No "I" in there.
Ulmus parvifolia, var 'Catlin', is a sport of the common Chinese elm. It is
partly evergreen in mild climate and evergreen in the south. Its leaves are a
1/4" to 3/4" long and are a shiny dark green, lanceolate and smaller than
zelkova. John Catlin, a landscape designer in California, found this sport on
an Ulmus parvifolia or Chinese elm in a nursery in about 1953. Jim Barrett
named it Catlin Elm to honor the man who found it and to separate it from
the Chinese elm.
Ulmus parvifolia ,var 'Drake', USDA Hardiness zone 7 to 9. has small, dark
green leaves, sweeping, upright branches forming a rounded crown and
greater leaf retention being almost evergreen in CA and FL.
Ulmus parvifolia, var 'Dynasty', has smooth dark grey bark, smaller leaves
and is vase-shaped, with red fall color in the north.
Ulmus parvifolia, var 'Frosty', has a small (.75 inch long) white-margined
leaf which may revert back to green.
This tree is a Drake elm. Small leaves, dark green and often confused with Catlan elm. It is due to the fact that internodes will continue to increase with shoot elongation and leaf size will get larger. Catlan's hold true to leaf size and internode length stays very short, seldom larger than 3/8 inch. Leaf size stays at around 1/4 or shorter. Dark green.
I suspect you have a Drake elm just by looking at the leaves and internode length.. But....as far as I'm concerned it is the best elm for bonsai there is.
Doh!)
