*Generic Reference Type Author Year Title Secondary Title Volume Pages Publisher Secondary Author Notes Keywords Abstract Accession Number Journal Article Kärenlampi, L. 1970 Morphological analysis of the growth and productivity of the lichen Cladonia alpestris Rep. Kevo Subarctic Res. Stat. 7 9-15 1 1 Measurements were made of the lengths and diameters of Cladonia alpestris thalli and the lengths of their internodes. The weight distribution in the thallus was studied by dividing thalli and weighing rhe different parts. The relationships between the observed values were studied and conclusions were drawn concerning growth and productivity. There are definite relationships between the length, diameter and weight of the thallus. In the Kevo area the internode seems to continue growing up to the age of eight years. The relative length growth rate of the internode is highest when it is young. A diagram was prepared which illustrates both the weight distribution and the internode lengths. This is thought to show the pattern of growth. There is a definite growth zone at the top of the older thalli. The relative length, diameter and weight growth rates were examined by means of growth analysis. The RGR values of the young individuals were found to be much higher than those of the older ones 125