1869.] LAWSON — ON MYOSOTIS. 405 



31. sihirica, var. paniculata. Shoi'es of the great Lakes, &c. ; 

 Hudson's Bay — Gillespie, sp. ; Fort Simpson, 1853 ; between 

 York Factory and Norway Hoase; Youcon River; Lake Superior; 

 York Factory — Governor McTavish. The specimens vary very 

 much in size, breadth of leaves, hairiness, roughness, &c. 



Dr. Hooker observes that Mertensia pllosa D. C, which in- 

 cludes Lith. corijmhosum Lehm., and pan Iculatum Don, is clearly 

 referable to denticulata Don, the hairy calyx being a very incon- 

 stant character. These, he suggests, should all be united under 

 sibinai. ; and in reference to M. Drummondii Don he finds no 

 plicEe in the tube of the corolla, whence it must be associated 

 with Virgmlca, of which it appears to be a northern form, but it 

 has not been gathered anywhere between the Arctic Sea Coast 

 and the United States 31. Virginica is a southern plant 

 extending from New York and Wisconsin to South Carolina and 

 Tennessee. 



. The following remain to be identified with described forms. 

 The first is a variety of pinicidafa ; the second is very different 

 in aspect : 



1. Leaves narrow, linear-lanceolate; sepals narrow, ciliate on 

 the margins; otherwise glabrous. West of Rocky Mountains, 

 say from Fort Youcon to Lapierre's House, W. J. H. — Governor 

 McTavish, sp. A small plant ; leaves bright green, with very 

 few rough points. 



2. Leaves orbicular to very broadly ovate, with very short 

 hairs, but quite rough all over with hair bulbs, and perfectly 

 glaucous ; sepals externally glabrous, except at the margins. 

 Youcon — Governor McTavi-h. A robust, large-leaved plant, as 

 glaucous as M. maritima, but with the flowers, &c., of the 

 Sibirica group. 



Echinospennam Lappida, Lehm. Naturalized from Europe. 

 Hinchinbrook, July, 1862 — G. L. So common throughout some 

 of the settled portions of Ontario that botanists have neglected to 

 note its distribution, or to collect many specimens ; but rare or 

 absent over a large portion of the Maritime Provinces. (Ac- 

 cording to Wood it extends to Arctic America, but probably he 

 refers to another form.) This is a rare plant in Britain, found 

 in only one locality in the South of England. Provancher notices 

 it as extending to Carolina, which must be a mistake, as there is 

 no notice of it in " Chapman's Flora." Kegel & Herder, in 

 ^' Plantae Semenovianse," 1869, p. 31, describe two varieties, viz. : 



