AGROSTIDE^. ol? 



cm. long, acute, sometimes 10-15 iinii. wide. Panicle 4-G-:20 cm. 

 long, narrow. Spikelets 4-5 mm. long, ovate-laucelate; emjjty 

 glumes oboval, first a little over 2 mm. long, 1-nerved, second about 

 3 mm. long with 3 obscure nerves; floral glume oval, compressed- 

 keeled, scabrid on the back, the margins and tip scarious; palea 

 oblong, minutely scabrid. 



The above notes under the species Avere made after a study of 

 specimens collected by Lieut. A. W. Greely in 1883 and 1883 in 

 Grinnell. 



2, A. arundinacea (Trin.). Vilfa arundinacea Trin. Unifl. 

 157 (1824). Sporohohis anindinaceus Ynsej, Cat. Gr. U. S. (1885). 

 Colpoditim arundiiiaceum Hook. Fl. Bor. Am. 2:238 (1840). 



A stout 2)erennial, 30-90 cm. high, with creeping rootstocks; 

 culms simple. Sheaths about half as long as the internodes; ligule 

 lacerate, 3-4-7 mm. long; blades of sterile shoots few and short, 

 the middle and upper ones 25 cm. long, 1 cm. wide. Panicle ex- 

 serted, lanceolate, 20-30 cm. long; rays scabrous in half- whorls of 

 4-7, which are distant 4-5 cm. ; some of them only 2-3 cm. long 

 and flower-bearing for their whole length, the longest 10-12 cm., 

 interrupted and naked for a half to a third of their length. Spike- 

 lets on short pedicels, appressed, light green, often tinged with 

 purple; empty glumes thin, ovate-lanceolate, compressed, keeled, 

 1-3-nerved. first 3-4 mm. long, second 3-nerved, 4-5 mm. long; 

 floral glume scabrid, compressed, ovate-lanceolate, 5-nerved, the 

 lateral nerves obscure, 4.5 mm. long; palea elliptical, round on 

 the back, nerves obscure, 4 mm. long. 



Alaska, Harringtoji va. 1871-2, L. M. Turner m 1884; Bering 

 Sea (Pribylov Islands), Dr. Merriam. 



Alaska and British America. 



65. (134). CiNNA L. Sp. PI. 5 (1753). Ahola Adans. Fam. 2: 

 31 (1763). BhiHia Fries, Novit. Fl. Suec. Mant. 2:2 (1839). 



Spikelets 1-flowered, compressed in an open spreading panicle, 

 rachilla articulate above the outer glumes and often produced be- 

 yond the floret in a small pedicel. Empty glumes persistent, 

 lanceolate, acute, with a hispid keel, first 1-nerved, second 1-3- 

 nerved; floral glume usually stipitate above the empty glumes and 



