48 POACEAE. 



62. PANICULARIA Fabr. MANNA-GRASS, REED MEADOW-GRASS. 



Spikelets ovate or oblong, 6 mm. or less long. 



Flowering glumes slightly if at all scarious and entire at the apex. 

 Spikelets 3 mm. long or less ; branches of the panicle drooping. 



1. P. nervata. 

 Spikelets 4-6 mm. long ; branches of the panicle ascending or spreading. 



2. P. americana. 

 Flowering glumes with broad, dentate, scarious margins. 



Spikelets 4-6-flowered. 3. P. pauciflora. 



Spikelets 2-3-flowered. 4. P. Holmii. 



Spikelets linear, 12 mm. or more long. 5. P. borealis. 



1. Panicularia nervata (Willd.) Kuntze. (Glyceria nervata Trin.) In 

 wet meadows and swamps from Lab. to B. C, Fla. and Calif.; also in Mex. 

 Alt. 4000-9000 ft. Manitou; Crystal Park; mountains of Larimer Co.; 

 Democrat Mountain; near Pagosa Peak; Pagosa Springs; Dome Rock Val- 

 ley ; Placer, Costilla Co. ; Bosworth's ranch ; Happy Hollow ; Pagosa Springs. 



2. Panicularia americana (Torr.) MacM. (G. aquatica Coult. ; not Smith) 

 In swamps and along streams from N. B. to Alaska, Tenn. and Nev. Alt. 

 4000-8500 ft. Mancos; mountains, Larimer Co.; Denver; Fort Collins; 

 Pleasant Grove; New Windsor, Weld Co.; Saguache Creek; LaVeta; Bax- 

 ter's ranch; canon west of Palmers Lake; Table Rock; Bosworth's ranch, 

 Stove Prairie; Pagosa Peak. 



3. Panicularia pauciflora (Presl) Kuntze. (G. paucifiora Presl.) In wet 

 meadows from Mont, to B. C., Colo, and Calif. Alt. 9000-10,500 ft Bob 

 Creek, west of Mt. Hesperus; near Pagosa Peak; Chester; near Chambers' 

 Lake; east slope of Rabbit-Ear Range; mountains northeast of Dolores; 

 Pagosa Peak. 



4. Panicularia Holmii Beal. Dense thickets in Colo. Alt. about 8500 ft 

 Lamb's ranch, Long's Peak (Beal). 



5. Panicularia borealis Nash. In shallow water from Me. to Alaska, N. 

 Y., Colo, and Calif. Alt. 5000-8500 ft. Cerro Summit; Buffalo Pass Road, 

 Routt Co. ; Boulder. 



63. PUCCINELLIA Parl. MEADOW-GRASS. 



i. Puccinellia airoides (Nutt.) Wats. & Coult. (Glyceria distans Coult; 

 in part) In wet meadows, especially in alkaline soil, from Man. to Macken- 

 zie River, B. C., Kans. and Nev. Alt. 4000-11,000 ft. Buena Vista; lola; 

 Gunnison; Fort Collins; South Park; Durango; Alpine Tunnel; Saguache 

 Creek; Doyle's; Georgetown; Colorado Springs; Walsenburg; Boulder; 

 Longmont. 



64. FESTUCA L. FESCUE-GRASS. 



Empty glumes firm, the second 3-5-nerved. 

 Annuals or biennials ; stamens 1-2. 



Spikelets 7-i2-flowered; awn not much exceeding the flowering glume in 



length, often much shorter. i. F. octoflora. 



Spikelets i-7-flowered; awn much longer than the body of the flowering 



glume. 2. F. nticrostachys. 



Perennials; stamens 3. 



