DICELLANDRA AND PHJEONEURON. 495 
Upper Nile basin: Monbuttuland, by the Kussumbo River 
(Schweinfurth, 3166 !). 
10. 
Fig. 11. 
12. 
13. 
14. 
15. 
16. 
Fig. 17. 
18. 
19. 
20. 
LINN. 
EXPLANATION OF PLATE 19. 
Figs. 1-10. Dicellandra Barteri, Hook. f. 
Longitudinal section through a bud (with the petals and stamens 
removed), showing a long and a short pocket corresponding to the 
long and the short anther which they contained, 
. Àn episepalous stamen, 
. Àn epipetalous stamen, 
. Top of ovary and style. 
A gland-hair from the annular appendage of the top of the ovary. 
A seed. 
. The same, in longitudinal section. 
. The same, in cross section. The shaded portion represents here (as in 
fip, 7) the embryo. In the cavity behind it some remains of the, 
tissue can be seen, the breaking up of which renders the raphe ulti- 
mately hollow. 
. Epidermis of the testa. 
Seetion through the testa, showing the two cell-layers of whieh it 
consists. 
Figs. 11-16. Pheoneuron setosum, Stapf. 
(Dicellandra setosa, Hook. f.; D. liberica, Gilg.) 
Longitudinal section through a flower (with the petals and stamens 
removed). [Norz. The ovary should be shown as connate with the 
calyx-tube, as described in the text. ] 
An episepalous stamen. 
An epipetalous stamen. 
A seed. 
The same, in cross section. 
The same, in longitudinal section. 
Figs. 17-20. Pheoneuron dicellandroides, Gilg. 
An episepalous stamen (side view). 
The same, in front view, with the filament removed. 
An epipetalous stamen (side view). 
Another epipetalous stamen, in front view, with the filament removed. 
JOURN.—BOTANY, VOL. XXXIV. 2 P 
