The Scottish Naturalist. 313 



Butomus umbellatus, 88, "probably native.'' 



Triglochin maritimum, 74, 97, 5 ; T. palustre, 74, 5, 7 Miller. 



Scheuchzeria palustris, 88, '' probably extinct." 



Under the genus Potamogeton, I have enumerated all the 

 counties and vice-counties from which I have seen specimens, 

 putting those not recorded in " Top. Botany " in italics, with the 

 names of the collectors of the specimens seen by me from each of 

 the latter. 



Potamogeton pectinatus, 80 Brotherston, 83, 84, 95, 9, n ; 

 P. filiformis, 81, 83, 85, 88 Sturrock, 90, 06 Graces, 8, 9 ; P. 

 pusillus, 72, 73, 74, 76, 77, 80, 81, 82, 83, 85, 87, 88, F. B. 

 White, 89, 90, 91, 92, 98 Bailey, 99, 100 Hunt, 9, 11 ; P. cora- 

 pressus, 73, 77 in Herb. Trin. Coll., Dublin, 8^, 90, 99 ; P. 

 obtusifolius, 72 Fingland, 73, 80, 81, 82, 87, 88, 89, 90, 91, 

 92 Trail ; P. zosterifolius, 90 {any information regarding this as 

 a Perthshire plant will be acceptable to Dr. Buchanan White 

 and to myself); P. crispus, 72, 73, 74 Druce, 76, 80, 81, 82, 83, 

 85, 86 Coles, 88, 89, 90, 92, 9, 11 ; P. perfoliatus, 73, 76, 79 

 Brotherston, 80, 81, 84 Webb, 85, 87, 88, 89, 90, 92, 95, 96 

 Stables, in Glasgow Herb., 7, 8, 9, 11, 12 ; P. lucens, 80, 81, 83, 

 85, 87, 88, 89, 90, 98 ; P. decipiens, 80, 81, 88 Sturrock, 90 ; P. 

 pnelongus, 73, 80, 85, 88 Linton, at 2500 feet, 8g, 90, 96, 4 Grieve 

 (Isle of Rum), 9; P. heterophyllus, 72, 73, 74, 79, 81, 85, 87, 88, 

 89, 90, 92, 93, 94 Miller, 95, 96, 98, 100, 8, 9, n ; P. mtens, 88, 

 89, 90, 92, 8 Hanbury, 11 ; P. Zizii, 73, 79, 80, 89, 90 (87, "no 

 record," F. B. White); P. rufescens, 72, 73, 7 4 Druce, 77, 81 >. 

 Benton ! 83, 85, 87 F. B. White, 88, 89, 90, 92, 93, 100 Hunt, 

 in Dr. Moore's Herb., 9 ; P. natans (true), 74 Druce, 76, 77, 80, 

 81, 82, 83, 8Jf A. C. Christie, 85, 87, 88, 89, 90, 91, 92, 93, 98 

 Bailey, 100, 6 Bailey, 7 Grant, 8, 9, 11, 12; P. polygonifolius. 

 78, 74 Bailey, 81, 83, 85, 87, 88, 89, 90, 91, 92, 93, 96, 97 

 Linton, 98, 100, 4, 5 Bailey, 6 Druce, 8, 9, 11, 12 ; P. planta- 

 gineus, 72 F. B. White, 80 Brotherston, 82, 100. 



Zanichellia palustris, 88; Z. pedicellata, 90 Druce. lt.C, IS83. 



Zostera marina, 74, 5. 



Naias flexilis, 88, should be sought elsewhere also in deep 

 lochs, and will almost certainly be found in them. Last autumn 

 it was discovered near Killarney by the Rev. E. F. Linton. 



Lemna minor, 74, 88, 89, 5. 



Arum maculatum, 88 f, 89 f. 



