FESTUCE.E. 547 



nerves near the base, oval, abruptly acute, the 5 nerves obscure; 

 palea nearly as long as its glume, scabrid on the keels. For a fur- 

 ther account see Vol. I. p. 137, Fig. 67. 



Yermout, Prinyle; Kew Jersey, Scribner for U. S. Dept. Agri- 

 cul. 04:>; Michigan, Clark '^W, 717, Heal 127, V:iS,Cooleii; :Minne- 

 sota, Arthur X 18, B 527; Colorado, Lelteruum 30; Arizona, 

 Tuumey 122 ; Oregon, Howell. 



Dry soil, rarely seen in woods. Extensively naturalized from 

 Euroiie, and possibly indigenous northward. 



28. P. Wheeleri Yasey, Kothr. Kep. l?ot. U. S. Surv. G:291 

 (1878). 



Perennial, with running rootstocks. Culms 20-00 cm. high. 

 Ligule 1.5 mm. long; blades of sterile shoots 15-20 cm. long, 3 

 mm. wide, rigid, conduplicate or involute with a lirm ol)li(|ue point, 

 U2)per l)lade of culm 1-3 cm. long. Panicle o[>en, thin. .S-12 

 cm. long, ovoid, rays slender, mostly in pairs, the longer 3-5 cm. 

 long, l)earing a few spikelets near the apex. Spikelets lance-ellip- 

 tical, G-7 mm. long, 3-llowered, lower joint of racliilla 1.5 mm. 

 long; empty glumes subequal, ovato-laiu'eolatc, 3-nerved, second 

 one 3.7 mm. long; floral glume not webbed, 4.2 mm. long, ciliate 

 on the lateral nerves and on the lower two-fifths of the keel, oval, 

 subacute Avhen spread, margins scarious; palea truncate, very 

 nearly as long as its glume, ciliate on the keels. 



Colorado (South Park). Wolfe 1131-', in herb. Scrii)ner, Dr. 

 Enyelman, Lefterman 29, 44. 



2!). P. confinis Vasey, 111. X. A. (Jr. 2: 75 (I8!i3). 



An erect tufted dio'cious perennial, 10-20-30 cm. high, from 

 slender creeping rootstocks. The second and often the third and 

 fourth leaves from the top of the culms containing erect leafy, non- 

 flowering branches in their axils. Sheaths smooth; ligule involute, 

 acute. 1-2 mm. long; blades of the branches smooth, exteiuling to 

 the base or the apex of the panicles, coiuluplicate, in cross-section 

 ovate or oval, destitute of bnlliform cells, (i-S mm. di'am., 7-nerved 

 with 9 bands of sclerencbyma, the extreme a])ex obli([uely obtuse, 

 the ui^per blade 1-3 cm. loug, Avith the upper part of the sheath 

 involute,' like the blade. Panicle dense, linear, subsecund, 2-4-5 



