CRYPTOGAMIC ORDERS. 



SERIES II. Order I. SQUZSSTACEJE. 



EQUZSSTUIVX Linn. Horsetail. 



1. S. arvense Linn. 



Ditch banks, and damp places — very common. Fl. April a'nd May. 

 Ranges from sea leyel to 1000 feet. 



2. E. pratense Ehr. (E. umbrosum Willd.). 



Damp heaths, and rocky places — rather rare. Fl. April and May. 

 Antrim — South side of "Wolfhill Glen {T. Brummond) ; Phytologist, O.S. 

 vol. IV. "Woodbum Glen ; Flor. Belf, Base of Divis, and 

 at Loonburn near Donegore ; Flor. List. At the base of 

 Slemish above Buckna, also head of Glenariffe, and of Glen- 

 ballyeamon ; Cyb. Hib. 



3. E. maximum Lamlc. 



Wet borders of fields, and by streams, and ditches — common, especially 

 in clay land. Fl. April till mid. May. 



4. E. sylvatlcum Linn. 



"Wet pastures, thickets, and heaths— frequent. Fl. mid. April till end 



of May. 



Down — "Woods, and moist ground ; Templeton, 1797. Between Comber 

 and Castle Espie ; H.N.F.C, 1863. Knock Glen, and rail- 

 way banks at same place ; T.H.C. Carrickmannan, Money- 

 reagh, Purdysbum, and Ballynahinch ; S.A.S. Clandeboye, 

 HolyM'Ood lulls, and Trassybum above Bryansford; R.Ll.P. 



Antrim— Springfield, Colin Glen, and Belfast waterworks ; Flor. Belf. 

 By the Lagan canal, Crow Glen, Woodburn, and on heaths in 

 Rathlin ; S.A.S. Caimcastle, and Camlough ; R.Ll.P. 



Derry — Frequent in moist woods and hedge banks throughout the county ; 

 D.M. Desertmaitin ; S.A.S. Benbradagh ; E. C. Hart. 



