They could have spelt it right - Cytisus battandieri. ... Common Name: Pineapple broom. Genus: Cytisus Species: battandieri.
The flowers look very much like mullien, and give off a pineappple scent
Ah-Ha! Gorrit in the book now!
Also known as "Moroccan Broom"
"Semi evergreen, open shrub. Leaves have 3 silvery leaflets. Pineapple-scented yellow flowers appear in summer"
Grows to 20 ft high and 20 ft wide
Oh dear! A bad choice for a small garden.