Is Antigonon Leptopus Leaves Edible for Torto

[gedong]

Hi All, in my backyard I have plant both hibiscus and antigonon leptpous (for decorative purposes) while the first one O intended to give to my tortoises regularly.

But in the process it turns out that the antigonon outgrown and can easily accesible by my tortoise, and this afternoon I caught one of them eating.

Is antigonon leaves edible for torto?

I have attached the sample of that leaves which have been eaten by one of my istar.

Thanks