What type of hay is this?

[Konira]

Would someone happen to know what type of hay is this?
If it even is hay at all.

I have alot of this plant growing along my other type of hay that i usually feed the horses and guinea pigs, I'm wondering if this is actual hay and it's fine for them to eat this.

and this is very fresh too and wet on the inside, is it fine to feed them (The guinea pigs) hay this fresh or should i let it dry first?

Thanks in advance

 

[sport_billy]

I honestly don't know sorry....