140 H. MØLHOLM HANSEN 
TABLE 28. 
A, B, Cand D denote the different series of types of moisture (cf. text). 
I II III I\ V VI VII 
AS Minuartiayerna.«)..2)5.<+2- 9% 16 3 
Thymus serpyllum .......... 53 50 32 4 » » 
Juneusatrindusee:ern UT 41 45 51 6 1 > » 
Selaginella selaginoides ...... 14 34 63 20 5 2 
Cardamine pratensis......... 4 11 41 59 38 10 1 
Violaspalustrisre see Te Le > 1 9 31 40 2 » 
Carex Goodenoughii ......... » 1 47 67 66 53 
* Eriophorum polystachyum ... > 14 79 81 100 
en ALA ie oie ieee ose a> » » 4 20 36 50 
Bb oa ALPINA Er ana: 3 3 10 12 2 1 > 
Equisetum variegatum ...... 8 17 36 32 26 4 | 4 
Polygonum viviparum ....... 68 87 95 93 95 86 | 4 
C. Cardamine pratensis......... 4 11 41 59 38 10 1 
Deschampsia cæspitosa ...... > 1 16 41 3 » » 
rer CAPI 22. Ove 2 : > > 8 » > > 
D. Empetrum nigrum .......... » 94 97 42 52 49 
Vaccinium uliginosum ....... » 57 4 26 47 64 
PCA RAA 55 » 15 1 1 8 53 » 
In considering the ecology of a species, a knowledge of 
both groups of characters is equally necessary. 
Table 28 shows a selection of types of moisture differing in 
respect of position and magnitude of the maximum and the number 
of classes over which the species is distributed. A number of 
deviating species are given at last. 
A. The individual species in the series Minuartia verna, Thymus 
serpyllum . ... (the A series) are characterised by a pronounced 
maximum differently situated for the different species and at different 
levels. From the maximum class the F.-percentage decreases equally 
in both directions or from the edge of the scale towards its middle. 
B. Poa alpina, Equisetum variegatum, and Polygonum viviparum 
differ from the above species in that they are equally distributed 
over all classes of moisture; they differ from each other by the F 
percentage which is low for Poa alpina, somewhat higher for 
