Looks to me like some kind of green caladium.

Possibly an Arum.

Yes, Arum italicum I'd say too.

It is a real pest in the open garden in many areas, though in a pot it should be OK.

I researched Arum Italicum and recognized the stalks of red berries. Thank you all so much for your responses.

Re those berries. You can see some seedlings already growing amongst the strappy leaves. (Liriope?)

It does look like liriope, doesn't it? Actually it's sternbergia lutea, a fall blooming bulb. I knew there were a few arum italicum in the soil, but they really took off when the new bulbs went in along with some good soil and fertilizer.

Try to get all the Arum out of the Sternbergia. The yellow beauty is no match for the thuggish Arum tubers in a fight.

Sounds like good advice. I have tried pulling them out, but the roots stay behind.

I don't have A italicum but I do have our native A maculatum. Pulling doesn't work. You need to carefully dig the area over removing every little bit of root/tuber as you go. You'd need to dig up the Sternbergia, clean up the area, check the soil round the removed Sternbergia bulbs too, and then replant.

Thank you! Another job for springtime.

Do it during the summer when the Sternbergia are dormant.