308 CiKAMhNl'LK. Hbjnnia. 



ohlong, 5 - T-flowcreil, 1 or 2 lines long, sometimes purplish : llorets al)out a lino 

 long, closely imliricuted, early caducous : lower palet prominently 7-uerved, line- 

 scabrous, strongly convex near the truncate-obtuse apex ; upper palet aimut as long 

 as the other, minutely 2-toothed at apex, the margins broail and int'olded. — Foa 

 nervata, WilM. P. striata, Michx. Briza Canadensis, Nutt. (Jen. i. G9, not of 

 .Suppl. G. Michauxii, Kunth. 



In Mendocino County and in the Sierra Nevada {Bolandcr, n. 2256, 3908) ; Big Tree Grove 

 (Hi/lcbrand) ; Oregon, etc. Found in moist meadows and alo\ig water-courses from tlie extreme 

 cast westward. .Souietinies called " Fowl Meadow-Grass," a name which sliould not be used for 

 tills grass, as it i>roiierly belongs to Pou scroliaa. It is regarded as a valuable coniiioneut of moist 

 jiasturcs. 



3. Gr. pauciflora, Presl. Culms 1 to 3\ feet high from a creeping root, smooth : 

 leaves 3 to 1'2 inches long, 3 to G lines wide, acute, scabrous on the nuirgiu ; ligule 

 about 3 lines long, rounded, obtuse, but soon lacerate ; sheaths sidit, slightly longer 

 than the internodes : panicle G to 8 inches long, loose, its capillary branches in threes 

 below, in pairs above, Hower-bearing from near the middle; spilcelets 2 to 2,V lines 

 long, 4 - G-llowered : lower glume acute, 1-nerved ; ujjper rounded, 3-nerved, less 

 than half as long as its lloret : lower palet ratlier more tlian a line long, i)rominently 

 5-nerved, scabrous, truncate-obtuse at the scarious tip, which is serrulate; or distinctly 

 toothed, more or less pur[)lish. — Rel. Ihenk. i. 257; ^\''atson, IJot. King Kxpi;d. 

 384. G. microt/u'ca and G. Icptostac/ii/a, IJucldey, Troc. I'hilad. Acad. 18G2, \)5, UG. 



From San Francisco (liolandcr) to Wasliington Territory and Vancouver Island, and in tiie 

 llocky J^lountains southward to Utah and Coloiado. 



49. ATROPIS, Rupr. 



Panicle contracted, at least with age. Spikelets few -many-flowered. Glumes 

 3-nerved, or the lower irregularly so or 1-nerved, nnich shorter than the lower florets. 

 Lower palet chartaccous or membranaceous, rarely herbaceous, convex or flattish on 

 the back, sometimes partially keeled, faintly 5-nerved, all but the midnerve vanish- 

 ing at some distance below the broadly scarious and mostly obtuse often mucronu- 

 late or denticulate apex. Upper palet with converging ciliolate nerves and a 

 2-toothed or bifid apex. Stamens 3. Scales ovate, toothed on the outer margin. 

 Styles short, the subsessile stigmas with simple hairs. Grain free, obscurely grooved. 

 — Griseb. Fl. Ross. iv. 388. Sderochloa, IJeauv. Poa § Alropis, Trin. Gh/ceria 

 § lleleocldoa, Flies. Glyceria § Sderochloa, Hook. f. 



A small genus of jtercnuials and ainiuals, diilcring from Paa e.s]iccially in the rounded lower 

 ]ialet, and from (/li/ccrin in the h.'ss prouiiiientiy nerved Iowcm- palit and tlie siuiiile hairs of its 

 nearly sessile stigma. One of our sjiccics is usually (always f) dincious. 



1. A. distans, Griseb. Culms tufted from a perennial root, ^ to 2 feet high : 

 leaves short and narrow, mostly convolute and with the sheaths mostly glaucous and 

 smooth, save a very minute roughness near the apex ; ligule oblong, distin(-t : pani- 

 cle very variable, erect, narrow and one-sided, sjireading or with age even refracted, 

 its rays in lives or fewer; spikelets 3 to G lines long, 3- 12-llowered ; llorets mostly 

 somewhat distant : glumes much shorter than their Ihirets, from narrow and acute to 

 broad and obtuse, sometimes irregularly ciliate above, 3-nerved or the lower l-m-rved : 

 lower palet oblong-linear, 1 to l.V lines long, minutely pubescent at base, the lateral 

 nerves one-fourth shorter, apex truncate, erose-toothed or subacute. — Ledeb. Fl. 

 Ross. iv. 388. A. maritima, A. avc/ustata, and probably also A. convoluta. and 

 A. tenuijlora, (Jiiseb. 1. c. Poa airoides, Nutt. P. Nuttalliana, Scliult. P. Knt- 

 kaensis, Presl. Glyceria distans, maritima and festnca'formis, Keichenb. Tcon. Fl. 

 Germ. t. 151, 152. G. amjustata and G. airoides, Thurb. Bot. Wilkes ICxp. 4i)(i, 

 491. G. montana, iJuckl. 



