86 CROCION ACHLYDOPHYLLUM 
bundle is collateral at the base of the leaf with hadrome next to 
the palisade tissue, and becomes more or less concentric toward 
the apex. Cutinization is quite marked in the cells of the lower 
and upper epidermis. Comparing the face view of the lower and 
upper epidermis we find that the cell walls of the former are undu- 
late while those of the latter are straight. The stomata, more or 
less elliptical, are nearly alike as to outline on both faces, those on 
the lower outnumbering those on the upper face. (Fig. 24-25, 
upper and lower epidermis respectively). 
THE FLORAL LEAVES. (Fig. 26, a, b, c). 
The hairs are simple formed from single cells in which the 
external wall protrudes giving the fully developed hairs a charac- 
teristi¢ club shape (clavate) (Fig. 26 c). All the hairs are not of 
ae length, nevertheless all are notably clavate. They were 
well filled with protoplasm in which many granules were present 
(Fig. 26 a). The cell wall of the hairs has markings similar to those 
found on the hairs of the stem (Fig. 26 b). The epidermis even in 
so delicate a member as a petal has rather thickened cell walls. 
The sub-epidermal tissue is made up of thin-walled paren- 
chymatous cells (Fig. 26 a Sub.). The section of the petal was made 
at right angles to its length in all cases in Fig. 26. 
RESUME. 
The following facts are characteristic of the plant :— 
1. The rootstock is developed from the hypocotyl and part 
of the epicotyl, some of the former, however, soon disappears. 
2. ‘The development of plantlets from old roots by “‘vegeta- 
tive propagation”’ from the region surrounding and including the 
pericycle. Vegetative propagation was found to be common in 
the members of the Crocion group. 
3. In primary roots the plerome, at all times, was diarch. 
4. In mature plants the secondary changes are most evident 
in the hadrome part of the mestome. It is noticeably large and 
compact in the rootstock and divided with the leptome in the stem 
into more less distinct strands. 
EXPLANATION OF FIGURES. 
Fig. 1. Seedling of Crocion achlydophyllum (Greene) Nwd. and 
Kacz., showing secondary brances (Srb.) of the primary root (Pr.), hypo- 
cotyl (H1), petioles (Pet.) and their cotyledons (Cot.). 
