29 
larger and firmer empty glumes, and longer awns. It is an Australian grass 
which has been introduced into some parts of California. 
v Specimens in the National Herbarium: 6468 Bolander, without date or locality 
Miss Norton, San Jose, 1879; and Bolander 1510, in Herb. Gray, ex Thurb., and 
n Herb. Missouri loa Garder 
* * Spikelets subterete, approximate. 
t Basal culm leaves longer than the upper ones, empty glumes awnless. 
1 Flowering glumes long-awned. 
Agropyron richardsoni qa in (fide Kew Index). Triticum richardsoni Trin. in 
liq. Serad., Linn., 7 (1838), according to a specimen from the St. Peters- 
burg usd in the a Herbarium. Agropyron unilaterale Cassidy, Bull. 
Colo. Expt. Station 12: 63 (1890); A. caninum unilaterale Vasey, Contr. U. S. Nat. 
Herb., 1: 279, not A. unilaterale Beauv. Agrost., 102. 4. violascens Beal, Grass. 
896). 
From the Saskatchewan to the mountains of Colorado. Specimens in the 
National Herbarium from British Columbia: 103 J. Macoun, 1889, Spencer 
Bridge; 29 and 33 J. Macoun, 1872, Saskatchewan plains; 117 J. Macoun, 1879, 
Red Deer Lakes. Minnesota: Ballard, ed Cass County. South Dakota: Geyer, 
1839, James River; Dudley, 1883. Montana: Scribner, 1883. Nebraska: Bates, 
1892. Co 1 Craik dall, 1890; 1169, J We lfe, 1873; Dr. Vasey, 1884, Pen Gulch 
and Veta Pass. Specimens in the Gray herbarium, British Columbia: Richard- 
son, type pes Bourgeau, 1858, e J. Macoun, 1880, Cypress 
Hills. Montana: 422 Seribner, 1883. Colorado: E. Hall, 1864; 210 Hall and Har- 
bour, 1862; 881 and 1168 J. Wolfe, 1873, Twin Lakes; 446 E. E Greene, 1870, high 
mountains near Golden. 
Agropyron richardsoni ciliatum Seribn. & Smith, var. nov. Leaf sheaths and leaf 
blades pilose-pubescent; ligule 1 line long; spikelets 8 lines long; empty glumes 
5- to T-nerved, tipped with an awn as long as the spikelet 
“In the Belt Mountains, Montana; altitude, 4,500 feet; F. Lamson-Scribner, 
July, 1 
Agropyron caninum Beauv. Agrost.,p.102. Triticum caninum Linn. A. caninoides 
Beal, Grass. N. Am., II, 640 (1896). Distinguished from 4. repens by its intra- 
vaginal innovations; leaves scabrous on both surfaces; more crowded erect 
spikelets; long-awned flowering glumes, and nodding spikes. It may be dis- 
lor 
New England States, Nova Scotia, Canada, and westward abro the region 
of the Great Lakes to the Black Hills of South Dakota and the Rocky Mountains. 
It has also been introduced with alga ge grain and grass seeds quite widely 
through the Northern and Middle Sta 
Forms s this, with unilateral aoc. have heim referred to 4. richardsoni 
which has awns three or four times as long as those of caninum, and the flower- 
ing glume idiutetn below the origin of erip awn. Slender forms have been 
referred by Parky to A. tenerum pel and forms with short compact spikes 
and short awns to 4. riolaceum Vas 
e caninum pu ubesc ens Seribn. & Smith, vat. nov. Es leaf sheaths and 
Macoun at Little flheisenso Lake, British Columbia, No. 99, June 18, 1889. 
tt Flowering glumes awnless or short-awned, spikes erect. C 
Vasey in Coult., Bot. Gaz., 2: 258 (1885). New Mexico and "e 
eastward to 
'opyron tenerum 
southern California to Washington and British oman and to 
.... e T te Mountains of Taaa T 
Collected by John 
