34 



G. D. FULLER AND A. L. BAKKE 



nanophylls and if we consider its valence percent as added both 

 to the microphylls and nanophylls in our calculations, a slightly 

 different value is obtained; namely, 48% microphyll, 40% nano- 

 phyll and 11% leptophyll; but it does not conceal the fact that 

 the characteristic of this formation is the relatively large leaf 

 size. 



The result of this investigation of leaf-size in the four for- 

 mations is summarized in table 5, where the formations are grouped 



TABLE 1 

 Statistical-biological analysis of the Calluna-Empetrum heath on the hills (hill- 

 island) in West Jutland (100 areas of 0.1 sq. m. each) 



Calluna vulgaris 



Empetrum nigrum 



Arctostaphylos uva-ursi 

 Vaccinium uliginosum . 

 Vaccinium vitis-idaea . . 

 Carex Goodenoughii .... 

 Car ex panicea 



LIFE-FOBM 



Ch 

 Ch 

 Ch 

 N-Ch 

 Ch 

 G 

 G 



DEGREE OF 



FREQUENCY 



OR VALENCE 



PER CENT 



98 

 90 

 11 

 1 

 3 

 1 

 1 



LEAF-SIZE 

 OF THE EVER- 

 GREEN PHANE- 

 ROPHYTES ANT) 

 CHAMAEPHYTE8 

 WITH SIMPLE 

 (and LOBED) 

 LEAVES 



1 

 1 



n 



TABLE 2 

 Statistical-biological analysis of the Thyme formation upon a hill slope 2 km. east 



of Lerida (50 areas of 0.1 sq. m. each). 



Thymus hiemalis 



Fumana glutinosa 



Genista scorpius 



Helianthemum hirtum 



Santolina chamaecyparissus . . . 

 Siderites hirsuta var. tomentosa 

 Teucrium polium 



LIFE-FORM 



Ch 

 Ch 

 Ch 

 Ch 

 Ch 

 Ch 

 Ch 



DEGREE OF 



FREQUENCY 



OR VALENCE 



PERCENT 



100 

 4 

 2 

 6 

 6 

 2 

 4 



LEAF-SIZE 

 OF THE EVER- 

 GREEN PHANE- 

 ROPHYTES AND 

 CHAMAEPHYTES 

 WITH SIMPLE 

 (AND LOBED) 

 LEAVES 



