Among china rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?

In the hypogynous flower the gynoecium occupies the highest position while the other parts are situated below it. The ovary in such flowers is said to be superior, e.g., mustard, china rose and brinjal. Potato belongs to Solanaceae family and has hypogynous ovary. Onion and tulip belong to Liliaceae family and therefore they have hypogynous ovary.Therefore, mustard, china rose and brinjal, potato, onion and tulip have hypogynous ovary.