PIPEK PfORTH AMERICAN SPECIES OF FE8TU* \. 29 



Wyoming : 



Nash Fork, Nelson 7746. 

 Utah : 



( Irazy Womans < !reek, Williams 2751. 



< 'ni.oii u>i>: 



Chicken Creek, Tracy, Earl, tfc Baker 344. 

 Routt County, Crandali 539 

 Veta Pass, S7iear 824. 

 South Park. WW/ 295a. 

 N i \ in a : 



Summit Lake, Griffiths & Morris 303. 



Pine Foresl Mountains, Griffiths & Morris2l5. 



L5j. Festuca ovina arizonica I Vasey I lack. 



Festuca arizonica Vasey, Contr. Sat. Herb. 1: 277. 1893. Type specimen in tin- 

 National Herbarium, collected by S. M. Tracy near Flagstaff, Arizona no. L18 . 



Festuca <>r; n <i arizonica Hack.: Beal, Grasses X. Am. 2: 598. 1896. Reduces the 

 above to subspecific rank. 



Festuca vaseyana Hack.; Beal, op. <it. 601. Type collected at Veta Pass, Colorado, 

 by Dr. < reorge Vasey in l s M. 



ica scabrella vaseyana Hack.; Beal, op. cit. 605. Type from " Colorado Veta 

 Pass i, \ a-r\ . at an altitude of 9,300 feet." 



The type specimens of the last two were in Professor Scribner's herbarium, accord- 

 ing toDoctor Beal. The National Herbarium specimens show thai Doctor Vasey col- 

 lected both arizonica and ingrata at Veta Pass, but Doctor BeaFs descriptions were 

 certainly based on the arizonica specimens in the case of Festuca scabrella vaseyana and 

 probably so in the case of Festuca vaseyana. 



Festucaovina arizonica occurs in Southern Colorado. Arizona, and New Mexico. \ 

 specimen from < Oregon, Hoover Creek. Gilliam County I.< iberg 137 . seems also refer- 

 able here. 



16. Festuca rigescens I Presl Kunth. 



Diplachm rigescens Presl. Reliq. Haenk. 1: 260. 1830. " llak in montanis Peruviae 

 huanoccensibus. " Type probably in Presl's herbarium in the University of Prague; 

 a duplicate in Bernhardi's herbarium, now in the possession of the Missouri Botan- 

 ical < rardens. 



ica rigescens Kunth, Enum. PI. 1: 403. 1833. Transfers the above to Festuca. 

 The only North American specimen we have seen was collected by S. M. Tracy "in 

 open pine woods. 4 miles northeast of Flagstaff, Arizona, June, 1887." 



DESCRIPTION. 



Densely tufted, smooth and glabrous up to the inflorescence; culms 2-jointed, hard 

 and polished, rigid, ■'!•> to :>n cm. high; sheaths Bmooth, shorter than the internodes, 

 the basal ouo much broadened and somewhat explanate; ligule nearly obsolete, 

 filiate; blades involute, cylindric, rigid, erect, smooth, pungent at the apex. 8 to 1l! 

 cm. long, 1 to 2 mm. in diameter; panicle narrow, erect. 5 to pi cm. long; ray- few, 

 solitary, erect, sparingly branched, angled, nearly smooth; spikelets rather closely 

 3-flowered, 6 to 7 mm. long; joints of the rachilla cylindric, smooth: glumes thick 

 and lirm. the lower 1-nerved. acute, 2 mm. long, the upper 3-nerved, a little longer, 

 both BCabrous toward the tips; lemma ovate, thick, convex, somewhat carinate toward 

 the acuminate apex, aw id ess or very short-awned, Bcabrous near the tip, 4 to 4.5 mm. 

 long, 5-nerved, the lateral nerves disappearing above the middle: palea a- long as 

 the lemma, obtuse, the nerves hispidulous. 



