Keys to Dicotyledon Families
| 1. Plants parasitic, growing within and flowering on trunks of Flacourtiaceae. | Rafflesiaceae |
| 1. Plants terrestrial, parasitic or saprophytic, never growing on tree trunks. | 2 |
2. Plants mushroom-like. Scale-like leaves alternate. Flowers in globular capitula; petals not fused into tube; ovaries inferior. Fruits 1-seeded achenes. |
Balanophoraceae |
2. Plants not mushroom-like. Scale-like leaves opposite. Flowers not in globular capitula; petals fused into tube; ovaries superior. Fruits multi-seeded capsules. |
Gentianaceae (Voyria & Voyriella) |
Key to Keys | Key 1. Achlorophyllous Magnoliopsida | Key 2. Herbaceous Terrestrial or Aquatic Magnoliopsida | Key 3. Climbing Magnoliopsida | Key 4. Epiphytic Magnoliopsida | Key 5. Tree Magnoliopsida | Key 6. Shrub Magnoliopsida