/9. 1810. 



Panicularia fluitans Kuntze, Rev. Gen. PI. 2: 782. 1891. 



Culms ascending from a decuml)ent rooting base, 

 rather thick and succulent, 1-1.5 meters tall; sheaths 

 smooth; blades 3-10 mm. wide, scabrous above; 

 panicle long and narrow ; glumes very unequal, ob- 

 tuse, the second 3 mm. long; lemmas purple-tinged, 

 broad, obtuse, 5 mm. long, prominently 7-nerved, with 

 an additional short pair near the margin, very sca- 

 brous on the nerves and somewhat so between them ; 

 palea about as long as lemma. 



In shallow water, in Transition Zone; northern parts of 

 Eurasia and America; British Columbia to Mendocino County, 

 California. June-Aug. Type locality, European. 



4. Panicularia pauciflora (Presll Kuntze. 

 Few-flowered Manna-grass. Fig. 494. 



GIvccria pauciflora Presl, Rel. Haenk. 1: 257. 1_830. 

 Panicularia pauciflora Kuntze, Rev. Gen. PI. 2: 783. 1891. 

 Panicularia holmii Beal, Torreya 1: 43. 1901_. 

 Panicularia multifolia Elmer, Bot. Gaz. 36: 54. 1903. 

 Panicularia flaccida Elmer, Bot. Gaz. 36: 55. 1903. 

 Glyceria erecta Hitchc. in Jepson, Fl. Calif. 1: 161. 1912. 

 Panicularia erecta Hitchc. Am. Journ. Bot. 2: 309. 1915. 



Culms 30-120 cm. tall, from a decumbent rooting 

 liase, with creeping rhizomes: sheaths smooth or 

 scabrous ; blades scattered, 4-12 mm. wide, sca- 

 l)rous; panicle pyramidal, nodding, 10-20 cm. long, 

 open, the branches spreading, naked below, rather 

 densely flowered toward the ends; spikelets about 

 4 mm. long, oblong, about 5-flowered ; glumes short, 

 l)road, obtuse, 1-1.5 mm. long; lemmas 2 mm. long, 

 oblong, rounded and somewhat erose at summit, 

 prominently 5-nerved, very scabrous on the nerves 

 and somewhat so between. 



Swamps, shallow water, and wet meadows, in the Tran- 

 sition Zone; Montana to Colorado, west to Alaska and central 

 California. June-Aug. Type locality: Nootka Sound. 



The form described as Panicularia erecta has short culms, narrow blades, and narrow panicles with 

 ascending branches. Springy places in mountain meadows in the Sierra Nevada to southern Oregon. Tyjie 

 locality : Sunrise Creek, Yosemite National Park. 



