FLOWERING PLANTS AND FERNS OF ARIZONA 89 



10. Festuca rubra L., Sp. PL 74. 1753. 



Baldy Peak, 11,000 feet (Apache County), San Francisco Peaks 

 (Coconino County), also in Pima County, moist meadows and marshes, 

 July to August. Arctic America, south in the mountains to Georgia, 

 Colorado, Arizona, and California; also in the Old World. 



11. Festuca ovina L., Sp. PL 73. 1753. 



Apache and Coconino Counties, 7,000 to 12,500 feet, open woods 

 and rocky slopes, August to September. Alaska to Nebraska, New 

 Mexico, Arizona, and California, introduced eastward; eircumpolar. 



An alpine form with short culms and smooth blades, also found in 

 Arizona, is var. brachyphylla (Schult.) Piper (F. brachyphylla Schult.). 



12. Festuca idahoensis Elmer, Bot. Gaz. 36: 53. 1903. 



White Mountains (Apache County), San Francisco Peaks (Coconino 

 County), open woods and rocky slopes, July to August. British 

 Columbia to Alberta, south to northern New Mexico, Arizona, and 

 central California. 



13. Festuca arizonica Vasey, Contrib. U. S. Natl. Herbarium 1: 277. 



1893. 



Apache, Coconino, Yavapai, Greenlee, Graham, and Pima Counties, 

 2,500 to 9,500 feet, dry plains and open w T oods, June to August, type 

 from Flagstaff (Tracy 118). Colorado, Nevada, New Mexico, and 

 Arizona. 



This is the commonest species of Festuca in Arizona. 



3. PUCCINELLIA. Alkali-grass 



Dwarf annuals; lemmas firm, obtuse, pubescent on the nerves; 

 palea as long as the lemma or a little shorter. 



1. Puccinellia parishii Hitchc, Biol. Soc. Wash. Proc. 41: 157. 1928. 

 Tuba, Coconino County {Peebles 11842), marsh, 5,000 feet, June. 

 California and Arizona, rare. 



4. GLYCERIA. Manna-grass 



Aquatic perennials with closed sheaths; lemmas broad, scarious at 

 apex, glabrous; palea as long as or a little longer than the lemma. 

 These are palatable forage grasses. 



Key to the species 



1. Spikelets linear, usually more than 1 cm. long; panicles narrow, elongate, 20 

 to 40 cm. long: Section Euglyceria 1. G. borealis. 



1. Spikelets ovate, usually less than 5 mm. long; panicles open, nodding, the 

 branches drooping: Section Hydropoa (2). 

 2. First glume 0.5 mm. long; culms usually less than 1 meter high. 



2. G. STRIATA. 



2. First glume 1 mm. long; culms 1 to 2 meters high 3. G. elata. 



1. Glyceria borealis (Nash) Batchelder, Manchester Inst. Proc. 1: 

 74. 1900. 



Panicularia borealis Nash, Torrey Bot. Club Bui. 24: 348. 

 1897. 



Apache, Cochise, and Pima Counties, 8,000 to 9,000 feet, wet places, 

 often in water, August. Newfoundland to Alaska, southward to 

 Massachusetts, New Mexico, Arizona, and California. 



