JMPKR^MOK'ni AMKHK^AN SPECIKS OF FESTUCA. 45 



tii'ters of tuftiwl lial)it, narrow invdlnte leaves, long li^^ulo, and awn<'d lemnja. Addi- 

 tional material is neccs.-ar^^ before anv sati.sfaetorv cont'lui^ion can be reached. 

 Speeimeufc liave been examined aw followt^: 



•Nevada de Toluca, Ront^ Jc I'undi'r 798l>. 



Monnt Orizaba, Se.aion VX\, 228, 



Withont locality, Lifhmann 510, 51 1. 



Wan Luis Poto^ri^ l^nrru ({■ Palmer 924. 



Near Cima, r^o.^e c(- Pdiuirr ^rim. 



i 



Festuca rosei .^p. nov. 



Perennial, tufted; cubns Htout^ f>ver I meter liiyh, 4 or 5-jointedj smooth an<l 

 glabrous; sheaths smooth, those of the lower internode.s eqnaling or exceeding 



them; ligule short, ciliate; bUuleH of the numerous basal heaves filiform and invo- 

 lute, smooth, 30 to 40 cm. long, those of the culm stouter; panicle narrow, erect, 

 about 20 cnK long; rays in about 5 sets, solitary, luit nearly all with a short basal 

 Ijranch, somewhat scabrous on the angles; spikelets purplish, somewhat glauccnis, 

 oblong, 7 to 9 mm. long, 8 to 5-Jlowered; joints of the racliilla nearly sn^iooth, cylin- 

 dric;. glumt^s unequal, lirm in texture, scabrous on the nerve above, the lower lanceo- 

 late, 1 -nerved, 3 to 4 mm. long, the upper oblong, IVuerved, 4 to 5 mm. long; lemma 

 firm in texture, with u very narrow scarious margin, <»vatedanceolate, acuminate, 

 obscurely glaucous, 6 to 7 mm. long; [>alea lanccitlate, bidentate, scabrous on the 

 nerves, tlie inflexed sides less than half the intei*nerve. 



Type specimen collecte<l near ('ima, State of Mexico, by J. X. Rose and J, il. 

 Painter (no. 7210), Septendier 19, 1903. 



This species is readily distinguished from any ulber known to us by its very slender 

 loaves, stout cuhns, short ligules, and awuless lemmas. 



Festuca willdenowiana Schidtcs. 



Festuca viexicana WlUd.; Spreng, Syst. 1: 356. 1825. 



*'F. panicula nutante pancitlora, ramis flexuosis, spicuUs 3dioris strigoso-bispidis 

 aristatis, foliis linearibus angustissnuis. Mexico.'' 



Fesfacawilldenoiviana Srhultes, ^lant. 3: 650. 1825. Changes namo of abovis owing 

 to the older 7'V,s7aca mexicxiiKi \i, & S, Svst. 2; 732. 1817. 



Fournier, follo\ved by Ilemsley, refers to this species a speeimen collecttMl by 

 St^haffner without locahtv. 



We have seen no authentic material oi tins species, but we would refer to it with 

 little doubt the following spet:imens: >%'aion 227 B, collected on Blount Orizaba, 

 4,200 meters altitude, August 7, ISDl, and PmujJe 4484, Sierra de las CrueeSj State of 

 Mexico, August 12, 1893. The former specim(»n is the type of Ft'.^fvrff rubra pavcijf ova 

 iScribner. « 



OESCKIPTKJX. 



A tufted perennial; culms slcndci', erect, smooth anil slunin|j:, 3-joiiilcd, about 

 CO cm. high; sheaths striate, glabrous, shorter than the interriodes; ligule nearly 

 tdjsolete; l)lades narrow, })ale grtH^n, rather soft, very smo(jth, loosely invohiti*, 10 

 to 45 em. bjng, acute at the apex; ]>aniele narrow. 10 to 15 em. long, nodding; rays 

 slenderj solitary, ascending, in about 8 sets, scabrous on the angles, i)ulvi]1ate at 

 base; spikelets pale green or somewdiat }tur[»Iish, lanceolate, 3 r>r 4-flow^ered, 8 to 10 

 mm. long; joints of the raehilla eyliudric, scabrous, 1 to 1.5 nun. long; glumes gla- 

 brous, unequal, the low(^r subulate-lanceolate, 1-nerved, 2 to 3 mm. long, the ujtper 



^aVoe. Am. Acad. 28: 123. 1893. 



