The Ketembilla
Dovyalis hebecarpa, Warb.
The ketembilla is a better fruit than its congener the umkokolo,
but the plant is somewhat more limited in its distribution. From its
native home in Ceylon it has been brought to the Western Hemisphere,
where it may now be found in a few gardens in Florida, Cuba, and
California; elsewhere it is little known. Since it is more tropical in
its requirements than the umkokolo, it is not suitable for cultivation
in the Mediterranean basin, except perhaps in the most favored
situations.
In growth and habit the plant is less robust than
its congener, although it reaches about the same ultimate height, 15 to
20 feet. The branches are slender, often drooping under the weight of
their fruit, and the thorns are long and sharp, but not so formidable
as those of the umkokolo. The leaves are lanceolate or oval in outline,
acute, entire or subserrate, and 2 to 4 inches long. The fruit is of
the same size and form as that of the umkokolo, but maroon-purple in
color and more velvety on the surface. The purplish pulp is sweet and
luscious, with a flavor resembling that of the English gooseberry, a
fruit which the ketembilla suggests so strongly in appearance and
character as to give rise to the common name Ceylon-gooseberry. Aberia
Gardnerii, Clos., is a botanical synonym.
The plant does not
withstand drought as well as the umkokolo, and is injured by
temperatures considerably above 20°. While it succeeds in southern
Florida, the climate of most parts of southern California has usually
proved too cold for it. It likes plenty of moisture, both in the
atmosphere and in the soil, and under proper conditions bears enormous
crops of its attractive fruits.
The distribution of the sexes is
the same in this species as in the umkokolo, and it is, therefore,
necessary to insure the proximity of staminate and pistillate plants if
fruit is desired. It has been reported that isolated plants of both
species are sometimes fruitful, which suggests that they may in
occasional instances produce perfect flowers and not require
cross-pollination. If plants of such character are found, they should
be propagated by budding or grafting, since they would be of
considerable value. P. J. Wester reports that shield-budding is
successful. He says: "Use petioled, preferably spineless, not too old
budwood with tomentum still present; cut buds an inch to an inch and a
quarter long; age of stock at point of insertion of buds unimportant."
Propagation by seeds is easily effected, as with the umkokolo.
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