17 



18 



"Imperator brevifolia — Culms 3-4 ft. 

 high, erect from a creeping" rhizome, 

 firm, smooth; radical leaves numerous, 

 4-10 inches long 1 , plain, smooth, very- 

 acute, 4-5 lines wide, contracted and 

 long ciliate at the base, ligule short, 

 membranaceous; cauline leaves, 4 or 5, 

 short, first about 4 inches, second 3 

 inches, third 2 inches, fourth 1 inch 

 long, rather rigid, acute, with a few 

 long hairs at the base; ligule short cil- 

 iate, sheaths smooth, the upper ones 

 elongated 6-7 inches long) : panicle erect, 

 nearly cylindrical, 5-9 inches long, 

 V2~% inches wide; branches of the pan- 

 icle appressed, sparsely short-hairy 

 below, with spikelets in pairs, one ses- 

 sile, and the other pedicellate, toward 

 the apex the spikelets single; the ped- 

 icels slightly hispid, and emitting' a 

 few long silky hairs; the outer glumes 

 about 1% lines long, the upper a little 

 longer, lance-oblong, obtusish; the 

 lower five-nerved; upper 3-nerved and 

 ciliate at the apex; both villous on the 

 back with long silky hairs, which are 

 about 3 lines long; third glume smooth, 

 very thin, hyaline, about as long as 

 the first; fourth glume two-thirds as 

 long, narrow; palet bifid, broad, hya- 

 line, nerveless, % line long; stamen 

 one. Southern California, 1031 Parish; 

 New Mexico, 2001 C. Wright; also from 

 Arizona and Western Texas." — Vasey, 

 Torr cl b 13:26 (P 1886). 



Cantilles canyon, Lower California 

 (Orcutt 1137) ; Grand canyon (Tou- 

 rney) ; Resting Spring's (Coville). 



Genus KOELERIA Pers. 



KGELERIA CRIST ATA Pers. 



S D (Or 495); Sauzal, Baja (Or 1426); Ju- 

 lian. Gal. (Or 1990); Arizona (Or 2534;2474). 



Genus LAMARCKIA Moench. 



LAMARKIA AUREA Moench. 



S D Go (Palmer); C D; Baja; Texas, 

 LEPTOCHOLOA FASCICULARIS Gray. 



Ft. Yuma, Cal tp New England. 



Genus LOLIUM Linnaeus. 



LOLIUM TEMULENTUM L. 

 ' Chollas (Or 1067); widely naturalized. 

 Genus MELICA Linnaeus, 



MP LIC A FRUTESCENS- Seribn. 



San Diego; Baja; Mexico. 

 MELICA IMPERFECTA Trin. 



Baja mts (Or 1170); Guadalupe; Cruz. 

 MELICA POAEOIDEiS Nuttall. 



Baja (Or 513).' 

 MONATHOCHLOE LITTORALIS E. 



S E> (Or 512); Magdalena Isl. (Br). 

 Genus MUHLENBERGIA Trin. 



MUHLENBERGIA CALAMAGROSTID- 



EA Kth. 



So Gal; Arizona; Comondu, Baja (Br). 

 MUHLENBERGIA CALIFORNICA Va- 

 sey. 



San Bernardino (Parish). 

 MUHLENBERGIA DEBILIS Trin. 



Calmalli; Rosalia (Orcutt). 



S D (Or 496); S Bar; Baja (Or 1435). 

 MUHLENBERGIA DUMOSA Scribn. 



Southern California; Arizona; Mexico. 

 MUHLENBERGIA GRACILIS Trin. 



Mont.; Colorad/o; Arizona; California. 

 MUHLEINBERGIA MEXICANA Tri u . 



MoClatchie, Erythea 2:78. Gabriel mts. 

 MUHLENBERGIA PARISHII Vasey. 



San Bernardino, Gal. (Parish). 

 MUHLENBERGIA PUNGENS Thurb. 



Ft. Yuma, Cal. Utah; Nebraska. 

 MUNROA SQUARROSA Nuttall. 



Crypsis squarrosa Nuttall. 



British America to Mexico. 



Genus ORCUTTIA Vasey. 



"Panicle somewhat spicate, with short, 

 simple, alternate, sessile spikelets, some- 

 what distant below, and crowded toward 

 the summit: spikelets many-fl'd, com- 

 pressed: empty and fl'ng glumes much 

 alike, with many prominent straight 

 nerves, strongly toothed or lobed at the 

 apex: palet equalling its glume, narrow, 

 thin, green on the strongly angled keels: 

 anthers 3, styles 2, fil and styles project- 

 ing beyond the apex." — Vasey, bot gaz 19: 

 145. 



"Plant dwarf, 2-4 inches high, annual; 

 growing- in small clusters of 10-20 or more 

 culms from one root; culms variable in 

 length in the same cluster, generally pro- 

 ducing some small flowering branches 

 from the lower joints; leaves 2 or 3, the 

 sheaths open and inflated, striate; ligule 

 obsolete; blade rather rigid, about 1 inch 

 long, acuminate; leaves and sheaths 

 sparsely pubesrent; panicle about 1 inch 

 long, simple, usually of 4-6 alternate ses- 

 sile spikelets, the lower 2 or 3 rather dis- 

 tant, the upper ones crowded; spikelets 

 5-10 flowered, empty glumes sparsely pu- 

 bescent, broad, about 2 lines long, scari- 

 ous-margined, mostly 3 lobed, the 2 outer 

 lobes longer, the lobes each 3-nerved; 

 flowering glumes a little exceeding 2 lines 

 long, with 5 nearly equal, acute lobes, 

 each lobe 3-nerved 1 ; palet as long as its 

 glume, hyaline, narrow, strongly keeled, 

 dentate at apex. Sometimes several 

 spikelets are clustered together at the 

 apex of the culm, with only 1 pair of 

 empty glumes for all. A dwarf grass 

 collected near Quintin. by C. R. Orcutt, 

 an ardent young naturalist, for whom the 

 genus is named." — Vasey, Torr cl b 13:219 

 t 60 (N 1SS6). 

 CRYZOPSIS MEMBRANACEA Vasey. 



Stipa membranacea Pursh. 



Eriocoma cuspidata Nuttall, Gen 1:40. 



British Columbia to Baja aftd Texas. 



Genus PANICIM Linnaeus. 



PANICUM CAPILLARE L. 



Smith mt. S D Co (H. C. Orcutt); Baja. 

 PANICUM COLONUM L, 



Ft. Yuma, Cal. (Or 2367) ; Baja (Or 1309). 

 Texas. 



