06 NEW SPECIES OF MUSCT. 



peristome of sixteen trabeculate teeth, inner of as many 

 foraminulose lacinise with single filiform processes interposed. 

 It is like some states of H. prolongum, Linn., but the 

 ultimate branches are more slender, the cauline leaves 

 squarrose, their nerve reaching only half way to their 

 summits and the setae are smooth. 



Daltonia, Hook, et Tayl., (annuente atque emendante 

 Bridelio.) 



1 . D. oralis ; caule ceespitoso, erecto ; ramis compressis ; 

 foliis imbricatis, erectis, oblongo-lanceolatis, apiculatis, 

 canaliculars, substriatis, uninerviis, margine reflexis, inte- 

 gerrimis ; seta scabra ; capsula ovali, apophysi minuta ; 

 operculo longirostro. — On trunks of trees, on Cayambe, 

 at an elevation of about 14,000 feet, 20 Oct., 182J, Prof. 

 William Jameson, (Dr. Greville's Herbarium). 

 Shoots of a golden yellow, shining, about 1 inch high and 

 l-10th of an inch wide. Calyptra entire, ciliated at the base. 

 Outer peristome of sixteen lanceolate-acuminate, barred 

 teeth, inner of as many white, filiform, imperforate, articu- 

 lated laciniee, variously twisted after the fall of the lid. 

 Nerve of the leaf very slender, vanishing before reaching the 

 point. This differs from D. splachnoides, H. et T., by the 

 greater size, wider leaves with stronger nerves, and by the 

 capsule more contracted at the mouth. It must be con- 

 fessed, however, that the two species approach very closely. 



Fissidens, Hedw. 



1. F. pygmaus; caule aggregato, erecto, simplici; foliis 

 erecto-patentibus, infra laxis, apice confertis 7-8-j u gi s > 

 oblongis, obtusissimis, nervo apiculatis, integerrimis, ina- 

 marginatis, lamina dorsali acuta, supra basin desinente ; 

 perichaetio (seu caule fertili) radicali, breviore, ejus foln s 

 erectis, adpressis, amplexantibus, acuminatis, 2-3-jugis; 

 seta subflexuosa ; capsula erecta, ovata ; operculo rostrato. 

 Swan River, Mr. James Drummond. 



