Ohjctrla. GKAAIINEyE. 



307 



iKilol n)\i^'li (Jii tlio ^rcou portions, the n))pciulii<;o to tlio kopl.s with oiin i)roniiM(Mit 

 acuto tooMi and several irroj^oilar smaller onos. — Hook, tl' Arn. l!(.t. Jlccclii'y, [()'.], 

 t. 95; J5olanik'r, Trans. Calif. A<j;ric,. Soc. 1804-05, 140. Lcpitoma brevij'idia, 

 Turr. Ms., and Plenrojwgoii Douglasii, Trin. Ms. ; Stoud. Gram. 2'J2. 



Oakland, Santa Rosa Valley, Ukiali (Bolamkr, n. 1545, 6075) ; Walnut t^iwk (nrrifcr, n. 1043> 

 111 wet ineadows. Stems very weak, the folinxe, etc., pale {<iecni.sli yellow ; spikelets often niir- 

 jilish. U iicn youiif,' the ^'lunies and tips of the palets, in tlie dried jdaiit, shine with a silvery 

 lustre, addiii;,' imich to the beauty of the spceiniens. Ui: J5olaiider states that animals are very 

 fond of it, and he regards it as the only certainly indigenous grass deserving the attention of a"ri- 

 cultiirists. ° 



2. L. refracta, (hay. j\[oro robust than tlio preceding, culms 3 to 4 feet liigli : 

 lower leaves 8 to 10, tlio uppermost 1 or 2 inches long, S to 4 lines wide: axis of 

 raceme very slender ; spikelets refracted by the curving of the pedicels; 1 to 1^ inches 

 long, more loo.sely flowered than in the preceding : lower palet 4 lines long, barely 

 scabrous, more or less truncate (but not 2dol)ed) and erose-toothed at apex ; awn 

 about 3 linos long; appendage to up[)er jialet with but a single blunt tooth on each 

 side. — Proc. Amor. Acad. viii. 40U. 



Oregon, E. Ifidt. Plant much larger tlinii any form of the foregoing, with the foliage mueii 

 darker green, though the spikelets are siniihuly pale. Should be looked for in the nortirern part 

 of the State. 



48. GLYCERIA, R. Dr. Manna-Guass. 

 Panicle loose, sometimes narrow, often secund, the rays semi-verticillate. Spike- 

 lets 3 - many-llowered, terete or somewhat ilattoned, tho florets mostly early decid- 

 uous by the breaking up of the jointed rhacliis. Glumes membranaceous, persistent, 



1 - 3-nerved, unequal, unawned, shorter than the florets. Lower i)alet becoming 

 somewhat cartilaginous, rounded on the back, smooth, the 5 to 7 parallel nerves 

 not reaching tho obtuse (rarely acute) scarious and sometimes obscurely-toothed apex. 

 Upper palet about equalling the other, ciliate on the nerves, entire or bifid. Stamens 



2 or 3. Scales 2, sometimes connate, fleshy, truncate. Ovary smooth. Styles 2, 

 short, the stigmas plumose with much branched hairs. Grain oblong, smooth, in- 

 closed in the palets but free from them. — Perennial smooth marsh grasses, mostly 

 with creeping rootsto(;ks and generally with closed sheaths. 



A genus belonging mostly to temperate and eold climntcs ; the niindier of speeies estimated at 

 20. Ketained by some botanists with Poit, from which it mainly dilleis in its loiinded smootii 

 lower palet and its deciduous llorets. 



1. G. fluitans, P. Pr. CUdms 2 to 5 feet high from a widely creeping root- 

 stock, flattened : leaves often floating, 2 to 4 lines wide and with the slieaths 

 mostly smooth : panicle 1 to 2 feet long, spreading or generally the few long erect 

 r.iys racemose, with few spikelets ; spikelets ^ to 1 inch long, terete (except when 

 flowering), erect, those on the rays mostly short-i)edicelled, 7 - 20-flowered : glumes 

 green-keeled, otherwise hyaline and nerveless, the larger upper one eroded at tip, 

 more than half as long as its floret : lower palet li to 2 lines long, 7-nerved, slightly 

 scabrous, its broadly scarious subacute tip entire or obscurel}' S-lobed ; upper palet 

 2-toothed, slightly siiorter or sometimes a little longer : scales united and fleshy. — 

 Festnca Jliiitans, Linn. Foa Jiuiians, Scopoli. 



Sierra Nevada (Zc)n7;(r)«,, Mix. 11. M. Austin); Oregon {Hnll); Europe, Asia, Africa and x\us- 

 tralia. Found in shallow water in ))onds and ditches, its leaves often floating, usually very pale 

 green with the spikelets sometimes purple-tipiied. 



2. Gr. nervata, Trin. Culms 2 to 4 feet high : leaves variable, often ample, 

 sometimes 12 to 15 inches long and 4 to G lines wide, usually roughish above, as 

 are tho closed sheaths : panicle 4 to 8 inches long, its Ih'xuose capillary rays in twos 

 or threes, erect when young, soon dill'usely sjireading and pendulous ; spikelets ovate- 



