Macbride — A Revision of Mentzelia 27 
3. M. ete Dougl. ex Hook. Fl. Bor. Am. i. 222 (1834); 
T. & G. Fl. N. A. 534 (1840). Acrolasia albicaulis (Dougl.) Rydb. 
Bull. Pore ‘Club, xxx. 277 (1903). M. Tweedyi Rydb. Mem. N.Y. 
Bot. Gard. i. 271 (1900). M. tenerrima Rydb. 1. c. M. parviflora 
Heller, Bull Torr. Club, xxv. 199 (1898). Acrolasia Tweedyi 
a Bull. Torr. Club, xxx. 277 (1903). A. tenerrima Rydb. |. ¢ 
A. parviflora Heller, Muhl. i. 138 (1906). — Montana to Waking: 
ton, south to Arizona and Mew Mexico. — Ipano: aimee 
Nelson & Macbride, 1181; St. ood Merrill ot Wilcox, 840. 
Wromne: Leckie, Merri ll & Wilcox, 78 88; Badger, A. Noison, 
8339; Cummins, A. Nelson, 1471, L435: Halleck Cason. As Nel- 
son, 7443; Yellowstone River, A. Nelson & E. Nelson, 5759. 
CoLorapo: Los Pinos, Baker, 467, 468; Black Cafion, Baker, 
203. Uran: Cascieatar, Wooton, 428, Nevapa: Meadow Valley 
Wash, Goodding, 932; Calientes, Goodding, 943. New Mexico: 
Cliff, ’Metcal Ife, ae Santa Fe, Heller 3750: Aztec, Baker, 469; 
1852; Wright, 1 380. ARIZONA: Flagstaff, MacDougal, 416a; 
Grand Cafion, Macbride & Payson, 963; Camp Lowell, April 18, 
1881, Pringle. Orrcon: arid siaty plains of the Col umbia River 
Douglas; Simcoe Valley, 1860, Lyall; Harper Ranch, 
2095; Cline Falls, E. Nelson, 812. WaAsHINGTON: 1899, Vasey, 
25; Wallula, Cotton, 1037; Ritzville, Sandberg & Leiberg, 1 
a. var. VEATCHIANA (Kell.) Urb. & Gilg, Nova Acta head 
OLGG Ne . Cur. Ixxvi. 28 (1900). M. Veatchia ell. Proc. 
Cal. ie, ii. 99 (1863). M. eencphere Rydb. Bull. Torr. Club, 
Xxvill. 33 (1901). Acrolasia ctenophora Rydb. |. c. xxx. 277 (1903). 
erigieoet Jefferson River, Scribner, 60a. Ipano: Payette, Mac- 
865; June, 1892, Mulford: ’Falk’s Store, Macbride, 
Wiites: Fort Steele, A. Nelson, 4811. Cororapo: Larimer 
Co., Cowen, 248; Paradox, Walker, 109; Salida, Baker, Earle & 
Tracy, 14; Mesa Co., 1893, Long. Nevapa: Marmol Station, 
Carson City, Baker, 974; Wadsworth, Heller, 9600; Peavine Mt., 
, 9763. Catirornta: Campo, Abrams, 3589; Plumas Co., 
1878, ‘Mrs. Austin; Caliente, Helter, 7614; east of Laws, Heller, 
232: San Bernardino, Parish, 4165; Panamint Mts., Coville & 
Funston, 748; Erskin Creek, Purpus, 5498; San Bernardino Co., 
Heller, 7675; Mojave Desert, Parish, 11819; San Antonio Mts., 
1. M. Jobnston 1755. OREGON: Nuttall; Klamath Valley, 1864, 
 igaasaee Klamath Falls, Applegate, 212; Hoover Creek, 
3b. var. GRacILENTA (T. & G.) Wats. Bot. ug tee 114 (1871). 
M. gracilenta T. & G. Fl. N. A. i. 534 (1840). M. nitens Greene, 
