Which of the following floral formulas correctly represents the botanical family Solanaceae?
Answer and explanation
Correct answer: C. Br ⊕ ⚥ K(5) C(5) A5 G(2) (with superior ovary, epipetalous stamens, and syncarpous gynoecium)
- Step 1: Solanaceae (potato/nightshade family) is characterized by actinomorphic, bisexual flowers with a persistent calyx of 5 fused sepals and corolla of 5 fused petals .
- Step 2: The androecium consists of 5 epipetalous stamens (), and the gynoecium is bicarpellary syncarpous with superior ovary and obliquely placed swollen placenta ().
Answer
Br ⊕ ⚥ K(5) C(5) A5 G(2) (with superior ovary, epipetalous stamens, and syncarpous gynoecium)
Why not the others: '⊕ ⚥ K2+2 C4 A2+4 G(2)...' is the floral formula of Brassicaceae (Cruciferae); '% ⚥ K(5) C1+2+(2) A(9)+1 G1...' is the floral formula of Fabaceae; 'Br ⊕ ⚥ P(3+3) A3+3 G(3)...' is the floral formula of Liliaceae.
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