1. Picea pungens   spruce   pine   hickory   walnut   Hint Half-n-half Clue   2. Quercus velutina   oak   spruce   walnut   ash   Half-n-half Clue   3. Carya ordorata   hickory   sycamore   oak   birch   Half-n-half Clue   4. Acer rubrum   cedar   ash   maple   oak   Half-n-half Clue   5. Platanus occidentalis   maple   sycamore   birch   hickory   Half-n-half Clue   6. Pinus aristata   maple   hickory   pine   cedar   Half-n-half Clue   7. Hibiscus lasiocarpus   hibiscus   ash   birch   pine   Half-n-half Clue