My question involves an eviction in the state of: CA

I gave my notice to move out, but have been having disputes over roommate wanting me to pay partial rent for next month. We begrudgingly got that issue settled, but we've had a few arguments since...And she threatened to evict me immediately.

I'm not on the lease, nor do I have any written leases with said roommate. I had previously thought that the landlord knew I would be living here, but I recently found out (by eavesdropping) that the roommate lied to landlord, saying no one extra was living here (or else landlord would increase rent).

What are my rights here?