

[Vol. 2 



68 ANNALS OK THE MISSOURI BOTANICAL GARDEN 



ilia Emerus, Epilobium obscurum, Laserpitium latifolium, 

 Ligustrum vulgare, Luzula nemorosa, Melampyrum cristatum, 

 Rubus corylifolius, R. Lindebergii, Selinum carvifolium, Slum 

 latifolium, Viscum album, Vicia eassubica, V. lathyroides, etc. 

 A few of these have a rather larger distribution than the 

 beech has at present; others, which must have immigrated 

 recently, are found only within quite a small area. 



The region for the cultivation of wheat in Norway coin- 

 cides in the main with that of the beech, but extends a little 

 farther, namely westward as far as Mandal, and to a height 



of 1,246 feet above sea-level. 



3. The Region of Ilex Aquifolium. — This region is situated 

 a little to the west of that of the beech, and does not have a 

 lower mean temperature for January than 1°C. It extends 

 from Arendal to Christianssund (63° 7' N. Lat.), but does 

 not include the outermost islands on the west coast. 



A large number of vegetable species occur in this region. 

 As especially characteristic may be mentioned Aeropsis prae- 

 cox, Asplenium Adiantum nigrum, Cardamine hirsuta, Cen- 

 taur ea decipiens, C. nigra, C. pseudophrygia, Cerastium 

 tetrandrum, Chrysosplenium oppositifolium, Circaea lutetiana, 

 Conopodium denudatum, Corydalis clariculata, Cyitosurus 

 cristatus, Digitalis purpurea, Drosera intermedia, Gentiana 

 Pneumonanthe, Geranium columbinum, Hedera Helix, Jler- 

 acleum australe, Hydrocotyle vulgaris, Hypericum pulehrum, 

 Hypochaeris radicata, Juncus squarrosus, Leontodon hispidus, 

 Luzula sylvatica, Lysimachia nemorum, Meum athanumticum, 

 Quercus sessiliflora, Pilularia globulifera, Poly gala dep res- 

 sum, Primula acaulis, Rosa pimpinelli folia, Rumex obtusi- 

 folius, Sagina subulata, Scirpus setaceus, Sedum anglicum, 

 Senecio Jacobaea, Stellaria Ilolostea, Teesdalia nudicaulis, 

 Triticum acutum, T. junceum, and Weingartneria cotiescens. 



A few of these species, however, can bear a January 

 isotherm that lies a little lower than 1°C. These species, 

 among which are Hedera Helix and Quercus sessiliflora, occur, 

 therefore, also in the beech region in the southeast of Norway, 

 but have their chief distribution in the Ilex Region, and must 

 therefore be assigned to that region. 



