Bennett: Notes on the Potamogetons. 



75 



Sheet No. ii (three specimens). 



' I. Ditches in marshy ground near Beverley. Mr. R. Tees- 

 dale. 



'''Jiuitcuis, Roth ex descrip. 



P.fluitafis, Eng. Bot., V. i8, t. 1286.' 



These are P. alpinus Balb. = P. riifescens Schrad. 



Sheet No. 19 (three specimens). 



'2. Beverley, Yorkshire. Mr. R. Teesdale, 1798. 



" P. gramineurn "' = /'. obtusifoliiis Mert. & Koch. 



Sheet No. 20 (five specimens). 



One of these, marked ' 2 ' is labelled ' P. ctispidatus, Fl. 

 Germ.' ' Germany, Schrader.' This specimen is P. aciLtifolius 

 Link. 



Three other specimens are from ' Beverley, Yorkshire. Mr. 

 R. Teesdale. July 1798. " compressiis.'" ' These are P. 

 acutifolius Link., and are named ^ cojnpressns'' in Teesdale's 

 paper in the Trans. Linn. Soc, IL, 106, 1792. The other 

 specimen is P. zosterifolius Schum. from ' a rivulet, Hovingham.' 

 So that the record of zosterifolins from * Baines' Flora ' (there 

 under the name of covipresstis) , in the ' Flora of the East Riding 

 of Yorkshire,' p. 195, needs altering to P. acutifolius. This 

 gives the V.C. 61 for that species, and it was that to which my 

 note referred ; the record of 62, N.E. York? " reported,"' I do 

 not know the source of, unless it was a confusion with the 

 Ripon Flora report. 



Sheet No. 24 (four specimens). 



I. Near Beverley. Mr. Teesdale. 



I. This is different to the P. pusillwn, and yet it does not 

 agree with the description of the P. setaceum as Linn. ! says 

 * fols. oppositis,' adding, 'in this plant the upper leaves are only 

 so.' 



Three specimens of P. pusilliLS L. in no way different to the 

 ordinary plant. 



Sheet No. 28 (four specimens). 



' 2. Ditches near the sea, Yorkshire. Mr. R. Teesdale. 

 1794. No. II. P. pectinatus Fl. Brit.' 

 \s P. pectinatus L. 

 Sheet No. 31 (one specimen). 



* In salt water ditches at Hornsea. I have always considered 

 this as different from the others in the same way. It is well 

 figured in '\''aill,' t. 32 (I believe fig. 3).' 



* In a different handwriting-. 



1904 March i. 



