Theobroma grandiflorum, cupuaçu, is a close relative of the famous chocolate plant, T. cacao.
T. grandiflorum is a very tropical species and will not thrive in subtropical locations. It is found in lowlands and tropical areas from Southern Venezuela to Northern Bolivia. This species has a high tolerance to infertile soils which can be found in highly weathered tropical areas. This makes this species a great candidate for agroforestry projects. This species is self incompatible and will require more than one plant in order to get proper pollination and fruit set.
Family: Malvaceae
Name: Theobroma granidflorum
Common Name / Native Name: Cupuaçu
Range: Honduras, Venezuela, Brazil, Bolivia
Sun: Part Shade/Full Sun
Height: 40 + feet
Width: 30 + feet
Foliage: Large lanceolate leaves
Flower: Small flowers, very beautiful and interesting flowers, small but stunning.
Fruit: Large pods similar to Cacao pods but moreso resembling potatoes
Soil Type/ pH: Prefers Acidic Soil
USDA Climate Zones: 10a+
Cold Hardiness: Not tolerant of frosts, tropical plant
Edibility: A very pleasant Theobroma spp. Highly sought after and great to have if you have the tropical climate for it.
Age to maturity: Unknown, 7+ years?
Sources:
https://en.wikipedia.org/wiki/Theobroma_grandiflorum
http://www.plantsoftheworldonline.org/taxon/urn:lsid:ipni.org:names:825580-1