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