I found some S habrochaites plants last summer with 3 or more locules. I'm excited about that. More nodules usually means larger fruits.
There are a couple phenotypes of plant architecture in the S habrochaites population.
The leaves of the F2 of the interspecies hybrids with domestic tomatoes are interesting.
higher resolution photo
These fruits are G2/G3 of the interspecies crosses between domestic tomatoes as the mother and S habrochaites or S pennellii as the pollen donors. Flavors of some of them are astonishing. Fruity. Sweet. High ummami. Tropical. Mmm Mmm Mmm!!!