80. Tree not conspicuously
spreading upward, maintaining one central trunk through most
of its height, lower branches curving downward; two-year older
branches often forming conspicuous corky ridges; fruit glabrous
over the face of the seed.
|
Ulmus thomasii |
80. Tree spreading
upward, the trunk typically dividing quickly into 2 or more
major portions, lower branches clearly rising; two year and
older branches not forming conspicuous corky ridges; fruits
pubescent on the face of the seed.
|
81 |
|
