Macbride — Revision of Mertensia 17 
view. The tube is glabrous, a fact that places the plant in the 
Oblongifoliae. Even if we disregard this important character, the 
fusiform tap-root, large basal leaves and tubular corolla are features 
at variance with M. Bakeri or other Lanceolatae. It is true the 
root resembles that of M. fusiformis, but the other characters are 
different. M. Cusickii is its nearest relative, and the resemblance 
is so great that it is not surprising that the species masqueraded 
under that name. However, the corolla of M. Cusickii is smaller, 
the appendages in the throat are glabrons, the tube has five longi- 
tudinal rigid folds within, and the stamens reach only to the base 
of the corolla-lobes. Dr. Rydberg considers some large specimens 
from Beaver Canyon, Idaho, as belonging here, but those that I 
have from there are, on the other hand, somewhat luxuriant exam- 
ples of M. Bakeri, var. amoena. 
26. M. LoneirLora Greene, Pitt. ili. 261 (1897). M. oblongi- 
se aoe Syn. FI. ii. pt. i. 200 (1886), in part; Piper, Contrib. 
Nat. Herb. xi. 479 (1906); Howell, Fl. N. W. Am. 491 (1901); 
Rydb. Mem. N. Y. Bot. Gard. i. 336 (1900), not (Nutt.) G. Don. — 
Western Montana to Washington and eastern Oregon. — Mon- 
TANA: Columbia Falls, May 32, 1893, R. S. "Williams, ‘i 977. 
pres h eee Mts., May 21, "1885, Thomas Howell, 526; 
Geyer, n WASHINGTON: Hangman Creek, Sholnhe Co., 
Pa ndig 20, "s0, " Sandberg & Leiberg, no. 48; Cheney, 1890, Mrs. 
n T 
26a. var. ag eee (Piper), comb. nov. M. Horneri Piper, Contrib. 
U.S. Nat. Herb. xi. 479 (1906). — Eastern Oregon to southeastern 
Washington. — OrEGon: stony hillsides, eastern Oregon, April 13, 
1898, Cusick, no. 1830; basaltic soil, moist open hills, April 12, 
1907, Cusick, no. 3151. WASHINGTON: Waitsburg, April 3, 1897, 
Robt. M. Horner, no. R 155, B 366. 
Very near the species and possibly not even varietally distinct. 
‘ 26b. var. pulchella (Piper), comb. M. pulchella Piper, 
Contrib. U. S. Nat. Herb. xi. 478 (1906) ; ag pulchella Piper, subsp. 
glauca Piper, 1. c. 479. — Southern British Columbia to eastern 
Oregon. — IpaHo: valley of Clearwater River, Nez Perces Co., 
April 28, 1892, Sandberg, MacDougal & Heller, no. 75. OREGON: 
Wallowa Mts., May 1, 6, & June 8, Cusick, nos. 3159, 3155, & 3169; 
Umatilla River, Blue Mts., April 7 “1910, Cusick, no. 3424. Wasu- 
INGTON: hills west of Wena tchee, Mare h 31, 1899, W hited, 
1010? BririsH Comiunat Trail, May 26, 1902, J. M. Macou 
6,567. 
no. 
27. M. oBLONGIFOLIA (Nutt.) G. Don, Gen. Syst. iv. 372 (1838). 
Pulmonaria oblongifolia Nutt. Journ. Acad. Phil. vii. 43 (1834), not 
