ALPINE FLORA AND FERNS OF NORWAY. 315 



ASPIDITJM LONCHITIS, Sw. ; Fl. D. tab. 497. Grows on rocky 

 places and in forests throughout the whole country. Rather 

 common ; somewhat less frequent in the south of Norway. On 

 the mountains it may be found up to the birch-limit, occasionally 

 higher. It bears fruit at different times, according to the nature 

 of the locality. It may be found here and there in Drivdal, and 

 near Kongsvold growing up to the birch-limit. 



A. ACULEATUM (L.) /3 ANGULARE. Very rare. Grows on 

 shady and rocky places. Beitstaden, in Throndhjems Stiff, is its 

 known northernmost habitat in Europe. It bears fruit from 

 midsummer, and is green the winter through. Always grows on 

 low ground, below the limit of fir. Has been found on Kolsaasen, 

 near Christiania ; near Sandvigen, on Ullernaasen, and in Ma- 

 ridal ; on Hovlandfjeld, near Modum ; and by Holmestrand ; near 

 Eidsfoss, near Ruim and Brunkeberg in Thelemark ; near 

 Tvedestrand, Christiansand ; Lervig and Frue Gaard on Storoe in 

 Bergen Stift, on Sandvigs Fjeld and in Dorvedal, near Voss. 



POLYSTICHDM THELYPTKEis, Roth. ; FL D. tab. 760. Grows 

 in marshy places, especially in copses on the edge of swamps. 

 Rather common in Aggershuus Stift ; less frequent in other 

 parts of the country. Nummedal, in Throndhjems Stift, is 

 its known northernmost limit. Found generally in low-lying 

 forests below 1,000 feet above the sea. Bears fruit in July and 

 August. 



P. OBEOPTEBIS, D.C. ; Fl. D. tab. 1,121. Not unfrequent from 

 the southern parts of Christiansands Stift, i. e., from Lillesand 

 along the whole coast to the southern part of Nordland, e. </., 

 Helgeland. Less common away from the coast. Bears fruit 

 from July to September. Not found at higher altitudes than 

 1,000 feet above the sea. 



P. FILIX MAS, Roth. ; Fl. D. tab. 1,346. Common in shady 

 places through the whole country to East Fiumark. Grows on 

 the Fjelds up to about the fir-limit. At Drivdal it has been 

 found somewhat higher. A variety, P. Erosum, Professor Blytt 

 has only found growing on Egeberg, near Christiania. Bears 

 fruit from July to September, according to altitude. 



P. CBISTATUM, Roth. ; Fl. D. tab. 1,591. Has hitherto only 

 been noticed in the low lands of the southern parts of Aggershims 

 Stift, never in mountainous regions. It grows at several place's 

 in the neighbourhood of Christiania, e. g., Ostenso, Lysaker, 



