I. LEAVES SIMPLE. | ||
---|---|---|
Leaves alternate | A | |
Outline entire | A C | |
Outline slightly indented | A D | |
Outline lobed | A E | |
Lobes entire | A E F | |
Lobes slightly indented | A E G | |
Lobes coarsely toothed | A E H | |
Leaves opposite | B | |
---|---|---|
A C | Ovate to oval, obscurely toothed | Tupelo |
A C | Ovate to oval | Persimmon |
A C | Also 3-lobed | Sassafras |
A C | Sometimes opposite, clustered at the ends of the branchlets | Dogwoods |
A D | Tremulous habit, oval | Poplars |
A D | Lanceolate, finely serrate, sometimes entire | Willows |
A D | Ovate-oval, serrate, doubly serrate |
Birches
Hornbeams |
A D | Oval, serrate, oblong-lanceolate, veins terminating in teeth |
Beeches
Chestnut |
A D | Ovate-oblong, doubly serrate, surface rough | Elms |
A D | Ovate to ovate-lanceolate, serrate, surface slightly rough | Hackberry |
A D | Outline variable, ovate-oval, sometimes lobed (3-7), serrate-dentate | Mulberry |
A D | Ovate, serrate, oblong |
Shadbush
Plums Cherries |
A D | Oval or oval-oblong, spines, evergreen | Holly |
A D | Broad-ovate, one-sided, serrate | Linden |
A D | Obovate, oval, lanceolate, oblong | Chestnut oaks |
A D | Broad-ovate to broad-elliptical, thorny | Thorns |
A E F | Lobes rounded | Sassafras |
A E F | Base truncate or heart-shaped | Tulip tree |
A E F | Obtuse, rounded lobes | White oaks |
A E F | 3-5-lobed, white-tomentose to glabrous beneath | White poplar |
A E G | 5-lobed, finely serrate | Sweet gum |
A E G | Irregularly 3-7-lobed, serrate-dentate with equal teeth | Mulberry |
A E H | Pointed or bristle-tipped lobes | Black oaks |
A E H | Coarse-toothed or pinnate-lobed, short lobes ending in sharp point | Sycamore |
B | Outline entire, ovate, veins prominent | Flowering dogwood |
B | Outline serrate, apex often tapering | Sheep berry |
B | Outline lobed | Maples |
II. LEAVES COMPOUND. | ||
---|---|---|
Leaves pinnately compound | I | |
Leaflets alternate | I A | |
Outlines of leaflets entire | I A C | |
Leaflets opposite | I B | |
Leaves bi-pinnately compound | J | |
I A | Outlines of leaflets with two or three teeth at base. | Ailanthus |
I | Outlines of leaflets serrate |
Sumacs (except Poison sumac)
Mountain ashes Walnuts Hickories |
I A C | Leaflets oval, apex obtuse | Locusts (except Honey locust) |
I A C | Leaflets oblong, apex acute | Poison sumac |
I B | Outlines of leaflets entire | Ashes (except Mountain ashes) |
I B | Outlines of leaflets serrate | Ashes (except Mountain ashes) |
I B | Leaflets irregularly or coarsely toothed, 3-lobed or nearly entire | Box elder |
J | Irregularly bi-pinnate, outlines of leaflets entire, thorns on stem and trunk | Honey locust |