The cocoa tree is the source of one of the world's most delicious and familiar products... chocolate.
A vigorous climber from India, Burma and Malaysia, laurel clock vine is a popular ornamental in the tropics.
Ginger is a well known spice produced from the rhizome (underground stem) of the tropical herbaceous plant, Zingiber officinale.
Okra is valued for its edible green fruits, said to be shaped like lady's fingers - one of its common names in British English.
The fast-growing sweet thorn, with its striking yellow pompom-like flowerheads, is perhaps the most well-used acacia in southern Africa.
The wood of Acacia nilotica was used by ancient Egyptians to make statues and furniture.
Although native to China, it was commercialisation of this climber in New Zealand (and clever marketing under the name kiwi fruit) that made it the popular and widespread fruit it is today.
Aloe vera has been described as a wonder-plant. The colourless jelly-like leaf parenchyma tissue is used in an extraordinary array of everyday products, from dishwashing liquid to yoghurt.
A vine native to Mexico and the USA, Cucurbita pepo has been domesticated for thousands of years and is the source of an astonishing variety of cultivated forms, including Halloween pumpkins, courgettes (zucchini)...
Baobab, Africa's iconic 'upside-down' tree, is pollinated by bats and bushbabies.