NEW SPECIES OF MUSCI. 59 



Pterogonium, Swartz. 



I. P. Jamesoni; caule laxe caespitoso, procumbente, pinnato; 

 ramis compressis, attenuatis, patentibus ; foliis imbricatis, 

 erecto-patentibus, elliptico-lanceolatis, eoncavis, enerviis, 

 subdenticulatis ; capsula lineari-cylindracea ; operculo 

 conico. — On Pichincha, near Quito, Prof. William Jame- 

 son, 1845. 



Perichaetium subulate, its leaves closely adpressed. Seta 

 very slender, pale green, at length pale brownish, arising 

 from the main stem. Calyptra dimidiate. Capsule elon- 

 gate, elliptico-cylindrical. Peristome of sixteen very short, 

 subtruncate teeth, incurved and marked with a line in the 

 axis. This has the complanate habit, and compressed and 

 attenuated branches so common among the Neckerce, but 

 very unusual among the Pterogonia. 



Neckera, Hedw. 



*• N. Jamesoni ; caule laxe caespitoso, procumbente, subbi- 

 pmnato ; surculis complanatis, foliis laxe imbricatis, erecto- 

 patentibus, oblongo-lanceolatis, undulatis, integerrimis, 

 enerviis, basi margine incurvo ; capsula late ovata ; seta 

 exserta, — On the Quitinian Andes, Prof. William Jame- 

 son, 1845. 



Perichaetium closely investing the base of the pedicel], the 

 exserted part of which is about the length of the capsule. 

 Exterior peristome of sixteen lanceolate, acuminate, trabecu- 

 le teeth, interior of very slender filiform articulate laciniae 

 connected at their bases by a short membrane. This 

 approaches very near to N. Douglasii, Hook. It differs by 

 Its greener colour, its entire leaves, which are more gra- 

 dually acuminated, and by the top of the perichaetium not 

 reaching to the base of the capsule. 



*• N. luteo-virens ; caule laxe caespitoso, erecto, subbipin- 

 nato ; surculis compressis, erecto-patentibus j foliis imbri- 

 catis, erectiusculis, siccitate, crispis, ovatis, longius acumi- 



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