68 



Landt (1. c. p. 204) mentions that Nastiirtium officinale occurs frequently in 

 eiiclosed fieids especially in fieids »which have been cultivated the year before« ; 

 this explains the confusion with Cardamine hirsiita L. Also Hornemann reports 

 that it was found In' Lynglwe, but a specimen in the collection of the Botanical 

 Gardens, Copenhagen, gathered by the latter and labelled Sisymhriiim Nastiirtiiim, 

 is a young not flowering plant of Cardamine pratensis , so even this statement is 

 incorrect. 



Order XXIII. DROSERACEAE. 



94. Drosera rotundifolia L. 



Very rare ; S a n d 6 : Nigitjern near Sands (R., !) ; S 3^ d. : near Tværaa and 

 Frodebo (R.). Occurred in a carpet of Sphagnum on Sando, fruiting 

 freely by the end of August, but the specimens were small and slender, 

 the inflorescences short and few-flowered. 



Order XXIV. EMPETRACEAE. 



95. Empetrum nigrum L. 



Common everj'where on not too moist soil, both in the lowlands 

 and on the highest hills. 



Fl. Ma}'. Fr. August, but fruiting very sparingly and differently 

 every year. 



Order XXV. GERANIACEAE. 



t Geranium molle L. (?). 



A young not flowering specimen found as a weed in a garden at 

 Thorshavn (R.). 



96. G. silvaticum L. 



Rather common on luxuriant rock-ledges, but only in the lowlands. 



Fl. June — July. 

 Martins mentions G. piatense , but it has doubtless been confused with the 

 above-mentioned. 



Order XXVI. HALORAGIDACEAE. 



97. Myriophyllum alterniflorum D. C. 



Common in the numeroiis small lakes and in the streams running 

 out of them. 



Fl. beginning of Jul}'. 



Order XXVII. HYPERICACEAE. 



98. Hypericum pulchrum L. 



Common on rock-ledges and on hilly slopes; requires fairlj' dry 



soil and favourable exposure and occurs most frequently in the pros- 



trate or slightly ascending and slender form ff. procumbens Rostr. 1. c. 



p. 34), but in good fertile soil the erect normal form can also be met with. 



Fl. July. Fr. August— September. 



