Notes on the Flora of Howth. 177 



named by Rev. W. M. Rogers. K. suberedus, R. villicanlis, and R. discolor 

 are mentioned by Mr. Hart as occurring on Howth. The last-named is 

 common there ; the second might be expected ; the first is a very rare 

 plant in Ireland. 



Myriophyllum spicatum, L. — Abundant in the pool by the sea at 

 the Quarr}'. The larger pool there is full of what appears to be the same 

 plant, but it was out of flower when I visited the place. M. alterniflorum 

 is recorded from these pools by Mr. Hart. I could not find it there. 



[Bryonia dioica, L.— One large plant on a rocky slope below KarlsclifF 

 where it has grown for some years. It does not grow in any garden in 

 the neighbourhood.— Miss R. Mahaffy.] 



[CEnothera biennis, L.— Established by the railway near Howth 

 station, where it has grown for at least five years. — Miss R. Mahaffy.] 



Aplum nodiflorum, Reichb., var. ochreatunri, DC— In a spring 

 on the east side of Ireland's Ej'e. 



Galium mollug'o, L., var. insubricum (Gaud)— Howth. — H. C. 

 Levinge, Bat, Ex. Chib Repo7't, 1893. 



Arctium nemorosum , Lej. — On the Burrow; and I believe it occurs 

 elsewhere. 



A, intermedium ) Lange. — North corner of Ballykill field near the 

 Pavilion. 



Taraxacum officinale, Web., var. erythrospermum (Andrz.).— 

 Sandy places east of the Cosh. 



[Crepissetosa,Hall. fil. — InafieldbetweenDrumleckandtheNeedles. 

 — Miss R. Mahaffy. An alien which has not, I think, been noticed in 

 Ireland hitherto.] 



Orobanche minor, Sm. — On a bank at Tansy. — Miss R. Mahaffy 

 Abundant in a clover field near Sutton station. — R.Ll.P- A plant which 

 is steadily spreading in Ireland. 



Mentha Puleg'ium, L. — Old pasture fields near Bailey post-office. 

 Miss R. Mahaff}'. An interesting addition to the flora. 



Stactiys palustris x sylvatica. — In a potato patch near Howth 

 chapel. The more common hybrid form, nearer to S. palustris than to 



S. sylvaiica. 



Chenopodium murale, L. — On rubbish-heaps south-west of 

 Howth chapel, and on waste ground on the Burrow. Was recorded 

 from Howth in the Brit. Assoc. Guide (1878), but excluded by Mr. Hart as 

 probably a mistake. 



Euphorbia portlandica, L. — Ireland's Eye, Sir R. Ball. — Hart, 



Journ. Bot., 1891, p. 377. 



Urtica pilullfera, Iv. — B3' a ruined cottage on edge of the north 

 cliff near Bailey Lighthouse, R. LI. Praeger. — Hart, Journ. Bot., 1891, p. 377. 

 An alien plant, which I did not refind there last year. 



Ruppia rostellata, Koch. — Plentiful in the pool by the sea at the 

 Quarry. 



BIysmus rufus, Panz. — Margins of the pool by the sea at the 

 Quarry. Previously recorded from the vicinity — probably from this 

 identical vSpot — by Mackay, who says {Flor. Hib., 1836), "between 

 Baldo3de and Howth," but disallowed by Mr. Hart. 



Festuca uniglumis, Soland. — On the western edge of the Cosh [not 

 coast, as printed], H. C. Levinge. — Hart,yc;«/vz. Bot., 1891, p. 377. 



Selag^inella selag-inoides, Gray. — Small bog on the north side of 

 Howth Hill.— D, M'Ardle, I.N., 1893, p. 174. 



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