162 GRAJUNEAE 



Grifliths 6645, 6649; Madera Co., Coiigdon; Hockett Meadow, Hitchcock 3468; Farewell Gap, 

 Pxtrpus 5151 ; Wliitney Meadows, Coville 4' Funston 1676. In Nevada at Glenbrook, Lake 

 Tahoe (Hitchcocl- 3198, 3205). In Oregon iu the Crater Lake region (CoviUe cj- Leiherg 392, 

 Coville 1458, Hitchcoclc 3044, 3059). 



6. G. data llitche. n. t-onib. Culms erect, smooth, succulent, 3 to 6 feet high ; 

 sheaths scabrous; blades flat, usually -3 to 5 lines or sometimes only 2 lines 

 wide, scabrous; panicle large and diffuse, becoming oblong, 6 to 12 inches 

 long, the branches naked below, the lower usually rettexed at maturity; spike- 

 lets 1 Vs ^o 2VL> lines long, oblong or ovate-oblong, usually ti to 8-flowered ; 

 glumes broad, obtuse, much shorter than the lower lemmas, nerveless, the tirst 

 about Vl' I'lie long; lemmas firm, obovoid, obtuse or acutish, prominently 7- 

 nerved. — This may be only a form of Q. nervata Willd., but the California 

 specimens dittVr from the eastern and northern representatives of that species 

 in being taller and more succulent, and in having wider blades, more oblong 

 panicle with the lower branches often reflexed. and larger spikelets. 



"Wet meadoAvs, springs, and shady moist soil in woods, in the Coast Ranges 

 to the Bay region, in the Sierra Nevada, and the high sotitliern mountains; 

 north to British Columbia and east to Idaho. 



Eefs. — Glyceria elata Hitchc. Paiiicvlaria elata Nash, in Eydb. Mem. N. Y. Bot. Gard. 

 1; ."54. 1900. P. nervata data Piper, Contr. Nat. Herb. 11: 140. 1906. Glyceria nervata 

 [TrMi. niisnpiilied by] Thurb. in Wats. Bot. Cal. 2: 307. ISSO. 



60. PUCCINELLIA Pari. 

 Spikelets several-flowered, terete, in open or narrow panicles. Glumes un- 

 equal, short. Lemmas rounded on the back, obtuse, firm, obscurely nerved. 

 Perennial grasses with pale spikelets; growing along the seacoast or in alka- 

 line soil, differing from Panicularia chiefly in the obscurely nerved lemmas. — 

 Species 1-1. in northern extratropical regions of l)oth hemispheres. (Prof. Bene- 

 detto Puccinelli. an Italian botanist.) 

 Panicle open, the branches spreading. 



Leaves mostly in a short radical cluster; panicle usually less than 4 inches long 



1. P. lemmotii. 



Leaves scattered; panicle usually more than 4 inches long 2. P. nuttalliana. 



Panicle narrow, the branches ascending or appressed. 



Panicle branches long, ascending; plant stout. 1^4 to 2 feet high 3. P. fcstucacforinis. 



Panicle strict, the branches short and api)ressed ; plants lower. 



Blades involute: culms about 1 foot high 4. P. angiistata. 



Blades flat, soft and lax ; eulm.^ 3 to S inches high 5. P. simplex. 



1. P. lemmoni Scribn. Culms slender, 6 to 15 inches high; blades short, 

 filiform, mostly basal, smooth, involute ; panicle 2 to 4 inches long, becoming 

 open, the branches spreading; spikelets 2% to 3 lines long; glumes 1-nerved, 

 1 and 114 lines long; lemmas IV2 lines long, smooth. 



Alkaline soil, in the northern Sierra Nevada (Sierra Valley. Bolandcr). 

 Nevada to Assiniboia. 



Refs. — PucciXELLlA LEMMuxi Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 17: 276. f. 572. 

 1899. Poa lemmoni Vasey, Bot. Gaz. 3: 13. 1878, type from Sierra Co., Lemmon. This and 

 several other species are included under Atropis distans by Thurber (Wats. Bot. Cal. 2: 

 308. 1S80). 



2. P. nuttalliana Hitchc. n. comb. Culms tufted, erect, 1Y» to 2 feet high; 

 sheaths and involute blades smooth; panicle open, 6 to 8 inches long, the 

 branches spreading, naked below; spikelets terete, about 3 lines long, usually 

 pale ; glumes acutish, the first 1-nerved. i/^ line long, the second 3-nerved. 1 line 

 long: lemmas about li/i; linos long, sparsely pubescent at base. 



