Table XL. Mean number of stems of herbaceous species in 1-m' quadrats 

 in three plant communities along the hot-pipe vegetation survey transect. 



Birch Transition Spruce 



community community community 



(N=38) (N=30) (N=35) 



Species Quad 1-40 Quad 41-70 Quad 71-105 



Fern allies 



Lycopodlum complantum 



Equisetum scirpoides 



E,. sylvaticum 



E^. arvense and E^. pratense 



Graminoids 



Forbs 



Geocaulon lividum 

 Stellaria longipes 

 Moehringia lateriflora 

 Rub us arctlcus 

 Epilobium angustif olium 

 Cornus canadensis 

 Pyrola secunda 

 Mertensia paniculata 

 Linnaea borealis 

 Adoxa moschatellina 

 Valeriana capitata 

 Petasites sp. 



0.6 

 9.5 

 0.9 



Values for other mosses, as shown in Figure 43, are similar in the birch (quadrats 1-40) and 

 transition (quadrats 41-70) communities. In the spruce community (quadrats 71-105) moss values 

 are considerably higher. Mosses appear to be a much more important component of the vegetation 

 here. The lichen curve, though averaging lower values throughout the transect, is similar in shape 

 to that of other mosses. 



In Tables XXXVIII - XLI the mean (arithmetic average) values for the measure or estimates 

 of importance of all species or groups of species encountered along the transect are given accord- 

 ing to plant community. 



Table XLII shows the species composition of the three plant communities in terms of dominant 

 species, secondary dominants, intermediate, lesser, and rare species. Plants were assigned to 

 these five categories after studying their relative importances as depicted in the preceding tables 



107 



