464 Mr Philip Sewell on the Flora of [sess. liii. 



the Arctic circle. The collection was brought to this country 

 by Mr H. IST. Sulivan: it is probably not by any means 

 adequately representative of the country, but it suggests a 

 richer flora by far than that found in the colder regions 

 about the Yugor Straits: — 



Banuncidus acris, Trollius europceus, Aconitum Napellus, 

 A. lycoctonum, Caltha pcdustris, Nasturtium terrestre. Erysimum 

 chciranthus, Cardamine pratensis, C macrophylla, Geranium 

 'pratense, Epilobium angustifolium, Cerastitcm dahuricum, 

 Stdlaria radians, SUene graminifolia, Trifolium repens, T. 

 liipinastrr, Vicia Cracca, Lathyrus pratensis, Sanguisorha, 

 Alchemilla vulgaris, Gettm urhanum, Potcntilla anserina, P. 

 midtifida, Pitbics arcticus, R. Chammmorus, Spiraea Jjlmaria, 

 EmpetriLm nigrum, Hcracleurn, (Enanthe crocata, Galium 

 horeale, Valeriana officinalis, Sausswrea, Cardmis, Solidago 

 Virgaurea, Anthemis tinetoria, Achillea Millefolium, Tana- 

 cctum v'idgare, A'rtcmisia vulgaris, Senecio sarracenicus, 

 Ledum palustre, Vaccinium ■uliglnosum, Polemonium ca^ruleum, 

 P. pidchellum, Myosotis palustris, Veronica longifolia, Pedi- 

 cidaris compacta, Mentha arvensis, Lamium album, Polygonum 

 Aviculare, P. viviparum, Pumex Acetosella, Chenopodium album, 

 Veratrum album. Allium Schoenoprasum, Carex glauca, 

 Eriophorum vaginatui7i, Alopccurus pratensis, Poa pratensis, 

 and Bromus erectus. 



If we refer to the Summary, it is evident from the present 

 collection and from those made by previous travellers, that 

 whilst most of the Phanerogams collected in Lapland are 

 known as common to Siberia, they do not push so far to the 

 north in the latter country as in the former. Wliilst many 

 are present in llussian Lapland, the low-lying land from the 

 Petchora to the White Sea affords no suitable foothold which 

 would allow of their distribution eastward along the same 

 line of latitude; the difference in the physical nature of the 

 region of the Yugor Straits, and the greater cold thereabouts, 

 are evidently the chief causes which restrict the distribution 

 of these common Arctic plants, but it is not possible to say, 

 without careful study of the distribution of each species, 

 what prominence must be given to one or the other. 



It is a subject of much interest to study as to tlie further 

 distribution of many of the species enumerated in the 

 various tables. We shall see that a very large proportion 



