910 



the Færoese Ilora, thai is those species printed in italics in the 

 list (pp. 896—902). Of the 145 perennial piants 86 (59 p. cent) are 

 spot-bound, 25 (17 p. cent) have epitenean runners and 34 (24 p. cent) 

 subterrean shoots. 



The large number of spot-bound herbs indicates a close vege- 

 tation and a soil closely woven through with rhizomes and roots, 

 amongst which stolons make their v^^ay with difficulty. The ma- 

 jority of the wandering species have their habitat not in the gene- 

 rally prevaiiing close grassy vegetation, but in the opener formations 

 in water, in bogs, on the shores or on the rock-flals ; thus most of 

 the limited number of aquatic piants are species with wandering 

 shoots (Potamogetonaceæ, etc). 



It is also noteworthy that only 7 species — 6 being orchids — 

 have bulbs or tubers, viz. Scilla uerna, 3 species of Orchis, Malaxis 

 paliidosa and 2 species of Habenaria. 



When the plant-associations come to be treated in detail later 

 on, we shall have occasion to return to this aspect, and it will then 

 be seen how far the different associations are characterised by spe- 

 cies with one and the same mode of vegetative propagation. 



4. Time of flowering (Phenology). 



As far back as Landt's book on the Færoes (1800), there was 

 a little information of a general kind on the flowering period of 

 some of the species. 



In the list of piants given in »Botany of the F'æroes« (Osten- 

 feld 1901 b) I have staled as far as possible the flowering and frui- 

 ting periods for each species. These are based on my own ob- 

 servations and on herbarium malerial, but all the statements are 

 only approximately correct, especially as regards the early flowering 

 species, since my principal sojourn on the Færoes was in the niiddle 

 of the summer (15July — 4 Sept. 1897). The knowledge requisite for 

 a complete phenological account can only be acquired in early spring; 

 in faet one would require to spend several years in collecting the 

 necessary information. 



Some notes on the period of flowering are given in a short paper 

 on the Færoese flora (Borgesen and Ostenfeld Hansen 1896). 

 Borgesen states there, that on 15th June 1895, on the summit- 

 plateau of Nolso, he observed in flower; Arabis petraea, Silene 

 acaiilis, Thalictriim alpinum, Cerastiiim Edmondstonii and Carex 



