谁有彩叶植物英文文献啊？ 急急急！！！！

Colour Leaf Trees
With their own distinctiveness, colour leaf trees look attractive in any setting. An alternative to other varieties, with individual colouring giving profound autumn colour which brightens up any garden.

Variegated sycamore (Acer Pseud Leopoldii)
A deciduous, small spreading tree. The variegated sycamore has beautifully marked leaves which turn from a yellowy pink to a green splashed with yellow and white later on. Best grown in full sunlight.

Purple Leaved Sycamore (Acer pseudo. Spaethii)
One of the fastest growing sycamores. Bearing distinct two tone colour leaves, this tree has purple leaves with a green underneath. The purple leaved sycamore provides good autumn colour with leaves turning buttermilk to yellow/orange during the autumn.

Claret Ash (Fraxinus exc. Raywood)
Growing to about 2 metres, the claret ash has glossy green foliage turning claret to deep purple in autumn. This narrow tree broadens with a