from the shores of Davis^ Straits, 173 



ing to connate, each almost an inch long, triangular, acute, 

 broadish at the base ; above the middle of the scape are produced 

 two other leaves, alternate, of the same form, smaller in size, 

 the lower being rather the larger, distant from each other about 

 the third part of an inch, each Ijeing amplexicaul in the same 

 degree as the two opposite leaves beneath. The leaves are ribbed. 

 In one of the specimens these upper leaves are wanting, and in 

 another they are opposite, like those below. The scape has a 

 jointed appearance at the origin of the opposite leaves, and is 

 somewhat inflated just below the flower. It is shghtly striated 

 and clothed, as the leaves also are, with soft hairs varying in 

 length. The receptacle is round, slightly convex, distinctly 

 pitted, the apertures minute but deep, of two sizes with a raised 

 narrow margin, which is fringed with an evident pubescence. In 

 the Linnsean definition of the genus Arnica, which has been fol- 

 lowed by most authorities, the receptacle is represented as naked ; 

 but DeCandoUe says, ^^ receptaculum fimbrilliferum pilosiuscu- 

 lum,^^ as exhibited in these Arctic specimens. The leaflets of the 

 involucrum are in two rows, eleven in the outer row, eight in the 

 inner ; those of the outer row ovate-lanceolate, nearly uniform ; 

 those in the inner less regular, some being of the same form and 

 size with the outer leaflets, while others are narrower and even 

 shorter. The outer leaflets are near half an inch long, more 

 hairy on their external surface than the scape, their outer sur- 

 face and both surfaces of the inner leaflets being less hairy. The 

 leaflets in both rows are deeply concave on their inner aspect, or 

 rather carinate, with a middle rib. The ligulate florets are few 

 compared with the number of tubular florets in the disc. They 

 stand in a single row, and being eight in number, one seems to 

 correspond with each of the inner leaflets of the involucrum. The 

 pits or apertures in the receptacle answering to the insertion of 

 these ligulate florets are wider than those from which the bases of 

 the tubular florets arise, with the exception of two pits near the 

 centre, which have the same diameter as those around its border. 

 The ligulate florets are rather large and conspicuous, being an 

 inch in height from the receptacle ; the lamina is broad, marked 

 with several prominent, nearly parallel nerves, which branch off 

 to bound the margins of the terminal teeth. The tubular florets 

 are short, intermixed with the abundant pappus and overtopped 

 by it : these are five-toothed. The style is forked in the florets 

 of both disc and ray, the branches being long and pubescent, a 

 part of DeCandoUe's character of the genus Arnica, The pap- 

 pus is scabrous, the achenium hairy. 



Ericace^. — The Ledum palustre. 



MoNOTROPE^. — The Pyrola rotundifolia, 



ScrophularinejE. — There are several specimens of Pedicu* 



