I have just started growing Australian terrestrial orchids. Here are a couple of my early winter flowering plants. Mallee Long Tongue Shell Orchid (Diplodium dolichochilum) - this one seems to multiply quite rapidly. It went from 15 tubers to 60 tubers in one year. Interestingly, the tubers produce either a growth or a flowering spike. You can see in the third photo where the spike comes straight out of the soil, not a plant. Out of the 60 tubers I only got 4 spikes. Bristly Helmet Orchid (Corybas hispidus) - you get these relatively large flowers on a single leaf. This group needs a lot of humidity to develop the flowers so I placed the pot in a small glass container. Otherwise the flower buds will blast. This species multiplies very fast.