These apps can't discern between texture, taste, and smell so I'd confirm with a facebook group (though having said that this specific example is almost certainly lambs quarters), it's the only reason I use fb these days. Even poison control directs people who have ingested plants or mushrooms and need an ID to a facebook group.IDK The leaves look broader than the Wikipedia picture. The Lambs Quarters I know of are silvery and feel silkie and fuzzy like their name implies. Down load the app "Picture it" It's free. You take a picture of the plant and it tells you what it is.
Plant Identification
Mushroom Identification
EMERGENCY ONLY Identification Group (just in case anyone was curious about the facebook group PC refers to)