What is This Plant?

I believe it is solanum virus, also known as tropical soda apple. It is part of the nightshade family and is considered an invasive species.

www.invasivespeciesinfo.gov/.../tropicalsoda.shtml

It looks like nightshade.

I am not sure what it is but I just looked up night shade and some varieties are poisonous. Potatoes, tomatoes, peppers, etc.

looks like a bottle gourd

Here are some other images of the plant.

Its leaves and stems have huge thorns.

This is Thai Eggplant! They are wonderful!

Have you opened one up? We have something that looks incredibly similar and it is airy with little furry soft pokey things in the middle.

Looks like some type of gourd

Oh my gosh. I had this dreadful plant in 4 places on my property which at one time was a dairy farm. I dug half way to China thinking NOW I surely have it all and it won't come back. Wrong! The thorns are horrid and even the leaves seem to have little prickles on them. The striped green berry looking things it produces stay round (reminds me of a round striped watermelon). They never get any larger than a blueberry in size and they stay hard. The plant grows like a bush, coming out of the ground it one stalk but then branching off into numerous stems. The branches don't get bark, they stay green and quite flexible. I wish someone would come up with the name for this devil-vine. I've now moved and fortunately my new yard doesn't have the thing. It seems invincible!

Actually, I have not tried to open one yet. I will have to try after the holiday.

The inside is spongy,white, with little brown seeds the resemble a flax seed.

deadly night shade, is what my Grandma called it.