This is a small tree about 15 feet tall, too much entwined with others to get a decent picture of the whole tree. It is of no particular shape. The leaves appear darker green than in this picture. The interior of the fruit is soft like a pear, and it tastes rather like a sour pear. Thanks for your help.
I do not believe it is a loquat. The leaves of my tree are very smooth and shiny, unlike the loquat leaves with which I am familiar. I can say the same for guava, and the guavas I know don't have a pucker at the bottom of the fruit. I have lived here for three years and this is the first time it has born fruit. I never noticed flowers, and I pass by the tree often, so the flowers must be inconspicuous. The trunk is reddish brown. The fruit in the picture was collected off the ground. It was very, very soft, like and over-ripe pear and the flesh turned brown after I cut it open.
Well, I'm going to have to eat my words, if not this fruit. Although this doesn't look anything like the other guavas I have growing in my yard, I was able to find at least one picture of a guava tree online that did have similar leaves, if not fruit. I think you're right, nel5397. Now, what kind is it?
Well, nonconformist7, I'm not botanist, and I can certainly be wrong. I looked at your guavas. Campomanesia lineatifolia and psidium guajava seem to have leaves like the other guavas in my yard, but psidium chinense is certainly a possibility. Is psidium chinense the same as psidium cattleianum subsp. lucidum? I thought it was psidium cattleianum subsp. lucidum (lemon guava or yellow strawberry guava) because I read it had naturalized and become invasive in Hawaii so I figured the odds favored that variety.
P. chinense, P. littorale and P. cattleianum are the same apparantly, at least from what I was reading. Cattley or Peruvian Guava. The red fruited variety is known as Strawberry Guava, and the yellow fruited one is Lemon Guava (subsp. Lucidum). I asked some of my friends on Kauai and they said the Hawai'ian name is "Waiawī". They are also highly invasive there. Sanjay told me that you can make punch, tarts, and chiffon with the fruits.
May I just point out to the powers that be that multiple latin names for the same plant do not help clarify the situation! :-) I will have to look up some recipes for guava punch. They are small fruits, but the tree is positively raining guavas now. I can see why it is invasive. I do like the juice they serve on Hawaiian Airlines flights. I believe that has guava in it. Mine are fairly sour, though.