30 THE VOYAGE OF H.M.S. CHALLENGER. 



the widely-spread and variable Cardamine hirsuta. The former was founded on a Chilian 

 plant collected at Talcagua, and is not different from plants named Cardamine nasturtioides 

 in the Kew Herbarium. In a broad sense a number of the South American forms of 

 Cardamine belong to Cardamine hirsuta, which is also represented in Australia and New 

 Zealand by at least an equal series of varieties. The Tristan da Cunha Cardamine pro- 

 pinqua of Carmichael (Trans. Linn. Soc. Lond., xii. p. 507) would appear to be the same 

 as Cardamine flaccida, for since writing the account of the botany of the Tristan group, 

 we have seen a specimen of a Cardamine raised by Mr Mitten from seed in the earth 

 attached to some of the mosses brought home by Mr Moseley, which is exactly like the 

 Cardamine collected in Juan Fernandez by Douglas and Moseley. Of course, there is 

 just the possibility of an error in the origin of Mr Mitten's plant, which he sent to Kew 

 with the following note : — "I shook out all the dust from the Tristan da Cunha mosses, 

 and have raised therefrom a Cardamine very like the Azoric Cardamine caldeirarum." 

 The last named is a critical species of the Cardamine hirsuta type, and said to be most 

 nearly allied to Cardamine sylvatica, which in its turn is at most a sylvan subspecies of 

 Cardamine hirsuta. Carmichael compares his plant with Cardamine antiscorbutica, 

 Banks, which is reduced in Hooker's Flora Antarctica to Cardamine hirsuta, as is also 

 Cardamine propinqua. "Whatever rank be assigned to these southern forms of Carda- 

 mine, the presence of one in the Tristan da Cunha group merely counts as an additional 

 species of a type common to the American and Australasian regions. 



BIXINE^E. 

 Azara fernandeziana, Gay. 



Azara fernandeziana, Gay, Fl. Chil., i. p. 196; Philippi in Bot. Zeit., 1S56, p. G27. 



Juan Fernandez. — Endemic. In woods on the higher mountains — Bertero, 1436 : 

 without locality — Reed. 



Allied to the common Chilian Azara serrata, Ruiz and Pavon, and apparently rare. 

 Excluding a doubtful "West Indian plant, and another Mexican one, Azara is restricted 

 to Chili, and consists of about a dozen species. 



CARYOPHYLLE^E. 

 Stellaria cuspidata, Willd. 



Stellaria cuspidata, Willd. ; DC, Prodr., i. p. 396; Gay, FL Chil., i. p. 264. 



Juan Fernandez. — In moist woods of the higher mountains — Bertero; Reed; 

 Moseley. 



Common in Western America from Mexico to Chili. This is very near to, if not the 

 same as, the European Stellaria nemorum. 



