PIPER .VOKTH AMERir^lS' SPK0IE8 OF FESTUCA. 48 



See page 12. 



Festuca octoflora hirtella Piper. 



See pnge 12. 



Festuca pacifica Piper. 



Festuca myuros L. 



Near Toluca, State of Mexico^ Rose ct* Painter «78G. 

 iMount Iztaccihnatl, Beam 22. 



Festuca megalura Xutt. 

 See page 17. 



Festuca rubra glaucodea Piper. 

 See page 22. 



Festuca ovina elliptica (Beal). 



Fe^tuea amplimma elUpttra Beal^ Grasses N. Am. 2: 603. 1896. Type collected in 

 the Sierra Madre, Chihualum, by Priugle (no. 14:58). Also collected in the State of 

 Durango, by Rose (no. 235S). 



Thi?5 plant 13 clo.sely allied to F. ovum arizonica Hack., differing in its broader, 

 loosely involute leaves, which are scabrous above and smooth beneath, and perhaps 

 in a taller habit. Sonic specimens of Pringlc's 1488 are awnless, others are short- 

 awned. 



Festuca hephaestopliila Xees. 



Festuca liephaesiopli'da Xees; Steud. Syn. PI. (.irain. 310. 1854. Type Ilartweg's no, 

 629 from Volcan de A^ua, rjuatt^niala. 



DESCRIPTION. 



Densely tufted, the underground i)ortiunsof the stems erector decumbent, densely 

 covered by the persisting blown .^carious sheaths; culms erect, 10 to 40 cm. high, 

 smouth, 2-jointed; sheaths of tlie culm elongated, extending halfway to the panicle 

 or more, smooth, sonu'what glaucous; ligule very short; blades straight or curved, 

 closely involute, firm, glaucous, acute at apex, slightly scabrous on the margins, 2 to 

 6 cm. long; panicle purpU*, erect, narrow, usually close, 2 to 5, rarely 8, cm. long; 

 rays short, solitary, scabrous on the angles, floriftTous nearly to the base; spikelets 

 3 or 4-llowered, 5 to 6 inni. long, somewhat glaucous; joints of the rachilla cylindric- 

 clavate, nearly smooth, 1 mm. long; glumes unetpial, smooth or scabrous on the 

 keoh, scarinus-margincd, the lower subulate-triangular, 1-nerved, 2 to 3 mm. long, 

 the upper 3-nerved, rarely 5-nerved, 4 to 4.5 mm, long; lemma firm, convex, faintly 

 nci'ved, ovate-oblong, acuminate, smooth, 3 to 5 mm. long; palea oblong, shorter 

 than the lemma, bifi<l at apex, the nerves scabrous; ovary glabrous at apex. 

 The following specimens have been examined: 



Mount Orizaba, Llehnt<mn 409. 



;^[ount Orizaba, Pringk 8588. 



Xevada de Toluca, I^riiHjIe 4221. 



IztaccihuatI, Purpnx 228. 



Festuca liebmanni Fourn. 



Festuca liebmanni Fourn. Jlex. PL 2: 124. 1881. 



''FoUis scaberrinus longissimis lineari-lanceolatis, summo i^aniculani superante, 

 ligulal)revi fimbriata; panicularacemosaerecta, axil lis glabris, radiolisappressisscabris; 

 spicnlis 4-5-fioris, fiore termlnali abortivo; ghimis valde inaequalibus, superiore fere 



12364—0(1—4 



