Well, I posted these twice at July 2020 in the Garden – Welcome back!, mentioning both times that I forgot to look at the back of the flowers. Today, I also did not think to look at the back of the flowers, but that's because I didn't remember ever having seen it before and I had no idea it was an impatiens. I got halfway there on Pl@ntNet identify (plantnet.org), to Impatiens but not the right species, then had to query I can't remember what until I ended up on a Dave's Garden page for Impatiens tinctoria., which I queried here to discover that I was supposed to know this.
OMG, the back of the flowers - look how long those spurs are! There are fruit capsules in this photo too. There was a very visible label last week.