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From: Austin, TX
Region: Southwest
Topic: Trees
Title: Unusual green fruit
Answered by: Anne Bossart
Although it is impossible to do a positive ID without seeing the fruit or a picture of it, the first thing that comes to mind is Osage orange, also known as Horse apple. If the fruit looks like a tennis ball and your kids think it looks like a "brain fruit" it could be Maclura pomifera. It was a plant that was widely used in the Northeast US and Canada as a hedgerow plant by farmers to keep livestock contained (because of its thorny branches) and does occur in Texas.
Check out the link to our database and see if you see a resemblance.
Maclura pomifera (osage orange)
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