86 
The Irish Natu7'alist, 
May, 
were present simultaneously on the burnt ground in the 
first week of January, 1913, or 18 months after the fire. 
The nature of this renascence flora may best be under- 
stood when the species are arranged in the three groups 
set out below : (a) Introduced or Immigrant Species, 
including all plants which had certainly or with a high 
degree of probability entered the burnt areas after the fire 
from adjacent unburnt areas ; (h) Survivals, or species 
which persisted in the burnt ground throughout and after 
the fire, and (c) Species of doubtful standing, since it was 
not possible to determine with certainty whether they were 
immigrants or survivals. In the following fists the pre- 
fixed letters C, Fr. and R, denote, respectively, that a 
species was found to be common, frequent, or rare. 
List of Plants found growing on the Burnt Ground of 
Killiney Hill in the first week of January, 191 3, eighteen 
months after the apparently complete destruction by fire of 
the original flora. 
(a) Immigrants. — 45. 
R. 
Sisymbrium officinale. 
Fr. 
Taraxacum officinale. 
Fr. 
Cardamine hirsuta. 
C. 
Sonchus oleraceus. 
R. 
Stellaria media. 
R. 
Anagallis arvensis. 
R. 
Cerastium triviale. 
R. 
Myosotis arvensis. 
R. 
Geranium molle. 
Fr. 
Digitalis purpurea. 
Fr. 
Acer Pseudo-platanus. 
R. 
Veronica serpyllifolia. 
R. 
Trifolium minus. 
Fr. 
Plantago lanceolata. 
Fr. 
Alchemilla arvensis. 
R. 
Juncus bufonius. 
Fr. 
Cotyledon Umbilicus. 
C. 
Anthoxanthum odoratum. 
R. 
Epilobium obscurum. 
Fr. 
Agrostis canina. 
R. 
Sambucus nigra. 
C. 
Aira praecox. 
Fr. 
Galium saxatile. 
R. 
Dactylis glomerata. 
Fr. 
Bellis perennis. 
C. 
Holcus mollis. 
Fr. 
Tussilago Farfara. 
C. 
Poa annua. 
C. 
Senecio vulgaris. 
C. 
Lolium perenne. 
C. 
S. sylvaticus. 
Fr. 
Marchantia polymorpha. 
R. 
S. Jacobaea. 
C. 
Funaria hygrometrica. 
R. 
Crepis virens. 
C. 
Barbula fallax. 
R. 
C. taraxacifolia. 
Fr. 
Polytrichum piliferum. 
Fr. 
Cnicus lanceolatus. 
F. 
P. juniperinum. 
Fr. 
Hypochaeris radicata. 
Fr. 
P. commune. 
R. 
Leontodon autumnalis 
Fr. 
Parmelia conspersa. 
R. 
Parmelia om 
phalodes. 
