io6 ANNALS OF SCOTTISH NATURAL HISTORY 



obtusis, apice planis amplexicaulibus ; stipulis truncatis, com- 

 planitis, caule adpressis, Wolfg. Ms. No. 22. Besser in lift. 



" Differt a P. crispo foliis longioribus, majoribus integer- 

 rimis nee crispatis, nee serrulatis, colore atroviride, et venis 

 non convergentibus, sed transversim reticulato-strictis, Wolf. 



" In specim. nostro flores desunt, folia 4-5 poll. \-\ poll, 

 lata, majora quam in crispo, quidquam undulata, 5-7-nervia, 

 nervis 3 fortioribus. Maxime sane affinio P. crispo." Roem. 

 et Sch. I.e. 



The distribution of the plant is 



Denmark. River Gudenaa. Jylland ! Baagoe. 



Nilso-Ribe. Jylland ! 



Vigersdal. Sjaelland ! 



Lithuania. In fluvio Wahu, Wilna, Besser ! and 



Wolfgang ! 

 W. Prussia. Dlugi See, Kreis Kartham, Caspary ! 



Glembohi See. 

 E. Prussia. Berent. Neustadt. Schwetz. Nei- 



denburg and Allenstein. 

 Sch. Holstein. Ascherson and Graebner, I.e., but not 



mentioned by Prahl., " Krit. Fl. Holst- 



Sch." 1890. 



The finest specimens I have seen are those in the 

 herbarium of M. Casimir de Candolle, gathered by Besser. 



I may say that Mr. Baagoe's excellent paper is in 

 English as well as Danish. 



POTAMOGETON MACVICARII, MIHI, P. PRO- 

 LONG US x P. POLYGONIFOLIUS, A NEW 



HYBRID. 



By ARTHUR BENNETT. 



IN the year 1897 Mr. Symers M. Macvicar sent me a series 

 of gatherings of Potanwgeton specimens from the West of 

 Scotland (Moidart, etc., in Argyllshire). Among them were 

 specimens from Ardnamurchan named 



" P. prczlongus (leaves hooded when fresh). 25.8.1897." 



