44 CRYPTOGAMIA MUSCL 



4. P. alpinum, stem branched ; leaves rigid, lanceolate-subulate, 

 with serrated nearly plane margins ; capsule ovate, with an indis- 

 tinct apophysis ; lid with a subulate point. 



flab. On Cheviot, Winch. June. 



5. P. urnigerum, stem branched, fastigiate; leaves erecto-pa- 

 tent, lanceolate, serrated, upper ones glaucous-green ; fruitstalks 

 1 4 inch ; capsule erect, cylindraceous, without an apophysis ; lid 

 with a short incurved point. 



Hab. Roadside between Foulden and Hutton-Mill, plenti- 

 ful, Rev. A. Baird. Dec. 



This moss rarely occurs in a station so little elevated, the 

 above being not more than 100 feet above the level of the 

 sea. 



6. P. aloides, stem short, simple ; leaves rigid, linear-lanceolate, 

 with plane serrated margins ; capsule cylindraceous, nearly erect, 

 without an apophysis : lid with a curved subulate point. 



Hab. Moist gravel banks on heaths, not uncommon. On 

 a bank near Renton Inn in great plenty and perfection. 

 "Winter. 



The banks on which this species grows are often partially 

 covered with a green velvet-like layer of vegetation, which 

 the magnifier discovers to consist of irregularly branched 

 filaments, obscurely jointed like a Conferva. It is in fact 

 the Conferva velutina of some botanists, (Dillw. Conf. tab. 

 770? but proved, by Dr DRUMMOND, to be nothing more 

 than P. aloides in its earliest stage. The Conferva velutina 

 of SMITH in Eng. Botany may be different, and possibly a 

 perfect plant. 



7. P. nanum, stem very short, simple ; leaves rigid, linear-lanceo- 

 late, rather obtuse, serrated towards the end ; capsule subglobose, 

 nearly erect, without an apophysis. 



Hab. Moist gravel banks, frequent. Summer. 



* * Calyptra naked. 



8. P. undulatum, stem nearly simple ; leaves membranous, lan- 

 ceolate, undulate, plane, serrated, crisped when dry ; capsule cer- 

 nuous, cylindrical ; lid subulate. > 



Hab. Woods and hedge banks, very common, producing 

 fruit copiously in winter and early spring. 



