538 Piper: West AMERICAN 
other differences. JL. floribunda as at present received shows some 
variation as regards the size of the flowers and also in pubescence. 
The following specimens are referred to this species. 
WasHincton: Yakima Region, July 1883, Brandegee, 986. 
OREGON: Without locality, 1881, Cusick, r78. 
CatirorniA: Lake Tahoe, Lemmon, without locality, 1874, 
Lemmon, 734; Susanville, Lassen county, 2 July 1892, Brandegee ; 
Lake City Pass, July, 1892, Mrs. R. M. Austin. 
Ipano: Hailey, 22 July 1895, Henderson, 3195; Challis 
Divide, 3 August 1895, Henderson, 3679. 
Nevapa: Ruby Valley, August 1868, Watson, 860. 
Uran: American Fork Cafion, 16 July 1895, WZ £. Jones; 
Provo, 8 July 1894, 42. E. Jones, 5594; Wasatch Mts., July 
1869, Watson, 860. ; 
Arizona: Casnino, August 1883, Rusby, 746; Base of San 
Francisco Mt., September 1884, /. G. Lemmon & wife. 
Cotorapo: Near Dix P. O., 10 July 1898, Baker, Larle & 
Tracy, 471 ; Golden City, 8 June 1870, Greene, 306 ; Headwaters 
of Clear Creek, 1861, Parry, 290; Estes Park, 8 June 1884, /: 
Ball; Pagosa Springs, July 1899, Baker, 557; Canon City, June 
1877, Brandegee ; Clear Creek Cafion, 10 June 1870, Greene y 
Without locality, Hall & Harbour, 437. 
Wyomine: Yellowstone Lake, 24 August 1899, 4. & E, Nel- 
son, 6647 ; Sybille Creek, 8 July 1894, A. Nelson, 348 ; between 
Sheridan and Buffalo, 15 June-15 July 1900, 7weedy, 3579- 
Montana: Without locality, 3 July 1883, Scribner, T7175 
Glen Creek, 29 July 1899, A. & E. Nelson, 5561. 
Assintpora : Crane Lake, 9 June 1894, Macoun. 
SASKATCHEWAN : Without locality, 1858, Bourgeau. 
2. LappuLa piFFusa Greene, Pittonia, 2: 182. 1891 
Echinospermum diffusum Lehm. Pugillus, 2: 23. 1830. 
I have followed Dr. Gray in his interpretation of this species 
and as he compared his materal with the type it is doubtless correct 
According to this view Lehmann’s characterization of the corolla’ 
as white isanerror. It is barely possible however that Lehmann s 
original is a different plant from the one here considered, aS there 
are at least three white-flowered species in the Columbia Basin, 
