INDIVIDUAL SPECIES. 21 
Festuca ovina, 
Seeds sown under this name apparently may be those of any 
species or variety of fine-leaved fescue which are available in 
quantity. Those sold as F. ovina tenuifolia usually conform to a 
distinct type. 
It is not known which of these types was sown on Area 6, but 
in view of the fact that at 54 years only o-1 per cent. of / ovina 
was recorded, this is of little importance. In the two years which 
followed, the grass completely disappeared, although, as shown by 
the fact that it hada P.c. fr. of 16-3 on the old grass-heath of 
Area 8 adjoining, the grass is strongly indigenous. 
This shows, not only that the sown variety was valueless for 
this situation, but that even the indigenous variety had not 
re-colonised the ground to an appreciable extent at 74 years. 
On Area 7, where no seed of this name was sown, traces 
were found at 54 years, and a percentage frequency of 1-3 at 64 
years, so that evidently for some reason the grass was re-colonising 
this area at a faster rate than Area 6. This may be chiefly due to 
the difference in the competing plants, especially the great develop- 
ment of Cynosurus cristatus on Area 6. 
Festuca rubra. 
A creeping variety of this grass is indigenous to Areas 1-4, 
and it may also be found in very small quantities in the shade of 
gorse bushes on Area 8. It is probable therefore that it was also 
to be found to a slight extent on Areas 6 and 7 in similar situa- 
tions in the original grass-heath. The results for Area 8, however, 
show that it is not indigenous to the open grass-heath. 
The seed of this creeping variety is not obtainable com- 
mercially, and the seed of no variety of F. rubra was sown on any 
of these areas. Vet, on Area 2 especially, it formed an important 
part of the herbage (7-9 per cent.) even at 54 years, and with 
some fluctuation in the intervening years, it had exactly the same 
P.c. fr. at 104 years. 
On Area 1, on the other hand, it had only a P.c. fr. of 4-4 at 
54 years, while the highest for Area 3 was only 2-8 at 8} years. 
