PIPER NORTH AMERICAN SPECIES 01 FESTUCA. 1 5 



acters <>f tufted habit, narrow involute leaves, long ligule, and awued lemma. Addi- 

 tional material is neceasar} before an} satisfactory conclusion can i»- reached. 

 Specimens liave been examined as follows: 



Nevada de Toluca, Rost & Painter 7983. 



Mount Orizaba, Seaton 193, 228. 



Without locality, Liebmann 510, 511. 



San Luis Potosi, Parry & Palmer924. 



Near Cima, Ro*< & Painter 7208. 



Festuca rosei sp. nov. 



Perennial, tufted; culms stout, over I meter high, l or 5-jointed, smooth and 

 glabrous; sheaths smooth, those of the lower internodes equaling or exceeding 

 them: ligule short, ciliate; blades of tin- numerous basal leaves filiform and invo- 

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

 about 20 cm. long; rays in about •"> sets, solitary, but nearly all with a short basal 

 branch, somewhat scabrous on the angles; spikelets purplish, somewhat glaucous, 



oblong, 7 to 9 mm. long, 3 to 5-flowered; joints of the rachilla nearly bi >th, cylin- 



dric; glumes unequal, firm in texture, scabrous on the nerve above, the lower lanceo- 

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

 firm in texture, with a very narrow scarious margin, ovate-lanceolate, acuminate, 

 obscurely glaucous, 6 to ~ nun. lonu r : palea lanceolate, bidentate, scabrous on the 

 nerves, the inflexed sides less than half the internerve. 



Type Bpecimen collected near Cima. State of Mexico, by •'• N. Hose ami .!. II. 

 Painter I uo. 7210), September 19, L903. 



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

 leaves, stout culms, short ligules, ami awnless lemma-. 



Festuca willdenowiana Schultes. 



Festuca mexicana Willd.; Spreng. Syst. 1: 356. L825. 



" V. panicula nutante pauciflora, rami- flexuosis, spiculis 3-floris strigoso-hispidie 

 aristatis, foliis linearibus angustissimis. Mexico." 



Festuca willdenowiana Schultes, Mant. 3: 650. 1825. Changes name of above, owing 



to the older FestUCa im rim, ,</ R. & S. Syst. 2: 7'.V2. 1817. 



Fournier, followed by Hemsley, refers to thi< species a specimen collected by 

 Schaffner without locality. 



We have seen no authentic material of this species, hut we would refer to it w itii 

 little doubt the following specimens: Seaton 227 B, collected on Mount Orizaba, 

 4,200 meters altitude, August 7. 1891, and Pringle 4484, Sierra de las Cruces, State of 

 Mexico, August 12, L893. The former specimen is the type of Festuca rubra pau 

 Scrihner." 



DE8< RIPTION. 



A tufted perennial: culms Blender, erect. Bmooth and shining, 3-jointed, about 

 60 cm. high; sheaths striate, glabrous, shorter than the internodes; ligule nearly 

 obsolete; blades narrow, pale green, rather -oft. very smooth, loosely involute, 10 

 to 45 cm. Long, acute at the apex; panicle narrow. 10 to 15 cm. long, nodding; rays 

 slender, solitary, ascending, in about 3 sets, scabrous on the angles, pulvillate al 

 base; spikelets pale green or somewhat purplish, lanceolate. 3 or t-flowered, 8 to 10 

 nun. long; joint- of the rachilla cylindric, scabrous, 1 to 1.5 nun. long; glumes gla- 

 brous, unequal, the lower- subulate-lanceolate, L-nerved, 2 to 3 mm. long, the upper 



a Pro,-. Am. Acad. 28: 123. 1893. 



