Can you name this plant? Specimen #1

OK, all you cool climate gardeners out there - I need your help to identify some plants I found at the Botanic Gardens earlier in the week. Any ideas what this is?

It looks like some sort of orchid (?), knee-high with strappy leaves. Very delicate & pretty.

I have a few 'mystery-to-me' plants that I will post over the next few days. I'm afraid there are no amazing rewards for being clever enough to identify these - just the simple pleasure of discovering that you know something that someone else doesn't!!