cambium = A series of formative cells lying outside of the wood proper and inside of the inner bark, where new wood growth takes place.

The cambium is the new and growing tissue lying underneath the bark and on the outside of the growing wood.

foliose = bearing numerous leaves; leafy.

The monkey forages on foliose lichen and the young leaves and shoots of trees like Betula spp. and Sorbus spp

conifer = Any of various mostly needle-leaved or scale-leaved, chiefly evergreen, cone-bearing trees or shrubs such as pines, spruces, and firs.

The latest pawn in this environmental chess match is the Pacific yew tree, a scrubby conifer found from southern Alaska to central California and in Washington, Oregon, Idaho and Montana

deciduous = Shedding or losing foliage at the end of the growing season; pertaining to trees which lose their leaves in winter or the dry season

Because they shed their leaves every autumn and are furnished with a new set in the spring: 'deciduous' is Latin for 'falling off