dracophyllum longifolium, inaka or dragon leaf alpine plant grass tree native to new zealand, darran mountains, key summit

220 alpine altitude botanic branches christina crosscut darran dracophyllum dragon endemic ericaceae fiordland flora grass growth high inaka island key leaf leaves longifolium mount mountains national native nature new park phylogenetic plant protected rare routeburn ruahine shrub shrubs south summit threated track tree trees tundra uncommon years zealand