234 Dr. Hooker and Dr. Greville on the Genus Hookeria 



the names of Leskea tamariscina and L. rotulata. The appellation ta- 

 mariscina, (or rather Tamarisci, as Swartz has it,) was first established 

 by that author upon a Jamaica plant, which we have clearly ascertained 

 from his own specimens, as well as description, to be synonymous with 

 the L. roiulata of Hedwig. On the other hand, Hedwig, taking his re- 

 presentation and account from an Australasian plant, which had been 

 given him, we suspect, by Dickson, has a totally different species. By 

 right of priority, therefore, the name of Tamarisci should be applied to 

 L. rotulata. But we consider the Hedwigian tamariscina to be so well 

 established, and so generally known by the excellent figure given in the 

 Species Muscorum, that the general adoption of it will prevent confu- 

 sion. Sir J. E. Smith, under his H. tamariscina, has included Swartz's 

 Jamaica plant, and another species allied to it from the Cape of Good 

 Hope, which we shall presently have occasion to describe j and he seems 

 to us to have made his description from the West Indian individual, 

 which is our H. rotulata ; but he has referred to the plate of the Hed- 

 wigian tamariscina. Our valued friend is, therefore, strictly correct in 

 regard to the name ; and he has made the observation, that he was un- 

 able to discover the bristles mentioned by Hedwig, which only belong to 

 H. tamariscina. 



29- H. tamariscina, foliis bifariis oblique ovatis margini- 

 bus denticulatis nervo infra apicem evanescente, stipulis ova- 

 to-acuminatis marginatis laciniato-serratis, processibus seta- 

 ceis in axillis foliorum, " capsulis ovatis pendulis." Hedw. 



Leskea tamariscina, Hedw. Sp. Muse. p. 212. t. 51. 



Hypnum Tamarisci, Schwaegr. Suppl. v. 2. p. 182. (but not H. Ta- 

 marisci of Swartz, nor Hookeria tamariscina of Smith.) 



Pterygophyllum Tamarisci, Brid. Meth. Muse. p. 151. 



Hab. South Sea Islands, received from Mr. Dickson. 



This most remarkable species, as far as our observation extends, con- 

 stantly possesses the axillary setaceous processes described and figured 

 by Hedwig. These may probably be regarded in the light of abortive 

 leaves, of which the nerve alone has been developed. 



We have endeavoured to clear up the obscurity in which the present 

 and the last-mentioned species have been involved, in our description of 

 H. rotulata, and we have there stated our reasons for retaining their pre- 

 sent appellations. 



30. H. laricina, caule erecto inferne denudato, apice pin- 

 natini ramoso, foliis oblique ovatis submarginatis denticula- 

 tis basi uninervibus, stipulis cordatis breviter acuminatis ser- 

 ratis nervo perbrevi, capsula ovata nutante, operculo rostro 

 curvato. 



H. laricina, Hooker, Muse. Exot. t. 35. 

 Hypnum laricinum, Humb. et Kunth. Syn. PI. v. 1. p. 62. 

 Hab. Cape of Good Hope, A. Menzies, Esq. Mountains of the An- 

 des, Humboldt. 



