42i 2S. AllNICA .MONTANA. [cL. XIX. 



yellow cylinder of antlierae surrounds the pistillum, Avhich 

 here, as in the ray-florets, is divided. The receptacle is fur- 

 nished v'ith short cilia. The fruit is an angular caryopsis, 

 of which the inferior umbilicus is furnished with a persistent 

 funiculits umbilicaUs. The caryopses are provided with sharp 

 cilia, and have a sharp-haired pappus. 



Diagnvs'is and Affinity. 



There is a distinct variety of this plant, with small 

 lanceolate leaves, which is figured in the Fl. Dan. 1524. 

 yis the Arnica angustifolia Vahl. of Greenland. Linnaeus 

 (Fl. Lappon. n. 305.) mentions the same plant under Doro- 

 oiicwn foUis lanccolatis^ and maintains that it is a peculiar spe- 

 cies. But he cites, at the same time, Doromcum IV. Clus. 

 Pannon. 5S2. and Alisma MatthioU J. Bauh. Hist. 3. 20, 

 both of which figures perfectly correspond with our A. mon- 

 iana. Chryscmtlievium laUfoliuvi mbius Ger. Emac. 742. 

 might also be mentioned on the same occasion. In the later 

 editions of the Species Phmtarum this plant is mentioned in 

 the Flora of Lapland, as a variety of A. montana. Nut- 

 tall (Amer. Plants, 2. 164.) also recognises A.fidgens scad. 

 j)Iantogincce Pursh, as varieties which grow in Labrador, 

 and on the Missouri. The former small-leaved species is 

 mentioned by Linnaeus in a letter to J. G. Gmelin (Fl. Sib. 

 2. 153.) as a variety, produced by its situation on high moun- 

 tains. That which bears the greatest resemblance to our 

 plant is A. chronicumy which is distinguished, however, by the 

 alternate position and dentated margin of its upper leaves. 

 The genus Arnica is in other respects difficult to be distinguish- 

 ed from Doromcum^ for both have a double row of leaflets in 

 the calyx, both have a hairy receptacle, abortive filaments in 

 the ligulate florets, and a pappus with sharp-pointed hairs. The 

 only difference is, that in Doromcum the marginal seeds have 

 no pappus. Doronicum plantagineum, which is very like our 

 plant, is distinguished from it, partly by the generic charac- 

 ter, partly by the alternate, imperfectly dentated teeth, and, 

 by the pale yellow, almost inodorous flowers 



