Habenaria medusae. Under normal conditions I usually have three tubers after the vegetation dies back. Last year, I let our Orchid Society have this plant for their annual show (just as it was starting to flower). Unfortunately the flower head was accidently sheared off whilst it was being loaded into the vehicle. The vegetative part of the plant didn't die back as normal, and remained fresh and green right up to the middle of Jan, when I cut it back. After the soil dried out I emptied the contents of the pot to see how may (if any) tubers were produced. I found one large, plump four inch tuber with signs of tiny new shoots I have since cleaned the tuber and planted it into a fresh loam compost. So, I shall have to wait and see what this year brings. The inflorescence in the images shown were 30 inches tall.