R. BROWN, FLORULA DISCOANA. 267 



Aukpadlurtok {Chorda Filum, ^g-)* Fucus vesiculosus, L., Alaria 

 Pylaii, Grev. (Sutluitsok), (the ally of which, Alaria esculenta, 

 is eaten on our own shores), Rhodi/menia palmata^ Grev., are also 

 used. Lycoperdon Bovista is said to be applied to bleeding 

 wounds. 



VI. Introduced Plants. — In another memoir I propose discussing 

 the origin and nature of the Greenland flora, its geographical 

 range in Greenland, and the hypsometrical distribution of the 

 species ; but I believe it will not be out of place to conclude these 

 introductory remarks on the Disco flora, by calling the attention of 

 future collectors to the subject of introduced or colonist species. 

 Species at all tender, if accidentally introduced into Greenland, 

 though they may survive the summer, yet can scarcely be expected 

 to live over the winter. There are, however, some plants found in 

 Greenland, the indigenous character of which is doubtful. On 

 the sides of the fjords, up to 61°, is found, in the form of small 

 shrubs, the well-known Sorbus Aucuparia, L., and from its 

 position there seems to be same good reason for supposing it was 

 brought to Greenland by the old Norse and Icelandic colonists. 

 Again, Xanthium strumarium^ L., was found by Giesecke in the 

 garden of the Moravian Brethren at Lichtenau in the Frith of 

 Agluitsok, near Cape Farewell, in 60° N. lat. ; but was probably 

 sent from Europe in seed. These subjects, as well as the means by 

 which plants may be transported from place to place, the hybri- 

 dising of some of the more variable species, especially the Drabas, 

 are all eminently worthy of being attended to ; and as several 

 Arctic expeditions will be in the field next summer, we may hope 

 to obtain some more enlightenment on these matters. 



VII. In addition to the gentlemen who have so minutely 

 examined the collections, and regarding whose work I will not say 

 a single word, as it speaks for itself, I have specially to thank 

 Dr. Hooker, Professor Oliver, and Mr. J. G. Baker, of the 

 Herbarium at Kew, for much assistance, and a carte blanche in 

 the way of whatever aid the magnificent collections under their 

 charge could aflbrd to me while studying and assorting my 

 collections. These collections comprehend all the species actually 

 brought home as far as flowering plants and ferns are concerned. 

 Several other species, however, were identified, but too far gone to 

 be preserved. It is possible that a further examination of some of 

 the marine Algae and Lichens may show some of them to be 

 distinct, and during the examination of the zoological collections, a 

 few minute species of Alga? may be found. The Diatomaceous and 

 Desmidious collections are so extensive that it was found impossible 

 to present the result of their examination in this place, and a large 

 portion of them is not yet accessible to science.* Though a large 

 number of the species recorded in this Florula were identified by 

 me at the time of collection, yet for the nomenclature as it now 



* For the species causing the discoloration of the sea, see Trans. Bot. 

 Soc. Edin. for Dec, Quart. Journ. Science, and SeernarCs Journ. Bot., 1868, 

 and Translations in Das Ausland, Feb. 27 ; 1868, Geogr. Mitt., 1868, &c. 



