Tricotyls, Hcuii-tricotyls, and Tctracotyls. 361 
stand in a whorl and the seedling cannot be distinguished 
from those in which the seed-leaves and not the axis have 
divided. Only after further growth its true nature can 
be decided. If, however, the doubling is continued with- 
out splitting of the stem, peculiar fasciated plants may 
be the result. In such cases the real state of affairs often 
remains hidden. 
In Amarantus spcciosiis especially, I have often ob- 
served such twins (Fig. 71), and also in Datura S tra- 
in onhun, Acer Pscudo-Platanus (Fig. 70) etc. 1 Fig. 72 
represents a section of a stem of a tetracotylous plant of 
Fig. 71. Seedlings of Amarantus speciosus. A, tetracotyl- 
ous ; B, twin, each of the split halves of the axis bearing 
two seed-leaves ; C, twin, one of whose halves is tricotyl- 
ous ; D, hemi-pentacotylous seedling, the sole instance of 
this case in a culture of over 20,000 seedlings ; E, Tri- 
syncotylous plant. Harvest of 1893. 
Ainarantns speciosus, which split at a considerable height 
above the insertion of the cotyledons and bore in the 
fork two leaves the midrib of which had grown together 
on the dorsal side up to within a short distance of the 
apex. In the axils of these leaves small branches were 
seen with a little terminal inflorescence and a small leaf 
inserted below this. Above this point the two branches 
of the fork were of normal growth. Fig. 70 represents 
1 See L. J. LEGER'S exhaustive work on the anomalies in the seed- 
lings of Acer Pseudo-Platanus. Bull. Soc. Linn. Normandie, 1889, p. 
199, with plate. 
