REPORT ON THE BOTANY OE THE ATLANTIC ISLANDS. 43 



Rhacopilum gracile, Mitt. 



Rhacopilum yracile, Mitt, n. sp. 



Caulibus ramulosis laxe caespitosis gracilibus, foliis ut pluriruis assurgentibus pateutibus 

 ovali-lanceolatis nervo viridi in aristam viridem laevem producto inargine apicem versus 

 minutissiine crenulatis vel integerrirnis, cellulis parvis ovali-rotundis distinctis areolaris, 

 foliis stipulseforniiibus uiinoribus lanceolato-subulatis. 



Caulis inferne radiculosus. Folia viridia humida vix disticha sed patentia concava, 

 sicca appressa. 



Ascension. Moseley. 



Differs from Rhacopilum africanum, Mitt., and from Rhacopilum mucronatum, 

 Beauv., iu the leaves not being distichously explauate, in the areolation composed of more 

 distirict cells as well as in the more slender state of the entire moss. 



A. Richard (Sertum Astrolabiauum, pp. 51-52) enumerates the following mosses from 

 Ascension : — Dicranum Jiliforme, P. Beauv. (Dicranum capillaceum, Bridel), Dicranum 

 fragile, Hook., Hypnumf, Bartramia ?, Barbula jiexuosa, Bridel, and Barbula atlanticaf, 

 Bridel ; and brief diagnoses of the following proposed new species of mosses from Ascension 

 are published by Karl Miiller in Engler's Botanische Jahrbiicher (1884), v. pp. 83 and 84 : 

 Bryum (Eubryum) zygodcntoides ; Bryum (Apalodictyon) rubro-costatum ; Bryum (Argo- 

 bryum) argeiitatum ; Dicranum (Campylopus) naumanni; Bartramia (Philonotula) 

 subolescens ; Calymperes (Hyopholina) ascensionis; Barbula (Hyophiladelphus) leuco- 

 chlora ; Barbula (Hyophiladelphus) cuspidatissima ; Rhacopilum naumanni ; Ilookeria 

 (Callicostella) ascensionis. 



These mosses were collected by Dr Naumann, who was attached to the Prussian 

 "Gazelle" Transit Expedition. 



HEPATKLE. 

 Jungermannia biapiculata, Tayl. 



Jungermannia hiapiculata, Tayl. in Hook. Lond. Journ. Bot., 1845, p. 81 ; G. L. et N., Synop. 

 Hepat, p. 666. 



Ascension. — Endemic. Hooker. 



Jungermannia (Fegatella) limbata, Tayl. 



Jungermannia (Fegatella) limbata, Tayl. in Hook. Lond. Jotirn. Bot., 1845, p. 95. 



Ascension. 



