LAMSON-SCRIBNER AND MERRILL — GRASSES OF ALASKA. 53 



Panicles elongated, cylindrical; awns less than one-half the length of 

 the glumes; upper sheath not inflated; culm from a bulhous base. . 1. P. pratense. 



Panicles not elongated, ovoid or oblong; awns about one-half the 

 length of the glumes; upper sheath inflated; culms not bulbous 

 at the base 2. P. alpinum . 



1. Phleum pratense L. Sp. PI. 59. 1753. Timothy. 

 A simple, erect, tufted perennial, 30 to 120 cm, high with dense, cylindrical, spike- 

 like panicles 2.5 to 10 cm. long. 



Kodiak Island to Juneau and Wrangell in southeastern Alaska, east to Newfoundland 

 and southward, also in Asia. Widely cultivated and completely naturalized in fields 

 and waste grounds. 



Dr. Kellogg states that this grass was growing luxuriantly at Fort Simpson, in thick- 

 lodged masses, without care or culture. 



2. Phleum alpinum L, Sp. PI. 59. 1753. Mountain timothy. 

 Phleum haenkcanum Presl, Rel. Haenk. 1:245. 1830. 



A glabrous, erect perennial 15 cm. high, with ovoid or oblong spike like panicles 

 1 to 5 cm. long. 



Moist soils on the Pribilof and Aleutian islands, and on the main land from 

 Nu'shagak to southeastern Alaska, eastward to Labrador, and southward in the 

 mountains to New England, Arizona, and California; also in Europe, Asia, and 

 South America. 



Mr. Nash a doubtfully refers a specimen collected by R. S. Williams at Dawson to 

 Phleum haenkeanum Presl, but we can find no valid characters by which this species 

 can be distinguished from Phleum alpinum, and here consider it only as a synonym of 

 the latter species. 



4. ALOPECURUS L. 



Alopecurus L. Sp. PI. t>0. 1753. 



Spikelets 1-flowered, strongly flattened ; rachilla articulated below the equal glumes, 

 more or less ciliate, especially along the keels, usually connate at the base; lemma 

 hyaline, obtuse, usually awned on the back. Annual or perennial grasses, with erect 

 or ascending culms, flat leaves, and densely flowered cylindrical or ovoid, spike-like 

 panicles. 



Plants slender; panicles cylindrical, 5 to 7 mm. in diameter; spike- 

 lets somewhat pubescent, 2 mm. long. 



Awn exserted, exceeding the glumes 1. A . geniculates . 



Awn not exserted, equaling or shorter than the flumes la. A. geniculates 



fulvus. 

 Plants stout; panicles ovate, 10 to 15 mm. in diameter, spikelets 4 



to 6 mm. long, densely villous. 



Panicles about 1 cm. in diameter; spikelets 4 mm. long; glumes 



obtuse 2. A. alpinus. 



Panicles 1.5 cm. in diameter; spikelets 6 mm. long; glumes 



acute 3. A. stejnegeri. 



1. Alopecurus geniculates L. Sp. PI. 60. 1753. 



A slender perennial 15 to 50 cm. high, with culms decumbent and branched at the 

 base, often inflated sheaths, spreading leaves, and slender spike-like panicles 2.5 to 

 7.5 cm. long, spikelets 2 mm. long, silky-hairy on the keels; lemma awned from near 

 the base, the awn slender, about twice as long as the glumes. 



Wet meadows, banks of streams, and ditches at Kodiak Island and Yakutat Bay, 

 eastward to Newfoundland, and throughout the United States; also in Asia. 



Specimens examined: Kodiak, Evans 377, Cole in 1899, Trelease & Saunders 2899; 

 Yakutat, Trelease tfc fiaiuulers 2898. 



a Bull. N. Y. Bot. Gard, 2: 150, 1901. 



