This is my first (maybe only) posting to this forum, and I'm only doing it because I was interested in the detail of this inflorescence and a name was attached, so I know what it is (which is really unusual for me). There's a bit of a hint to the scale in noting how much is not in focus.
"No" on the three guesses so far. I looked up "anthesis" and that part seems correct, but it's not an aroid. People who know me have an additional hint in where I've been lately (so, it's not a BC native).
Not Banksia but yes on one of the other odd Australian flowers. Each of those flowers is teeny, but the plant is not small.
Yes, that's it. Xanthorrhoea quadrangulata, one of the "grass trees". It can get up to 6 feet tall, with the flower spike reaching 15 feet. This photo was taken at the Melbourne Royal Botanic Gardens. The tip of a Xanthorrhoea seed head was posted last year as a stumper. I don't remember seeing any of those.