340 



particularly to the material in question being very scanty. In his 

 Hydrophytologia Lyngbye also gives accurate and valuable infor- 

 mation regarding the habitat and distribution along the Færoese 

 coasts of almost all the species found by him. 



Besides the large number of Færoese algæ which are enume- 

 rated in Hornemann's »Plantelære« 1 on the anthority ofLyngbye's 

 work, a few are added to the list, viz. Polyides himbricalis = P. ro- 

 tundiis and Callithamnwn corymbosum of which I shall give a 

 fuller account later on. Trevelyan's 2 paper must also be men- 

 tioned, though the Færoese algæ reported in it are likewise only 

 an extract from Lyngbye's Hydrophytologia. 



The next independant work which has increased our knowledge 

 of the Færoese algæ is »Færøernes Flora« published in 1870 by 

 E. Rostrup 3 , in which he gives the results of a journey made in 

 1867 to the Færoes in company with C. A. Feilberg. In this work 

 ten new species of marine algæ are added to the flora, among which, 

 however, as I have explained more fully later on, there is some 

 doubt as to whether the species Chætopteris plumosa which Rostrup 

 received from a Mr. Randropp of Thorshavn is really from the 

 Færoes. The total number of species of marine algæ reported by 

 Rostrup is not far from 100. The determinations of the material 

 in question were revised by Professor .1. G. Agardh of Lund and 

 Professor J. E. A reschoug of Upsala. 



The latest contribution to the marine algæ of the Færoes we 

 owe to Herman G. S i m mons who visited several parts of the 

 Færoes in the same year as I had begun my investigations, viz. 

 in 1895, but somewhat later than I. In his work »Zur Kenntnis 

 der Meeresalgen Flora der Færoer« 4 125 Færoese species are men- 

 tioned, as his list also includes the 16 species (of which 2 are 

 classilied as genera only, and 1, Porphyra miniata, had been already 

 recorded by .1. Agardh as Færoese) which I published in my preli- 

 minary list of 1896 5 , together with the Laminaria lingicruris var. 



1 Hornemann, I. W. : Forsog til en dansk økonomisk Plantelære. Kjøben- 

 liavn 1821—37. 



2 Trevelyan. W. C: On the Vegetation and Temperature of the Farne Islands 

 (Edinburgh New Philosophical Journal for January 1835 t. XVIII. Reprinted with 

 corrections, Florence, 1837). 



;; Botanisk Tidsskrift, Vol. 4. København 1870—71. 

 4 Hedwigia. 1807, p. 247. 



' Børgesen, F. and Ostenfeld Hansen, C: Planter samlede paa Færøerne 

 i 1895 (Botanisk Tidsskrift, Vol. 20. Kjøbenhavn 1805 — 00, p. 156). 



