1 62 FLORA OF DUMFRIESSHIRE. 



Zostera marina. Linn. (Grasswrack). 



Records: Kcd.—C.. N. Lloyd, 1837. Wgt.—G. C. Druce, 1883. 



Localities : Along the shore — Kirkcudbright Bay, G. N. Lk, P. Gr.; 

 Dee and Urr mouth, J. M'A.; Auchencraig, J. C. W., between Arbig- 

 land and Southerness, J. Fr. 



Zostera nana. Roth. 



Record: Kcd. — Professor OUver, 1887. 



Ruppia maritima. Linn. 



Records: 1608. SpiraHs (fide]. M'Andrew), Xcd.—G. N. Lloyd, 

 1837. IVgf. — Greville, Herbarium, 1836. 



Localities : Along the shore — Lochryan, Stranraer, Grev.; Kirkcud- 

 bright, G. N. Lk; Lot's Wife, Sandyhills, Douglas Hall, Gillfoot, P. Gr., 

 J. M'A. 



Potamogeton natans. Linn.* 



Records: Dfs. and Kcd.—"^. Gray, 1850. Wgt.—G. C. Druce, 

 1883. 



Locality : Very common in all the valleys. 



Appears June 14. In ditches, low streams, often on wet mud. 



Potamogeton polygonifolius. Pourr. 



Records: Dfs.—]. T. Johnstone, 1891. Kcd. — J. M'Andrew, 

 1882. Wgt.—V>x Arnott, 1848. 



Localities : Annandale — ^Lochmaben, G. Bk, S.-E.; common at 

 Moffat, J. T. J. 



Much deeper water than preceding, usually stagnant ponds. 



Potamogeton plantagineus. Du Croy. 



Record : D/s. — F. Buchanan White (Scottish Naturalist, vol. 2, 

 New Series). 



* In this genus I have simply followed the London Catalogue, as the integration of the sub-species 

 has never to my knowledge been carefully done. 



