21.   The deep lavender-purple flowers have prominent scarlet red stigmas.

22.   The luffa-producing flowers will have small fruit visible behind the blooms before they open.

23.   The showy, papery white flowers have yellow throats, and blooms are followed by fleshy drupes, which are eaten by wildlife.

24.   The towels have to be folded just so, the fluffy bathrobes have to hang behind the door of the bathroom and the flowers have to be fresh.

25.   Their leaves are narrow, rather than heart-shaped like the common types, and each flower has a smaller petal.

26.   They are often identified as perennials, and their flowers have the sweetest and most pronounced aroma.

27.   All flowers have a white or contrasting centre to a wide range of strong colours.

28.   Each flower has six sepals and six petals.

29.   Each flower has five petals, five sepals, five stamens and a superior ovary.

30.   Each flower has three stamens, long and swollen, in the middle of their stalks.