Week 5 Keyed Trees

Identification Key
Tree one: American Sweetgum
Key to Groups: 1' (Leaves usually <8 in long, not sword-shaped; leaves simple or compound; leaf veins parallel/netted)
2' (Tree is a confier or broad-leaved tree, not a palm; leaves arise from branches)(
3' (Leaf blades broad and flattened -mostly angiosperm)
5' (Leaves simple (with undivided blades, deeply lobed leaves are still simple)
8' (Leaves attached alternately (1 per node))
9' (Leaf tip pointed or rounded, not notched or truncate)
14 (Leaves palmately veined and/or palmately lobed (with veins and lobes radiating outward from a central point) - Group 9
Group: 9 - 1' (Tree not bleeding milky sap; stipular ring scar present or not)
3' (Leaves Palmately lobed and lobes toothed or lobes smooth)
7' (Mature leaves 3.5 in. wide or greater, trees never thorny)
8' (Base of leaf stalk not swollen, stipule free, no ring scar around nodes)
9 (Leaves spicy when crushed, lobe margins regularly sawtoothed)
10 (Leaves mostly 5-pointed) - Sweetgum
Species: Liquidambar styraciflua

Tree two: Eucalypts (general)
Key to Groups: 1' (Leaves usually <8 in long, not sword-shaped; leaves simple or compound; leaf veins parallel/netted)
2' (Tree is a conifer or broad-leaved tree, not a palm; leaves arise from branches)
3' (Leaf blade broad and flattened - mostly angiosperm)
5' (Leaves simple (with undivided blades, deeply lobed leaves are still simple)
8' (Leaves attacked alternately (1 per node))
9' (Leaf tip pointed or rounded, not notched or truncate)
13 (Leaf margin smooth (without teeth or lobes) - Group 8
Group: 8 - Trees with alternate, simple, smooth leaves
1' (Flower clusters not resembling bottlebrushes)
3' (Leaves not phyllodes)
4' (Most leaves 3/4 in. wide or greater)
16' (Tree without milky sap)
18' (leaves unscented)
19 (Leaves with translucent dots when held to the light)
20 (Petals fused into a bad cap; fruit in a woody capsule) - Eucalypts (Gum Trees)
Species: Eucalyptus spp. (Gum Trees)