46 CONTRIIUJTIONR FROM THE NATIONAL HKRHARIUM, 



3-nervod, 4 nun. lon;^'; IcMnjna lanceolate, plainly 5-nerve(l, convex, the whole Itaek 

 appresaed-sca-broiis i>r nearly hirtellous, about 7 mm. long, acuminate or often short- 

 awned; palea linear-lanceolate, cleft at apex^ about equalinti; tlie len:mm, tlie nerve;:* 

 scal)roufi, the inflexed sides half as broad as the internerve. 



Festuca fratercula Rupr. 



Fediica fritter cala Rupr.; Fourn. Mex. PL 2: 124. 1881. 



**Cuhuu fere tripedaH .scabro; foliis: 3 ^^'' latip, retrorsum scabris, longipi, planis, 

 apLce longe cunvoluti^; ligula b^evi8^^ilna; panicula libera effusa fere podali folium 

 Hummum longc fetui>erante, radiiy geminite divaricatia inaequalibus parce divip-lM; 

 spiculis 8-floriH cnm tcrminali quarto abortivo; glumis inaequalibus acutis, floribus 

 teretibus remotis, palea inferiore acuta potissimum in fioribus summis brevitcr 

 mucronataj glabra; squamulis lanceolatis ovarium aequantibus. 



*' In humidity inter Vinos montis Orizabensis, 11-12000 ^ (Gal. n* 5778) ; Cumhre *h' 

 Estepa, augusto (Liebin.) " 



AVo have seen no ^Icxican specimens of this species, but have referred to it several 

 collections from the L'nited States.^ 



Festuca amplissima Rupr. 



■ 



Festucd iunpll'^i^ima Rnpr. ; Fourn. Mex. PL 2: 125. 1881. 



Type collected by dalootti, " Secus rivulos pr. Vaqueria del Jacal in monte Orixa- 

 bensi/' 3.225 meters. 



DESCRirTlOX. 



Cuhns stout, L to l.o meters high, smooth or scabridulous, firm, 4 or 5-jointed; 

 sheaths ghibrouSj striate above, shorter than the internodes, the lowermost becoming 

 fibrous when old; lignle very shorty trnncate; blades flat or loosely involute, 6 to 12 

 mm. broad, 30 to 50 cm. long, slightly scabrous on each side; panicle 30 to 50 cm. 

 long, erect, diffuse; rays in about 8 sets of 2 or 3 each, scabrons, brancluMl; spikelets 

 ;reen or purplish, long-stalked, oblong-elliptic, flattened, 5 to 9-flowere<l, to 13 





mm. long; joints of tlie racbillu scabrous, about 1 mm. long; glumes unequal, gla- 

 brous, the lower 1-nerved, 3 to 3.5 mm. long, the uj)per broader, 3-nerved, 5 to 

 6 mm. long; lennna 6 to 7 mm. long, lanceolate, finely scabrous, subcarinate, the 

 nerves rather pntminent, acute; palea acute, a little shorter than the lemma, the 

 nerves scabrous, the inflexed sides about half the width of the internerve. 

 Keadily recognized by its stout habit and ample floribund panicle. 

 The following specimens have been examined: 



Sierra do Ajusco, Prhigh 0555. 



Sierra dc San Felipe, C. L. Smith 924. 



Mount Zempoaltepcc, Nelson 648. 



Mountains near Patzcuaro, Prhigle 3945. 



Mount Orizaba, Liehnumn (ex Fournier). 



Desierto Viejo, Bourgeau 1307 (ex Fournier). 



Festuca livida (H. B. K.) WilUl. 



Bromus llrlda.^ II. B. K. ]^ov. Gen. & Sp. 1: 150. pL 689. 1815, '*Crescit in alta 

 ];)lanitie Tulucana, alt. 1380 liexap." 



Scliedovorus lindus R. & S. Syst. 2: 707. 1817. 



Festuca Uvida Willd. in Spreng. Syst. 1; 258. 1825. 



Ilelleria Ihida Fourn. Mex. PL 2: 129. 1881. All of these are based on Hromufi 

 ItrUnn 11. B. K. 



Fediica grandiflora^ikixxiX. Syn. PL Gram. 311. 1854. Based on Heller's 315 from 

 Volcano de Toluca. 



«See p. :J0 above. 



