236 BOTANICAL SOCIETY OF EDINBURGH.  [Szss. uxxr. 
MEETING OF THE SOCIETY, 
December 13, 1906. 
J. RurHERFORD Hint, Esq., President, in the Chair. 
The following were elected Resident Fellows :— 
R. STEPHEN ApAmson, B.Sc., GEORGE Bryce, B.Sc., 
Mr. Humpprey G. CarTER, Mr. JOHN HUNTER, and 
Mr. ALEXANDER M‘CuTCHEON. 
The following communications were read :— 
A FurRTHER NOTE ON THE AUSTRALIAN TUBEROUS DROSERAS. 
By Mr. ALEXANDER Morrison. Communicated by Professor 
BayLeEY BAurFour, F.R.S. 
The specimens now sent show a striking difference in two 
species—D, macrantha and D. gigantea—trom that seen 
in the type represented by D. erythrorhiza. In the latter 
type the organic apex of the bulb is kept on the mesial or 
inner side, and for present convenience might be called 
“introrse,” but in the two first-named they would be named 
“extrorse,’ because the apex is situated on the external 
aspect, though closely drawn in, so as to be quite close to 
the axis of the plant, the unilateral development of the 
consolidated bases of the “leaves” of the bulb taking place 
on the inner side. In the erythrorhiza form the “centri- 
petal” growth of the bulb leads to its penetration of the old 
one and its formation within it in an “endogenous” manner, 
but in the other type there is a divergence of the new bulb 
from the old one, and though the tips of the bulb scales in 
D. macrantha are not discernible on its surface, that is 
because it is in immediate contact with the soil, so that in 
erosion a roughening of the surface is caused. The bulb 
of D. gigantea is usually “sessile” on the end of the old 
rootstock, and remains covered by the old membranes, but 
sometimes it is borne on the end of a strong stolon-like 
process, which carries it an inch or two deeper into the soil, 
below the old bulb. This was seen in some specimens found 
