BOTANY 



N.; R. affints, Wh. & N.; with forms of R. imbricatus, Hort; R. 

 eryf&rinus, Genev. ; and R. incurvatus, Bab., are fairly frequent and locally 

 abundant. 



CRYPTOGAMEjE VASCULARES 

 LYCOPODIACEJE 



Three species of this order are found in the county. Of these the 

 peat-loving clubmoss (L. inundatum) is the commonest. It has been 

 found in all of the districts except Medway, and is particularly abundant 

 on the heaths and moors of the western part of Surrey. The common 

 clubmoss (L. clavatum) occurs in about six of the districts, and is de- 

 cidedly uncommon, while the fir clubmoss (L. Selago) is rare. It has 

 been found in about half of the districts, but it occurs very sparingly 

 where I have seen it. The following is a list of the species : 



Lycopodium clavatum, L. L. inundatum, L. L. Selago, L. 



EQUISETACE^E 



Eleven species of horsetail are found in Great Britain, and of these 

 Surrey possesses seven, of which one is of special interest. Of the others 

 Eq. arvense and Eq. limosum are very common, Eq. maximum and Eqs 

 palustre considerably less so. The wood horsetail (Eq. sylvaticum) occurt 

 in about half of the districts but is not common ; it may be seen in grea- 

 beauty and profusion on the railway banks between Witley and Hasle, 

 mere, and in some of the adjoining woods. The Dutch rush is very rare, 

 having been found in only two districts. The remaining species, Eq. 

 titora/e, has been briefly referred to before. It grows in plenty on the 

 curious sand-covered bog on Bisley Common, and in one or two peaty 

 places close at hand. This plant, by many regarded as a hybrid (Eg. 

 arvense and limosum) , is not known to occur elsewhere in Britain. It is 

 sparsely scattered over a considerable part of Europe and is also found in 

 North America. The following is a list of the species : 



Equisetum maximum, Lam. Equisetum litorale, Kuhl. 



arvense, L. limosum, L. 



sylvaticum, L. hyemale, L. 



palustre, L. 



MARSILEACE^ 



The pillwort (Pilularia globulifera), the only species of this order 

 found in Britain, is a curious little creeping herb with erect, rush-like 

 leaves 3-4 inches long, at the base of which are found the round capsules 

 from which the plant derives its name. It is not very uncommon about 

 margins of ponds, but is easily overlooked. It grows in a number of 

 localities extending over five or six of the districts. 



i 49 B 



