191 3- CoivGAN. — Bunit Ground Flora of Killincy, 89 
of this Senecio on the KiUiney Hill burnt ground was re- 
markable. Seedhngs, young flowering plants, and thickets 
of withered stems appeared in profusion in September 
last, when a careful measurement gave to some of these 
old stems a height of 4 feet ! Of the 15 species not specially 
adapted for dissemination, not one was found to be common, 
and rather more than half were quite rare ; of the 30 
specially adapted species, 10 were common and only one- 
third were rare. 
Passing to the second group (6) of surviving species, 
it may be noted that taken as a whole and as it stood at 
the opening of January last it played a distinctty subordi- 
nate part in providing a new vegetable carpet for the 
blackened hill slopes. Shoots from the old gorse stumps 
were very numerous and occasionally reached to 18 inches 
in height ; here and there the Ling and the Purple Heather 
were sprouting from the old roots, but as yet had hardly 
attained to more than 2 inches in height ; shoots from 
the Wood Sage, too, were fairly frequent and some fine 
tufts of Carex binervis were seen, but the total mass of 
vegetation produced by these species was inconsiderable. 
This group of survivals, however, small though it was in 
mass, contained some interesting members. Taken in 
their order, Corydalis claviculata comes first. A fine plant 
of this rare species, well-known to inhabit Killiney Hill, 
appeared on the edge of the steep scarp of granite which 
forms the boundary of the chief burnt area on the southern 
side of the hill, and is marked "Dangerous" by notice 
boards placed at intervals. This plant grew up right 
beside the charred stump of an aged gorse bush which had 
borne the full brunt of the fire. The hard, black, polished 
seeds of Corydalis are quite unfitted for wind dispersal, but 
their smooth surface and lenticular form enable them to 
slip readily into cracks or crevices of the soil where they 
might easily escape destruction by fire. This species, in 
Dublin, at all events, peculiarly affects gorse spinnies, 
and I have twice observed its renascence in quantity in 
such stations after the firing of the gorse, once in the Dingle, 
Glenamuck, in 1900, and again on Killiney Hill in 1902. 
