How about Comfrey...? Doesn't look like Italian Arum to me anyhoo. Do you remember ANYTHING about the flowers? Check this out...https://en.wikipedia.org/wiki/Comfrey
This is plantain and I went out to check. Here is a link for different views of plantain, different species. Great to know what plants to eat or not eat in the wild. Plantain is great, dandelion is super, nettles are yummy...but please take care to KNOW what it is you are eating, sometime a little is fine, a bit more is toxic.plantain