Capsicum baccatum
The South American ajís - Aji Limon, Aji Amarillo, Bishop's Crown. White flowers with yellow-green spots on the petals, tall plants and bright, fruity heat.
Capsicum baccatum is the ají group: Aji Amarillo, Aji Limon, Bishop's Crown and most of the chillies at the centre of Peruvian and Bolivian cooking.
The flowers give it away
Baccatum is the easiest of the five to identify, and you do it by looking at the flower rather than the pod. The petals are cream or white with yellow-green or tan blotches towards the base. No other cultivated species has them.
That matters, because the pods are all over the place. The long tapering Amarillo, the lantern-shaped Bishop's Crown with its three wings, small round types and a good deal else all sit in this one species. Shape will not tell you what you have; the spots will.
Growing
Baccatum plants get big. Tall, spreading, and usually needing a cane by midsummer, so give them more room than an annuum and pot them on before they go rootbound.
They are productive once established and generally more forgiving of a cool British summer than chinense, though no more frost-hardy. The heat tends to be moderate, with a bright, fruity, almost citrus character rather than the flat burn of a superhot.
"Ají" just means chilli across much of Spanish-speaking South America. A pepper called ají something is not necessarily baccatum.
Compare Capsicum pubescens, the other South American species, which has purple flowers and black seeds.
