358 A. S. Hitchcock. 
The type specimen is Suksdorf 135, collected on wet rocks near 
Rooster Rock, Multnomah County, Oreg., July 16, 1885. This is in the 
National Herbarium. (Pl. XX.) 
| Distribution: British Columbia to Arizona. 
Vancouver Island: Macoun 82. Washington: Clallam County, 
Elmer 1953. Falcon valley, Suksdorf 132; Seattle, Henderson 2113 
(this specimen has a decumbent and rooting base); Whatcom County, 
Suksdorf 1184; Bingen, Suksdorf 2829. Oregon: Yamhill County, 
Shear 1633, 1636, 1639, 1643, 1646; Roseburg, Howell 216, 217 in 
1887; Portland, Bolander in 1886; Umpqua valley, Howell 218; Wash- 
ington County, Howell 53 in 1881. California: Bolander 4801, 6079 
Mendocino County, Davy and Blasdale 5199, 5262, 6118; Brown 779; 
Placer County, Palmer 2420; Middle Tule River, Purpus 5638. Ari- 
zona: Santa Rita Mountains, Pringle in 1884. 
Many of the specimens referred here have a more dense panicle 
than the type but differ from the large forms of A. microphylla in having 
a more verticillately lobed panicle and less awn-pointed glumes. From 
A. exarata this species differs in possessing the awn and in the less 
scabrous glumes. A few specimens seem to be intermediate between 
this and the other two species. From A. longiligula it differs in the 
shorter ligule and in the short flower-bearing branches of the panicle. 
This species appears to be the A. virescens of Thurber in Botany of 
California, page 274, but differs from A. virescens H. B. K. in the longer 
awn, more spreading panicle, and stouter culms. 
6. Agrostis ($ Euagrostis) hiemalis (Walt.) B. S. P. subsp. subrepens 
A. S. Hitche., l. c., p. 44. 
Culms erect, tall and robust, about 1 m high, provided with rhizomes. 
Panicles with relatively shorter branches. Spikelets 2,5 mm long; flower- 
ing glume 1,6 mm long; palet minute (0,2 mm long). 
Type specimen in National Herbarium collected by C. G. Pringle in 
wet places, pine plains, base of Sierra Madre Mountains, State of Chi- 
huahua, Mexieo, September 28, 1887 (No. 1420). 
I have referred the following to this, although the specimens do not 
in all cases show rhizomes or decumbent rooting bases on account of 
scanty material. 
New Mexico: Near Cloverdale, Mearns 490. Nevada: Ruby Valley, 
Watson 1282. Arizona: Santa Catalina Mountains, Toumey 5 in 
1894; Pringle in 1881; Rincon Mountains, Nealley 175; Tucson, Tou- 
mey in 1892. Mexico: Chihuahua, Townsend and Baker 276. Vene- 
zuela: Fendler 2541. 
T. Agrostis ($ Euagrostis) hiemalis (Walt.) B. S. P. subsp. geminata 
(Trin.) A. S. Hitche., l. c., p. 44. 
A. geminata Trin., Gram., Unifl., 207. 1824. „V. spp. ex Unalaschka, 
unde retulit cl. Dr. Eschholz.“ The type specimen of this is in the 
Trinius herbarium. A portion is deposited in the National Herbarium. 
The plate in Trinius's Spec. Gram., I, 28 is characteristic. 
