This small species from New Zealand is not much like the other Dicksonias in its general appearance, but it is nevertheless an attractive fern.  Although very cold-hardy (at least 20°F), this species usually forms a prostrate, creeping trunk; and is not really a tree fern.  Sometimes, however, it will form a small trunk up to 6' tall.  It often grows in clumps like Lophosoria quadripinnata.  It has not really found its way into cultivation in the Northern Hemisphere and remains a collector's item.