162 
stigma abnormal. In flower II the corolla between two lobes 
is split up’), for the rest the flower is normal, but judging 
from the position of the lobes and of the stamen turned to the 
right as much as '/, of a circle. 
2. Tetramerous flower. Fig. 69. Four segments of the calyx, 
a, 6, c, d, four corolla lobes, of which e and / unstriped, g 
and A each with two dark stripes and a stamen between them, 
staminodes between the other petals. 
3. Pentamerous flower. Fig. 70. Corolla five-lobed, each lobe 
with three dark stripes, between 7 and j the tube is split up 
midway. Stamens five, of which that between 7 and j has three 
anther-cells and a filament that indicates doubling. This sta- 
men springs from the junction of two projecting ridges at 
either side of the cleft in the corolla. 
4. Synanthy. Coalescence of the peduncles as in I. There 
are 9 calyxlobes, of which one placed at the boundary of both 
flowers is evidently equivalent with two. Corollas quite free, in 
flower I three segments are unstriped, the two other ones 
marked with resp. two and three stripes. Only between these 
there is a stamen, whereas there are staminodes between the 
other lobes. In flower II three segments are unstriped and two 
bear two stripes each. Also in this flower only one stamen 
between the striped lobes, for the rest staminodes. 
5. On the same plant there is a stalk with two fairly ripe 
fruits, which are twisted round one another to the right, the 
fruitstalks united almost as far as the top. 
6. Young pitchershaped leaf. 
ACANTHACEAE. 
Acanthus montanus T. And. 
Habitat Tropical Africa. 
Coll. October and November 1895. 
In order to facilitate a judgment of the way in-which some 
Acanthus-leaves deviate we give beforehand a description of a 
normal leaf. 
1) Psnzie has made the same observation in his garden in Genoa, Lc. Il, p- 224. 
