Big Trees Today offers Carolina Silverbell for decorative purposes in gardens and landscape design projects. Visit our website for further information. Carolina silverbell (Halesia tetraptera) matures to a height of about 25 to 30 feet. It has large, dark green leaves, which contrast nicely with the pendulous white flowers in spring. Although it... Halesia tetraptera - Mountain Silverbell, Carolina Silverbell, 4-wing Silverbell. Halesia tetraptera is a tree with white bell-shaped flowers that persist for about a week in the springtime. Depending on your choice of authority, there are two or three species of Halesia. Anacua Common Name: Anacua Ehretia anacua Tree Size: Medium Leaf Type: Evergreen Comments: Drought-tolerant native with gnarled trunk and sandpapery leaves.