-.911-12.] BOTANICAL SOCIETY OF EDINBURGH 23 



mud with a sward, but their further development in an 

 aerial environment is restrained/ 



6. GeratophyUum demerstvm, L. — Not from any sub- 

 merged point, but as a remarkable instance of distribution. 

 I mention this. In the whole of the Loch Ness area, the 

 island of Lismore,. and Nairn : then in Kirkcudbright. 

 Wigtown. Fife, and Kinross (140 lochs > T only once did 

 Mr. West collect this species. In Otterston Loch < Filet 

 •■ it grows in such extraordinary abundance that in many 

 places a boat can only be rowed through it with difficulty. 

 This I have experienced in Norfolk, where in Blacktleet 

 Broad it was impossible to force the boat through it ; it there 

 grew intermingled with Chora polyaca/ntha in thick mass - 



7. Jv/ncus 8upinu8, Moench. — In this we have another 

 species that passes from a strictly terrestrial form through 

 many phases to an extreme one in var. fiu/Uams. I have 

 not been able to absolutely trace the submerged form to a 

 terrestrial form, and cultivation is required here, which is 

 just what Dr. Gliick is doing at Heidelberg. We seem to 

 posses- — 



1 1 i The type as var. nodo8U8 } Lange. 



(2) var. pygmcBUS, Mai-son. : "Canle 1-2 poUicari; 

 anthela depauperata 1-2 cephala.'" 



(3) var. uligino8U8, Fries. 



(4) Kochii, Bab. 



[11 'it a-< i Wulf. ). 



i 6 i flv/Uans, Wi 



What must be a remarkable form is J. conferva* 

 St. Lager. "Cat bass. Rhone" 74:' (1882)=/. 

 Buchenau. in "Fl. N.W. Tiefeb." 136 (1894> 



Mr. West has a very interesting note on these forms at 

 p. 976 (No. 1). Tt is too long to extract, but two remarks 

 may be quoted : " This is one of the most protean species 

 imaginable." " These forms are of extreme interest : in them 

 we seem to be able to trace the phylogenesis of an extremely 

 abundant and dominant aquatic plant : from plastic ter- 

 restrial and subaquatic forms ; not now dominant nor 

 abundant in this district." 



From Rora Moss, Longside. V.C. 93. X. Aberdeen. Dr. 

 Trail has sent me a specimen named var. comosus, Breb. 

 1 " Flora Xeu-Vorpommern." p. 456, 1869. 



