This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
Trees with a balsamic juice. Leaves alternate, glabrous, deciduous, palmately lobed; petioles long and slender. Male and female flowers separate, with four large bracts forming an involucre at the base of each head. Petals none. Capsules woody, several together, splitting between the cells. Seeds several, angular, shortly winged. There are only three species known, one from the Levant, one North American, and one lately discovered in the island of Formosa. The name was given in consequence of one species producing the liquid storax.
1. L. Styraciflua. - This is a small erect-growing tree of elegant appearance, especially towards Autumn, when the leaves change to a bright red, and remain on the tree for some time afterwards. In foliage it resembles some of the Maples, but the leaves being alternate it is readily distinguished. North America.
2. L. imberbe, syn L. orientalis. - Very near the foregoing, but of a more shrubby habit; the palmate usually 5-lobed leaves are scattered along the branches, not tufted at the extremities, and the main divisions of the leaves are again lobed. A native of the Levant, and rare in British gardens.
Corylopsis spicata is a handsome deciduous Japanese shrub with Hazel-like leaves and drooping bracteate spikes of yellowish fragrant flowers produced in Spring before the foliage is developed.