106 HALOEAGACE^. [Rippwis. 



The form pedindtum occurs here and there along with the 

 usual state of the plant. 



2. M. spicatum (Linn.) — Spiked Water-Milfoil. 



Districts 12-4 5!6!7!----12! 



Lat. 51°-56°. Throughout Ireland probably. 



Type in Great Britain, British ? 



Ponds and ditches ; frequent. Fl. June, July, 

 Apparently not uncommon in many parts of the country, 



but has not been sufficiently distinguished from the following. 



3. M. altemiflorum (D C.) — Alternate-flowered Water-Milfoil. 



M. spvaatum var. Bentham. 



Districts 1-34-6-89- 11- 



Lat. 51°-56°. Throughout Ireland, 



Type in Great Britain, British. 



Ditches and ponds, especially on a boggy soil ; frequent. 

 Fl. June to August. 



Much more abundant than M. spicatum in the west ; 

 plentiful in many parts of Ireland, and probably distributed 

 throughout the country, but has, no doubt, often been passed 

 over as M. spicatum. 



HIPPURIS Linn. 

 1. H. vulgaris (Linn.) — Mar^s-tail. 

 Districts 123456789 10 11 12 

 Lat. 51°-56°- Throughout Ireland. 

 Type in Great Britain, British ? 



Ditches and slow streams, margins of lakes, &c. ; frequent. 

 Fl. June, July. 



Rather rare about Cork and Fermoy ; local also in Ulster, 

 but appears widely and generally distributed in Ireland. 



ObDEB CuCUEBITACEiE. 



06s. — Bryonia dioica (Linn.) is noticed by Threlkeld as 

 having been brought to him from Carlow. Mr. Carroll has 

 informed us that there is in Miss Grubb's collection a specimen 



