Gymnostichum. GRAMINEJll. 327 



in pairs, 3 - scveral-flnwarod : f^liiincs liiicar-lanccolato, 3 - 5 iiorved, pointed or short- 

 awiicd : lower palet 5-iiP.rved and rougli aliovc, with an awn about unco and a half 

 its own length. — E. glaucns, Biickl. in Proc. Phil. Acad. 18G2, 99. 



San Francisco, Ukiali, and elsewliore {Bohnuirr) ; Oicp;on {Hourll, Hall and othrrs) ; eastward 

 to Ivakc Superior. Presents a great variety in size of loliage and spike ; the spike generally more 

 or less curved and soft to the toueli, sometimes strict and rougli. 



4. E. Canadensis, Linn. Culms stout, 3 to 4 feet hi-h, and witli flat rathor 

 rough soniotimes glaucous leaves: spike 6 to 9 inches long, nodding above, ratbiT 

 loose ; spikelets mostly in pairs, 3 - fj-llowereil : glumes subulate, about a line wide 

 at base, 3- or unequally 4-nerved, tajjering into an awn somewhat shorter than itself: 

 lower [)alet roughdiairy, Avith a longer awn, which is usually spreading. 



Oregon {Pickering, Ifowrll), eastward to New England ; also New Mexico and 'i'exas. A 

 showy species, especially its glaucous lorni, var. glaucijolius, which is cultivated for ornament. 



* * * Glitm.es very lonq^ usiiallij 2-partcd to the base, the divisions unequally 2- 

 cle.ft and long-awncd : lower j^t let lonrj-aicned and 2-toothed, or 3-awned. — 

 SlTANlON, (fSitanion, Paf.) 



5. E. Sitanion, Schult. Culms densely tufted, from 4 inches to 2 feet high : 

 leaves and sheaths varying from smooth and glaucous to roughly hirsute ; leaves 

 mostly flat, sctaceously jiungent at ape.x, the upper one an incii or two long, its 

 sheath loose or often inflated and including the base of the spike, which is 1 to 6 

 inches long and soon breaking into joints ; spikelets mostly in pairs, 1 -5-flowered : 

 glumes sometimes entire, mostly 2-parted to the base, the divisions unequally 2-cleft 

 and terminating in awns 1 to 3 inches long ; lower palet 3 lines long, scabrous and 

 5-nerved above, its central awn equalling those of the glumes, its lateral nerves often 

 excurrent as short awns or mere teeth. — Koem. t^ Schult. Mant. ii. 42G ; Watson, 

 Bot. King Exp. 391 ; Thurber in Bot. Wilkes Kxped. 495. SItaiiion elynwides, Raf. ; 

 Torr. Pacif. K. Pep. iv. 1.17. jEyilops Ili/strix, Nutt. Gen. i. 8G. rolyantherijc 

 Ilj/strix, Nees ; Hook. «t Arn. Bot. Beechey, 404. 



Connnon fioni Oregon to San Diego, eastward to Northern Minnesota, and southward to Texas 

 and Mexico. The spikes are usually i)ale green and shining, but sometimes they are reddish ; 

 indeed each locality seems to present a form dillering in stature and smoothness, in the size and 

 color of the spikes, or in the structure of the spikelets. When the glumes are much sub- 

 divided and the divisions are straight, stilf luid sniending, or wlien they are capillary and 

 confusingly intertwisted, the plant appears very unlike an Kli/iniis. On lh(> other hand, the 

 forms in which llii^ glumes aie entire present nuthing to distinguish them fnim the genus to which 

 Mr. Watson properly restored it. In a speciuu'U c()lle(;ted in Caiilbrnia by Mr. Fitch the glumes 

 are in part suiidivided yet again and the elongated and intcrrujited spike gives it a very diHerent 

 appearance from any others. In the plant from the Hocky Mountains and eastward the tendency 

 is to have more simple and even entire glumes. Several years ago a very full set of the forms was 

 sent to the late General Munro, concerning which that eminent agrostologist wrote : " A valuable 

 howing how many species, and even genera, might be made out of this one." 



62. GYMNOSTICHUM, Schreb. Bottle-Brush Guass. 

 Inflorescence in a usually very loose spike, the spikelets 2 or 3 or solitary at each 

 joint of the rhachis, spreading horizontally or somewhat appressed. Spikelets 

 1 - 4-flowered on a very short callus-like pedicel (when solitary placed flatwise on 

 the rhachis). Glumes none, or represented by awn-like rudiments which are decidu- 

 ous. Lower palet awned at the tip, otherwise as in Ehjmus. 



A genus separated from Ehimna on account of wanting the glumes. There is one species in the 

 older States, one in New Zealand, and California adds a thinl. 



1. Gr. Californicum, P.olander. Culm stout, 4 to () feet high, with ample sca- 

 brous leaves, ^ to I inch wide; sheaths, at least the hnver, with short stilf spreading 

 hairs: spike G to 10 inches long, flexuous, interrupted below, dense above; spike- 

 lets mostly in pairs at the joints, 1 - 3-llowcred, on very brief callus-like pedicels. 



