The capsule often (always?) contains only one seed with 
short woolly hairs and a hard shell. 
I have not examined the anatomy of the leaf. The primary 
cortex of the branches is similar to that of the two species of 
Convolvulus described above, as will be seen from fig. 53. 
The inner cortex, as in these species, includes secreting cells 
(fig. 53, A.1.), which as seen in 
longitudinal section stand in 
long rows like piles of barrels. 
(comp. HALLIER). Similar cells 
are found in the pith which 
also encloses leptome tissue 
(a generic character). 
Convolvulus 
fruticosus Pall. 
Grows on clayey or stony 
soil. An undershrub with stiff, 
spiny branches. The year- 
shoots issuing from the low 
knotted perennial parts are 
branched once, twice or three 
times. The branches, more 
especially the ones of second- 
ary order, are spread out or 
bent backwards; the branches 
of tertiary order and also the 
upper ones of secondary order 
are spines, of which the lower 
ones bear flowers. Each bears 
Fig. 54. Convolvulus fruticosus. Upper 
(A) and middle part (B) of a shoot. 
C: Scheme of branched year-shoot. 
August. 
only one terminal flower with small foliage-like prophylls 
each subtending a branch-spine which is generally leafless. 
After the flower and the two leaves have fallen off, a fork- 
shaped spine remains behind. (fig. 54 B, C). The upper thorns 
are unbranched. 
The leaves are small and lanceolate; the lower ones are 
the larger and may attain a length of about 2'/2 
while higher up they are shorter and narrower. In 
centimetres, 
the 
15* 
