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NOTE ON AN ABNOEMAL SEEDLING OF WIDDRINGTONIA 
CUPBESSOIDES, AND A BEIEF ACCOUNT OF THE 
VASCULAR SYSTEM OF THE NORMAL SEEDLING. 
By H. S. Moekis. Communicated by E. P. Phillips, M.A. 
(Read June 16, 1909.) 
Among some seedlings 
of Widdringtonia cupres- 
soides, Endl.," kindly ger- 
minated by Mr. G. H. 
Ridley, of the Municipal 
Gardens, Cape Town, for 
Mr. W. T. Saxton, of the 
South African College, 
who handed them over to 
me for investigation, was 
a curious example of in- 
complete twin formation. 
As far as the writer is 
aware, there is no other 
case on record of such an 
occurrence among Gym- 
nosperms, although some- 
what similar cases have 
been found among Dicoty- 
ledons. 
This specimen (shown 
in Fig. 1) consisted of two 
seedlings fused together 
very completely through- 
out the length of the 
hypocotyl and the upper 
part of the root. The two 
root-tips were, however, 
separate and distinct, as 
were the two pairs of 
cotyledons and the plu- 
mules. In the fused part 
the cortical tissue of the 
two seedlings was con- 
tinuous, and had a com- 
^ CO 
CD i..-- 
R 
Fig. 1.— C = cotyledons ; P = plumule ; T = transition 
region ; H = hypocotyl ; K = root ; RT = thetvvo root- 
tips ; W, X, Y, Z = successive transverse sections 
through regions indicated by arrows. (Natural size.) 
Gallitris cupressoides, Vent. 
