80 MISSOURI BOTANICAL GARDEN. 
and foot hills, British Columbia to Oregon, Nevada, Da- 
kota and Kansas. — Specimens examined from Qu’ Appelle 
(Macoun, 1879, 192 and 1534) and Swift Current, in 
British America (Macoun, 1884); and from Washington 
(Brandegee, 1883, 1067; Suksdorf, 1886, 896), Oregon 
(Spalding; Suckley, 1855; Lyall, 1860; Howell, 1880 
and 1881; Cusick, 1881, 983; Henderson, 1886, 103), 
Montana (Hayden, 1860; Scribner, 1883, 247; Tweedy, 
1888, 104), Tyoming (Hayden, 1853-4), Dakota 
(Hayden, 1853; Glatfelter, 1865, 376; Vasey, 1868, 
499; Canby, 1883, 278; Manning, 1884), Nevada, ( An- 
derson, 1865, 243; Watson, 1868, 1048), Utah ( Hayden, 
1859 ; Jones, 1880, 1729), Colorado (Hall and Harbour, 
1862, 495; Parry, 1867, 186; Brandegee, 1874; Farwell, 
1890), and Kansas (Damon, 1888; Kellerman, 1889).— 
Plate 17. Young plants distributed from Oregon by Howell 
in 1885 may possibly belong here, possibly to salicifolius. 
6. R. HYMENOSEPALUS, Torr. — One to three feet high, 
from a cluster of deep-seated Dahlia-like tuberous roots, 
subsimple, papillate to glabrous, often red; leaves rather 
succulent, more or less wavy margined, often 5x20 cm. 
or larger, elliptical to oblanceolate, obtuse to very sharply 
acuminate, the acute base decurrent on the short thick peti- 
oles ; inflorescence ample, compound, with elongated sub- 
erect branches; pedicels slender, about as long as the fruit, 
less tumidly jointed below the middle; valves flexible, ovate, 
about 10x15 mm., obtuse to subacute, with an open sinus; 
achene 3x5.3 mm. — Bot. Mex. Bound. Surv. (1858), 177; 
Watson, Bot. Calif. ii. 8, 479; Parry, Amer. Nat. ix. 350; 
Greene, Am. Nat. xii. 175; Havard, Proc. Nat. Mus. 1885, 
525; Vasey & Rose, Contr. Nat. Herb. i. 11; Brandegee, 
Pl. from Baja, 204; Rusby, Drug. Bull. Nov. 1890.—A. 
Saxei, Kell. Pac. Rur. Press, 1879; R. Arizonicus, Britt., 
Trans. N. Y. Acad. viii. (1888), 73.— Dry soil in the 
plains and lower mountains, California and Lower California 
to Utah, the Indian Territory, and Texas. — Specimens 
