Table XLII. Composition of the three plant communities along 

 the hot-pipe vegetation survey transect. 



Birch Community 



Transition Community 



Spruce Community 



Betula papyrifera 



Dominant Species 



Betula papyrifera 

 Alnus crispa ssp. crispa 



Picea glauca 



P. mariana 



Alnus crispa ssp. crispa 



Secondary Dominants 



Rosa acicularis 



Equisetum arvense and E. pra- 



tense 

 Calama^ostic canadensis ssp. 



canadensis 

 Uoehringia lateriflora 



Rosa acicularis 

 Ledum groenlandicum 

 Calamagrostic canadensis ssp. 

 canadensis 



Ledum groenlandicum 

 Vaccittium vitis-idaea ssp. minus 

 various mosses 



Alnus crispa ssp. 



crispa 

 Cornus canadensis 



Picea mariana 

 Ledum groenlandicum 

 Vaccinium vitis-idaea ssp. 



minus 

 Ribes triste 



Rubus idaeus ssp. meianoiasius 

 Epilobium angustifolium 

 Mertensia paniculata 

 Linnaea borealis 

 Hylocomium splendens 

 other mosses 

 "Reindeer" lichens 

 other ground lichens macrofungi, 



andifferentiated 



Picea glauca 

 Salix spp. 

 Ribes triste 

 Viburnum edule 

 Vaccinium uliginosum ssp. 



aipinum 

 Rubus arcticus 

 Adoxa moschatellina 

 Peltigera spp. 



Intermediate Species 



Picea glauca Betula papyrifera 



P. mariana Vaccinium uliginosum 



Vaccinium vitis-idaea ssp. minus ssp. alpinum 



Equisetum arvense and E. pratense Equisetum scirpoides 

 Uoehringia lateriflora E. arvense and E. pratense 



Hylocomium splendens Calamagrostis 



canadensis ssp. 

 canadensis 

 Geocaulon lividum 

 Cornus canadensis 

 Hylocomium splendens 



Lesser Species 



Saiix spp. 



Vaccinium uliginosum 

 ssp. alpinum 

 Epilobium angustifolium 

 Mertensia paniculata 

 Linnaea borealis 

 Polytrichum spp. other mosses 

 Peltigera spp. 

 "Reindeer' lichens 

 other ground lichens 

 macrofungi, 

 undifferentiated 



Rare Species 



Rubus idaeus ssp. 



meianoiasius 

 Equisetum sylvaticum 

 Geocaulon lividum 

 Cornus canadensis 



Larix laricina 

 Salix spp. 

 Rosa acicularis 

 Equisetum sylvaticum 

 Arctagrostis latifolia var. 

 Carex Oederi ssp. viriduia 

 Stellaria longpipes 

 Rubus arcticus 

 Cornus candensis 

 Mertensia paniculata 

 Linnaea borealis 

 Valeriana capitata 

 Petasites sp. 

 Polytrichum spp. 

 Peltigera spp. "Reindeer" 

 lichens other ground lichens 

 macrofungi, undifferentiated 



Ribes glandulosum 

 Potentilla fruiicosa 

 Lycopodium complanatum 

 Moehringin lateriflora 

 Pyrola secunda 

 Sphagnum spp. 



109 



