Macbride and Payson — Erigeron, Series Multifidi 77 
Peak, Sierra Co., 1875, Lemmon; Mt. San Barnardino, June, 1879, 
Wright. OREGON: Steins Mts., July 5, 1896, Leiberg, no. 2492: 
Pine Creek, southeastern Oregon, July, 1893, Mrs. Austin (R. Mt. 
Herb.). British COLUMBIA: Spencer’s Bridge, May 19, 1875, 
Macoun, no. 888. 
This variety, although seemingly only a discoid form of var. 
multifidus, apparently is not found in Colorado, a region where it 
would be expected on account of the prevalence of the rayed state. 
Our no. 3140a, representing the var. multzfidus was collected only 
a few feet from the type of the var. petraeus, and Dr. Butters 
informs us that his specimens of both forms were growing on the 
same alpine slope. 
2. E. trrripus Hook. Fl. Bor. Am. i. 17. t. 120 (1834). — 
E. compositus Pursh, var. trifidus (Hook.) Gray; Proc. Am. Acad. 
xvi. 90 (1880). — Colorado to southwestern on taud and eastern 
ig be ee Greenland. — GREENLAND: Herb. Hort. Bot. ees 
NTANA: Gallatin Co., June 11, 1901, Jones, (R. M 
Herb): Geis Falls, June 10, 1892, Williams (R. Mt. Herb); 
Madison Co., June 26, 1899, A. Nelson & E. Nelson, no. 5458; near 
Woodruff’s Falls, Aug. 2, 1883, Canby. Wyomine: Head of Pole 
Creek, May 18, 1895, A. Nelson, no. 1217 (R. Mt. Herb.); Sand 
A in . 
n 00, : ; 
Bridger, June 9, 1898, A. Nelson, no. 4614a (R. 7 Herb.) ; 
Laramie Hills, sae eer AN ae no. 3239 (R. Mt. Herb.); 
Pole Creek, May 894, ‘A. Nelson, no. 3816; Tepes t Ck July 
9, 1909, Willits. no. wl (R. Mt. He erb a CoLorapo: Ward, July 
20, 1907, Ramaley, D s & Robbins, no. 3152 (R. Mt. Herb.): 
Dutch Lake, June 14, oer Ramaley, no. 4660 (R. Mt. Herb.); 
west of Ward, June 26, and June 11, 1908, Ramaley & Robbins, 
nos. 5043 & 4643 (R. Mt. Herb.); Gilpin Co. , June-July, 1903, 
Tweedy, no. ect (R. Mt. Herb.); Golf Links, June 14, 1901, 
F. EF. & E.S ments, no. 89; west of Fort Collins, June 14 
1898, Crandall Re Mt. Herb.) ; Larimer Co. ie 4, 1895, Baker, 
no. 5241 (R. Mt. Herb.), also Sage = Herb.) ; Eldora, 
Aug. 14, 1912, Ramaley, no. 9338 (R. M Herb): Ward , July 19, 
1912, Ramaley, no. 9139 (R. Mt. Herb. ig Marshall Pass, ’ Aug. 20, 
He Baker, no. 868; White House Mts., 1873, Coulter. "OREGON: 
6, Cusick, no. 1402. WaAsHINGTON: haa Mts., J. M. Grant, 
no. 5 80 (not typical). 
This species in typical form, is confined to the central Rocky 
Mountains and Washington material heretofore placed here is 
largely refereable to E. compositus, var. multifidus. We cite 
Grant’s collection from the Olympic Mts. with great hesitancy. 
