380 MAESiLEAGE^. [Pilularia. 



BOTRYCHIUM Sw. 

 1. B. Lunaria (Sw.) — Moon-wort. 

 Districts 123456789 10 11 12 

 Lat. 51°-56°. Throughout Ireland, sparsely. 

 Type in Great Britain, British. 



G-rassy places, on short pastures and heaths; not un- 

 frequent. FL May to July.' 



Probably occurs in every county, but is liable to escape 

 observation. Plentiful in some of the limestone pastures of 

 Galway and Clare. 



OPHIOGLOSSUM Linn. 

 1. O. vulgatum (Linn.) — Adder's-tongue. 

 Districts 123456789 10 -12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Damp and boggy, pastures ; frequent. Fl. June, July. 

 This, like Boti-ychium, is often passed over. 0. hisitamcwm 

 (Linn.) should be sought on the south-vyest coast of Ireland. 

 It flowers very early in the year. 



ORDER LXXXIV.— MARSILEACE^. 



PILULARIA Linn, 



1. P. globulifera (Linn.) — PSl-wort. 



Districts -- -----8--- 12 



Lat. 58°-56°. "West and North-east of Ireland. 

 Type in Great Britain, British. 



In shallow water, and on marshy ground ; very rare. Fl. 

 June to August. 



8. Near the salmon leap at Ballinahinch, Connemara ; 

 Wade Bar. Between Letterfrack and Kylemore, sparingly 

 (Mr. H. Seebohm) ; /. C — 12. Abundant in marshy ground 

 about two miles from the mouth of the Blackwater, near 

 Lough Neagh ; Flor. Hib. By the river Bann, below Jackson 

 HaU, near Coleraine, Derry ; B. M. In stagnant pools by 

 the river Lagan, near Belfast ; Mr. B. Orr. Selchin Har- 

 bour, Lough Neagh ; Fhr, Vlst, 



