188 



A contribution to an eventuel flora of the North-Fri- 

 sian Islands gathered on a journey to the islands Amrum, 

 Føhr, Sylt and Romø in the summer of 1887. 



Filices. 



Poly podium vulgare L. Sylt: on the sandhills near List. 



Equisetaceae. 

 Equisetwn arvense L. Sylt and Romø: some places. 



Juncagineae. 

 Triglochin palustre L. Amrum: Norddorf. Romø. 



— maritimum L. Romø. 



Potamogetoneae. 

 Potamogeton natans L. Sylt: in a pool near Braderup. 

 Juncaceae. 



"^Juncu's bufonius L.*) Amrum: some places between the 

 hghthouse and Stenodde. Sylt: near Tinnum. 

 Romø: Sønderby. 



* — aciitiflorus Ehrh. Romø: Kirkeby. 



— conglomeratus L. Romø. 



— effusus L. Romø. 



— supinus Moench. Romø. 



— atricapilhis Drej., v. congesta. Romø. 

 Lusula campestris DG. Romø. 



— multiflora Lej. Amrum and Romø. 



— — var. congesta. Amrum, Sylt and Romø. 

 This variety seems here as in West-Jutland to be 

 the most common form of this species. 



Gyperaceae. 

 Heleocharis ])alustris R. Br. Romø. 



— multicauUs Sm. Amrum: sandhill-flats west of 

 Norddorf. Sylt: sandhill-flats on List. 



— uniglumis Link. Romø. 



Scirpus caespitosus L. Amrum: on the heath between Nebel 

 and Norddorf and between the hghthouse and Sten- 

 .odde. Romø: on the heath near Kirkeby. 



*) Tlie species marked * are as far as 1 know quite new to the North- 

 Frisian Islands. 



