Macbride — Revision of Mertensia 19 
Humboldt Mts., July, 1865, Watson, no. 841. WASHINGTON: 
Dutch John’s, near Wenatchee, April 23, 1899, Whited. no. 1034, 
in part; Rattlesnake Mts., April 29, 1901, J. S. Cotton, no. 328. 
28b. oe eee (Piper), comb. nov. M. pubescens Piper, 
. Nat i 
Contrib. U Herb. xi. 479 (1906). — WasHincTon: Water- 
ville, Douglas Co., April 23, 1900, Whited, no. 1214 (Nat. Herb.). 
c. var. nevadensis ( s.), comb. nov nevadensis A 
Creek Canyon, near Reno, May 16, 1903, P. B. Kennedy & G. H. 
True, no. 711 (R. Mt. Herb.); Ruby Mts. July 8, 1912, Heller, 
nos. 10541 & 10546; Clover Mt. Range near Deeth, July 24, 1908, 
Heller, no. 9181 (not typical). The specimens by Mr. Heller dis- 
tributed as M. lanceolata. 
The varieties merge with the species and with each other. The 
variety nevadensis is typically well-marked by its open inflorescence 
but the individual plants vary from glabrous to pubescent as in the 
variety subcalva. 
mediocriter congestis; pedicellis fructiferis 5-8 mm. longis; calye 
fere 5-partito, laciniis ovatis acutis paullo ciliatis, 2-3 mm. longis; 
This species bears a superficial resemblance to M. viridis A. Nels. 
of the Lanceolatae, but that plant, in common with the other mem- 
bers of its section, has the corolla-tube pubescent within, the fila- 
ments as long as or longer than the anthers, and a very different 
root system. The very short filaments suggest a relationship to the 
Alpinae, but the long style, habit and aspect of the plant place it in 
the Oblongifoliae. It is to be regarded, perhaps, as a connecting 
link between these two sections. 7 
30. M. auprna (Torr.) G. Don, Gen. Syst. iv. 372 (1838). M. 
Tweedyi Rydb. Mem. N. Y. Bot. Gard. i. 336 (1901). M. obtusi- 
loba Rydb. Bull. Torr. Club xxviii. 32 (1901). M. brevistyla Wats., 
var. obtusiloba (Rydb.) A. Nels. in Coulter & Nelson Man. R. Mt. 
