312 TRANSACTIONS OF THE [Sbss. lxxxiii 



Arrhcnatherum clatius, M. et K., var. bulbosum, Presl. 

 — Near Reay. E. S. Marshall sp. 



A. precatorium, Dietrich. — Lower Dounreay. Marsliall, 

 Jour. Bot, 169 (1916). 



Gatahrosa aquatica, Beau v., var. — Vv^et sand, Duiinet 

 Bay. E. S. Marshall sp. " Annual prostrate, etc." I can 

 find no record of an annual form of this species. 



Chara hispida, Linn. — Pond, east of Reay. E. S. 

 :\rarshall, Jour, of Bot., 169 (1916). 



Notwithstanding Mr. Crauipton had access to all parts 

 of the county, being on the Geological Survey, he missed 

 Mr. Lillie's records of Saxifraga Hirculus, Linn, and 

 Atriplex laciniafa, Linn. 



The latter name is the one used in the last edition of 

 the London Catalogue, but it certainly is a bad name as 

 the leaves are never laclnlate, but Dumortier's name A. 

 farinosa (1827) is preoccupied by that of Forskill (1775), 

 and Woods' name of (i.rendria by that of Nuttall (IcSLS). 

 Even with the account in the Cambridge Flora of the 

 genus, I think our plants are by no means settled. 



POTAMOGETON LONGIFOLIUS, GaV, IN ENGLAND. 



By Arthur Bennett, A.L.S. 



(Read 4th DecPiiiher 1918.) 



Potamogeton longifolius, Gay, in Poir. Ency. Meth., 

 supp. iv, 535 (1816). 



1\ lucen.% Linn., b. longifolius, DC. Fl. Fr., v,311 (1815). 



P. mdcrophyllus, Wolfg., in R. et S. Syst. N. Mant., iii, 

 858(1827). 



P. lucens, Linn,, b. jiuitaw^, Coss. et Germ., Fl. Paris, 

 574 (1845). 



P. lucens, subsp. maerophyllu-^, Wolfg., Nyman Consp. 

 Fl. Europe, 682 (1882). 



P. lucerne, subsp. longifolius, Magnin, lUill. Soc. bot. Fr., 

 440 (1896). 



/-*. lucens, subsp. TUdcrophyllus, Hags., in Neuman's Sver. 

 Fl., 797 (1901). 



