Macbride — Revision of Mertensia 9 
Fort Huachuca, July 27, 1893, Mearns, no. 1547, & 1882, Lemmon, 
no. x. 
This species is closely related to the preceding but it is confined 
to its own range and the differences noted in the key appear con- 
stant. The calyx-lobes approach in shape species of the Czliatae, 
but otherwise the plant evidently belongs here. 
7. M. campanutata A. Nels. Bot. Gaz. liv. 150 (1912). — In the 
mountains of south-central Idaho. — Hailey, Blaine Co., July, 
1911, C. N. Woods, no. 328; moist flat near Alturus Lake, ‘Blaine 
Co., July 12, 1910, A.C. McCain (R. Mt. Herb.). Mr. McCain 
reports that the species occurs in only a few places, in which lo- 
calities, however, it is abundant and grows in clusters. It seems to 
be confined to the Sawtooth Nat ional Forest. 
. M. ARIZONICA Greene, Pitt. iii. 197 (1897). — — Utah and Ari- 
zona. — UTau: near Marysvale, July 23, 1905, Rydberg & Carl- 
ton, no. 7077; ‘Pine Valley Mt., May 17, 1902, Gooding, n 0. 855 
(R. Mt. Herb. ); Dixie National Forest, 1914, A. C. McCain, no. 
65 (R. Mt. Herb.). Ariz : 1869, Palmer (Nat. oi rb.). 
8a. var. umbratilis (Gre fear m.), comb. nov. M. umbratilis 
Greenm. Eryth. vii. 118 (1899). M. intermedia Rydb. Mem. N. Y. 
Bot. Gard. i. 335 (1900). M. stenoloba Greene, Pl. Baker. ili. 20 
901). 
Sampsonii Tidestr. Proc. Biol. Soc. Wash. “xxvi. 122 (1913). ae 
Western Montana to central Washington, eastern Oregon and 
Utah. — Montana: Bri ee s Pass, 1856, i er “ed 
TAH: 
8 a 
856; Crook Co., Blue Mts., June 10, 1902, Cusick, no. 2807. Wasx- 
INGTON: damp thickets at Ellensburg, April 25, 1897, Whited, no. 
307 (Nat. Herb.). 
The only really distinguishable feature of this variety is the more 
deeply cleft calyx and even this is a matter of degree. Much has 
been made also of the relative lengths of limb and corolla-tube but 
it seems to me clear that these characters are individual rather 
than specific or even good varietal traits, and appear to be im- 
