ARUM MACULATUM AND ITS CROSS-FERTILIZATION. 237 
ens, as also occasionally in less spotted ones, the spots are often 
faintly developed on the leaf-stem, and the wing or ribbon which it 
bears, but never on the sheath; and it is ohamerathe that the spots 
which appear on their spathes are always bulged inwards; so that 
if a spathe may be regarded as a modified leaf, it may further be 
regarded as one rolled backwards. We have generally noticed these 
very darkly marked specimens, which are often very handsome 
_ objects, growing in woods, but, as a tins we veer that they are 
generally unspotted in such situatio We have not unfrequently 
observed unspotted pinto to be faintly marked ieee the veins with 
a ae soning white colour. 
ough the suet of the leaves is so rapid, that of the 
deaths is extremely slow, and the former have often arrived 
e 
may e 
digging g up an entire plant sue the winter, when 
stem. : long while then elapses before the ‘sicko mis appears, 
but by the time it is quite free it is almost of its full size, though 
still tightly rolled up; and although the sunlight has never reached 
the spadix or anthers, these are already of their proper colour. 
The stalk continues to grow until it reaches a length of about two 
inches, and the tip of the ieate is rather higher than the leaves. 
At this stage a halt is made for some days, and although apparently 
quite fully formed and ready to open, it does not do so. As show- 
ing the slowness of development of the spathe, we may remark that 
leaves, seems to vary m uch g corti to the seas 
1880 and 1881 Mr. Christy found them first on ee: 5th’ rey "sth 
respectively, but on the 6th of April in 1882, and about the 23rd in 
ea after mild winters. In about a month from the appearance 
of the first ones — are very few to be found out unwithered. 
Six inches would Ley aps be about the average total length of a 
spathe, but we have on some occasions seen much larger ones; 
t is 
ne are rolled up indifferently either way—either dextrally or 
sini y—in about equal numbers. 
Th ong period of quiescence preceding the opening of the 
Spathe is followed by a short one of great activity and interest ; 
