Enumeration of Plants of the Rocky Mountains. 255 



284. Mertensia alpina, Don. ; a loosely paniculate, branching, evolute 

 variety. " Common in the valley of Clear Creek, on gravelly banks, 

 growing in irregular clumps, 12 to 18 inches high ; flowers dull blue, in 

 May and June."* 



286. Mertensia Sibirica, Don. pro parte. Pulmonaria Sibtrica, Linn. 

 & Pursh, quoad syn. Grael. Lithospermum dentkulatum, Lehm. Asperif, 

 L. Sibiricum, Ledeb. Fl. Alt., & Ic. PI. Fl. Ross. t. 207. Pulmonaria 

 denticulata, Eoem. & Schult., Cham., &c. Mertensia denticulata, Don., 

 DC, Ledeb. Fl. Ross. Pulmonaria ciliata, James, Torr, in Ann. Lye. 

 N. Y. 2, p. 224. Mertensia ciliata, Don., &c. Besides the greater 

 smoothness, which is variable, this is distinguished from M. panicvlata 

 by the much shorter and blunt segments of the calyx, and the leaves 

 are glaucescent beneath. No doubt the Linnsean name must be re- 

 stored to this (the Pulmonaria Sibirica of Pallas resuming the name of 

 M. Pallasii, Don.) ; for it is clearly the plant of Linnaeus, and perhaps 

 Pursh's fi-om Canada (but more probably that is M. paniculata), and I 

 suspect that Lehmann described his Lith. denticulatum from Siberian 

 specimens. Certainly it is not known from Eastern " North America," 

 unless from Labrador. H. Engelmann gathered it at Bridger's Pass in 

 toe Rocky Mountains, but my specimens have M. paniculata intermixed. 

 ■Kedowskian specimens from Kamtschatka, distributed by Charaisso, are 

 of the present species. It is, writes Dr. Parry, "the common brook- 

 side Mertensia, found everywhere along the margins of ice-cold, dashing 

 streams, up to the snow-line, delighting in situations where its pale 

 foliage and delicate blue flowers are bathed in the spray. It grows to 

 the height of 1^ to 3 feet; the stems succulent, the lower radical leaves 

 ^rge and cordate." 



286. Mertensia paniculata, Don. A reduced and alpine, glabrate 

 state, with much less acute leaves, of that form oi M. paniculata which 

 answers to Pulmonaria lanceolata, Pursh, and P. marginata, Nutt. {M. 

 ^arginata, Don., and M. lanceolata, DC.) " Moist, grassy places, on the 

 slopes of alpine ridges; flowers bright alpine blue." M. paniculata 

 ranges from Hudson's Bay to Lake Superior, New Mexico above Santa 

 f^e (626, Fendler) and northwestward. The foliage, calyxes, &c., vary, 

 3s in other species, from smooth or glabrous to hirsute, but the narrow 

 and acute segments of the deeply 6-parted calyx are always hispid-ciliate. 

 "obviously includes M. corymbosa and M. pilosa, Don., the Litkosper- 

 "'"w corymbosum of Lehmann. Dr. Hooker has not seized the charac- 

 ters which distinguish the species from the foregoing. 



287. Mertensia alpina, Don. Pulmonaria alpina, Torr. in Ann. Lye. 

 ^- Y. " The small-flowered alpine Mertensia ; flowers dull blue. 



288. Eritrichium glomeratum,BC. Very fine specimens "Common 

 ^ gravelly hill-sides and rocky places from the foot of the mountains 

 «> the upper valleys." 



289. Phm:elia circinata, Jacq. 



^^^. Echinospermum Jloribundum, Lehm. In fruit. 

 ^^\£ritrichium crassisepalum, Torr. & Gray, in Pacif. R.R. Exped. 

 ^1 P- 171. A young state, with broad leaves. 



