For those who guessed at my mystery plant flower, here is the entire plant from this year, with me for scale. This has been a year of drought, I lost a few plants as I had no time to water but most just didn’t grow well. Compare with the next plant of the same species but from last year when we had near-record rainfall.
Hard to believe these are the same type of plant, grown about a meter apart in consecutive years. I grow them for the leaves so a bit of a disappointment this year, though the flowers were actually larger than before, in compensation.