110 MR. R. H, COMPTON: AN INVESTIGATION OF THE 
seedlings have been studied, 18 show a tetrarch symmetry, at least in some 
part of the axis *. 14 show a low transition, that of the other 6 being 
intermediate-low. We have already seen (p. 96, and p. 104 footnote) that 
Type of Type of Voandzeia, Erythrina, 
Pithecolobium Saman. Castanospermum, Vicia Faba. 
А 7 
T 4 
Stable tetrarchy in 7 
large seedlings. 
Mim. Cas, Paas. 
Type of Pithecolobium 
> Unguis-cati, Cesalpinia 
sepiaria. 
Y 
Unstable tetrarchy in 
Type of the hypogeal 
slender seedlings. 
climbing УСТЕ. 
Y ? 
Unstable triarchy. 
т р bo Wo CL | 
А І 
Y 
| | Unstable diarchy. y Stable diarchy | 
| Genistee, | 
! | 
Lor. Тнк. Gar. Hepys. 
these same characters аге closely associated with great size in the seedling. 
If it can be demonstrated that the production of a large seed is correlated 
with the tree-habit, we shall have an explanation of the preponderance of 
tetrarehy and low transitions in both cases, 
* The exceptions being Laburnum vulgare, one of the fixedly diarch Genisteæ, and 
Erythrina indica exhibiting heptarehy. “ Shrubs or small trees" are excluded. 
