56 



Mr. Watson in the Botany of the Fortieth Parallel, Xo. 1313, but it ap- 

 pears to be wholly different from that species. It probably belongs 

 to the section SchlerocMoa. Apex, Col. (1133 and 1134.) 



P. Andina, IN'utt. Several varieties are classed under this species. 

 Some of them approach very closely to the preceding. Xorth Platte. 

 (1135.) South Park. (1136.) Branch of Green Eiver. (1137.) 



P. TENUiFOLiA, Nutt. This species is quite variable, and possibly there 

 are two species called by this name. South Park. (1138.) Twin 

 Lakes (1139 and 1110), a form with slender wiry stems, and long 

 linear panicle. Apex, Col. (1141) stouter, broader panicle, and 

 larger flowers. 



P. . _ A form of the Cccsla section, growing in dense tufts, with 



short, wiry stems j short, narrow leaves, short and narrow panicle, 

 and purple flowers. Mosquito. (1142.) South Park. (1143.) 



P. AECTICA, E. Br. Along mountain-streams, Twin Lakes (1144) ; also 

 Mosquito (1145). 



Eragrostis pilosa, Bean. Saguache Creek. (1146.) 



Festuca tenella, ^Yilkl. Denver, Col. (1147.) 



F. inCROSTACiiYS, Xutt. (?) South Park. (1148.) Awns equaling or ex- 

 ceeding the palet. 



F. oviXA, L. (1149.) IS'^ear the eastern form. 



F. ovoA, L., var. DrRirscuLA. Twin Lakes. (1150.) 



F. oviNA, L., var. TENUIFOLIA. South Park. (1151.) 



F. EREVIPOLIA, Br. (F. OYINA, var. brevifolta, Watson.) Summit 

 of Mount Lincoln: (1152.) 



F. scabrelea, Hook. (?) Twin Lakes. (1153.) 



F. Thurberi, n. sp., No. 1154. Culms erect, 1* to 2 feet high, leafv, 

 leaves exceeding the iuternodes and the upper one overtopping the 

 panicle; panicle 3 to 4 inches long, a little drooping; lower part in- 

 closed in the upper sheath; branches slender, single or in pairs, naked 

 below, erect; spikelets cylindrical, lanceolate, acute, 3-5-flowered, 

 5 to 6 lines long; glumes membranaceous, shorter than the flowers, 

 nearly equal ; lower one convex; not compressed, inner one slightly 



keeled, puri)lish, obscurely nerved ; lower palet lanceolate, acute, or 

 short cuspidate, minutely scabrous, obscurely 5-nerved, convex ; in- 

 ner palet nearly equaling the outer, narrow, slightly hispid on the 

 keels; radical leaves numerous, invohite, G to 12 inches long, rou^h 

 margined. '^ ' 



Beomus KALmi, Gr., var. (?) Twin Lakes. (1155, 1156.) 



B. ciLiATUP, Gr., var. (!) Twin Lakes. (1157.) 



B. ciLiATUS, var. Coloradensis, near Gray's Peak. (1158, 1159.) This 



has been called B. hreviarLstatus, llook., but is evidently not that 

 plant. 



Eltmus coxDEXSATUS, Presl. Grant Creek. (IIGO.) Twin Lakes. 

 E. SIT ANION, Sehultz. (Sit ANION eltmOides, Raf.) Several forms. 



Denver. (IIGI.) Twin Lakes. (1162.) South Park. (1163.) 

 HOEDEUM JUBATUM, L. Saguache, Colorado, low grounds. (1164 ) 

 H. PEATENSE, Hads. South Park. Mosquito. (1165.) 

 Teiticum REPENS, L. Twin Lakes. Mosquito. (1166.) 

 T. EEPENS, var. with awned flowers. Cottonwood Creek. (1167.) 

 T. viOLACEUM, Horn. Twin Lakes. (1168.) 

 T. CANINUM, L. Twin Lakes. (1169.) 



Danthonia SERiOEA, Nntt. Twin Lakes. (1170.) South Park. (1171), 

 with a smaller form, which is perhaps D. spicata. 



