The TRUNK:
I know 43 mature tree of cambuca, 14 in Sao Paulo, and 29 in Santa Catarina
There no difference in Cambuca, the red and the grey are the same Cambuca, do not have different colors, for some reason in a few years it gets the more reddish trunk, but the same tree is grey trunk in others years
The small fruit in the red trunk Cassio said, is because is not season , is the second blooming, a few flower and small fruits, is the last fruits of the season
I dont know if you remember I has posted in the forum pictures of a big tree cambuca around 200 years old in the forest, the trunk was very red, but all seedling around the tree have grey trunk
In my farm have a tree cambuca around 8 years old, begining the year the trunk are red, now are gray,
The size of the fruit is relative, last year I harvest for one tree 8.800 fruits, big fruits, this year the same tree I harvest 2.300 fruits , small fruits
The size of fruit is not related to the color of the trunk, because do not have red or grey trunk, all is only the same Cambuca tree
The Leaves :
I have several seedling from 2013, all seeds from the same tree, some seedling the leaves are big and wide, others seedling is regular size leaves, The difference is so significant that my employee thought was another specie of fruit, I said no, is the same , I will take pictures to post
Same in a big Cambuca tree you can find small rounded leaves and big elongated leaves in the same tree, Who has a large tree of Cambucá can check this
SOrry for my bad english