Which plants are lianas? A: Wisteria sinensis B: Gardenia jasminoides C: Quisqualis indica D: Parthenocissus tricuspidata

Tyrian purple was first extracted from A: Isatis tinctoria B: Gardenia jasminoides Ellis C: Rubia tinctorum D: Bolinus brandaris

Which of the following plants does not have white flowers? A: Michelia chapensis Dandy B: Gardenia jasminoides C: Magnolia denudata Desr. D: Cerasus serrulata (Lindl.)