ng frosts or
other cause.

A few members of NNGA have manifested an interest in the honey locust
and the Chinese jujube. Both of these trees grow well in this region
with a minimum of care. The Oriental persimmon, like the nut trees,
requires more than casual attention and ordinary growing conditions.

The Chinese jujube, a little known but hardy and attractive tree may
deserve more attention in the southwest. I have trees of the Li and Lang
varieties which bear annually and have never been bothered by insects or
disease. I am not overly enthusiastic about the fruit but understand it
"compares favorably with the fig and date in food value. Dried jujubes
carry more protein than dried figs or dates and more (50%) sugar than
figs."--T.A.E.S. Bulletin no. 41. But the jujube has the disagreeable
habit of sending up root sprouts which are a nuisance to destroy and,
because the tree is grafted, the sprouts are worthless seedlings. It has
occurred to me that this bad feature of the jujube might be partly
offset if cuttings of the improved varieties could be made to grow by
means of some of the root inducing chemicals.

Propagation of the Hickories[1]

F. L. O'ROURKE, _Department of Horticulture, Michigan State College_

The genus _Carya_ comprises all the hickories and pecans found in the
United States. The eighth edition of Gray's Manual of Botany lists the
following species as being native to the United States:

[1] The survey of literature pertaining to this review was completed in
August, 1952.

_Carya aquatica_--Water hickory, Bitter Pecan
_Carya cordiformis_--Bitternut, Swamp Hickory
_Carya glabra_--Pignut
_Carya illinoensis_--Pecan
_Carya laciniosa_--Shellbark, Kingnut
_Carya ovalis_--Sweet Pignut, False Shagbark, Red Hickory
_Carya ovata_--Shagbark
_Carya pallida_--Pale Hickory
_Carya texana_--Black Hickory
_Carya tormentosa_ (C. alba)--Mockernut

Nut growers are interested primarily in the pecan and the shagbark,
although a few selections have been made of the shellbark species. The
bitternut is quite often used for rootstocks for the shagbark and
shagbark hybrids.

Hickories, like other nut and tree species, do not come true from seed,
so superior selected clones are propagated by budding and grafting on
other trees known as rootstocks. These rootstocks are produced from
seed.

Seed Propagation

Investigations by Barton(1) showed that some seedlings were produc