8/3/06, 2112man Key to Narrowleaved Evergreens
Clarence E. Lewis (rev. by J.L. Saylor)
1. Winter buds inconspicuous or very small - Cryptomeria.
1. Winter buds very conspicuous.
2. Needles needle-like, not whorled, no groove in back of leaf.
3. Needles clustered on short spur-like branches - Cedrus.
3. Needles not clustered on short spur-like branches.
4. Needles born in a fascicle or sheath - Pinus.
4. Needles born single on stem.
5. Base of needle brown or woody and four sided - Picea.
5. Base of needle light green to dark green, and flat appearing.
6. Base of needle constricted into distinct petiole, no distinct leaf-like structure on young
stems - Tsuga.
6. Base of needle without distinct petiole.
7. Young stems covered with leaf-like structure - Taxus.
7. Young stems bare and not covered with leaf-like stuctures.
8. Base of needle somewhat constricted - buds long and pointed and with little or no
resin - Pseudotsuga.
8. Base of needle broader, buds short, blunt and often resinous - Abies.
2. Needles scale-like, or needle and scale-like, not whorled, leaves less than 1 in. long, no groove in back of
9. Needles scale-like and needle-like on same plant - Juniperus.
9. Needles mostly all scale-like.
10. White markings between the leaves in the backs of branchlets, cone round or ball-like
10. White markings absent, cones bell-like.
11. Branchlets flat, leaves with raised gland on underside, cone scales not hooked at tip - Thuja.
11. Branchlets angled and upright, leaves with depressed gland on underside (not easily visible),
cone scales hooked at tip - Platycladus.
2. Needles in a whorl at the end of each year's growth, leaves very thick, 4-5 inches long, with a groove on
the back of each leaf - Sciadopitys