The Divine Farmer's Classic of Materia Medica lists Cinnamon, Pine, Sophora, Lyci (the root bark, not the more familiar Gogi berry), "ArborVitae" (Platycladus orientalis), Elm, Jujube, Vitex, Magnolia, Eleuthero, Eucommia, Privet, Ruihe (Prinsepia uniflora), and Fuling. Many of these are not technically trees, and Fuling (Poria cocos) is not even a plant, but fungus. None-the-less, there are important medicinals listed that are probably either in your own materia medica or should be.
Cinnamon (Cinnamomum cassia) is listed as Mugui or as high-grade Cinnamon: Jungui. The former listing reads:
Treats counterflow cough with ascent of qi, bound qi, bi impediment in the throat, and vomiting and retching; disinhibits the joints; and supplements the center and boosts qi. Consumed over a long time, it facilitates the breakthrough of spirit illumination, lightens the body, adn staves off aging.
Treats the hundred diseases, nurtures the essence spirit, harmonizes the complexion, and serves as advance emissary for all sorts of medicinals. Consumed over a long period of time, it lightens the body, staves off aging, creates a brilliant glow on the face, and makes one beautiful and attractive like an adolescent.
I have already discuss Pine extensively (such as here: www.nathanielwhitmore.com/evergreens and on the Survival Cache blog: survivalcache.com/medicinal-uses-of-pine-trees-and-their-relatives-in-the-northeast-... which will be followed by future articles explanding on the subject of medicinal uses of Pine). I only want to mention here that the text discusses the rosin, Songzhi, or pitch, Songgao or Songfang, in much the same way Native Americans used native Pines, for "welling-anscesses, flat abscesses, malign sores, open sores on the head..."