:

1. Superior Ovary (Hypogynous): The gynoecium occupies the highest position. Examples explicitly cited are mustard, China rose, and brinjal .
2. Solanaceae Family: Plants like potato (Solanum tuberosum) have a superior ovary .
3. Liliaceae Family: Onion and tulip belong to this family, which is characterized by a superior ovary (Standard NCERT Biology content).
4. Inferior Ovary (Epigynous): The ovary is situated below the other parts. Examples explicitly cited are guava and cucumber .

Therefore, the plants with superior ovaries are: China rose, mustard, brinjal, potato, onion, and tulip (Total: 6).