Myosotidium hortensia,  Kopakopa, Kopukapuka  or Chatham Island forget-me-not is endemic to the Chatham Islands. It is found on Chatham (Rekohu), Pitt, South East, Mangere and most of the smaller islands, islets and some rock stacks. This nationally vulnerable plant is found on coastal cliffs, rock outcrops, sandy and rocky beaches just above the strand zone and coastal forest openings. It is a robust, perennial herb, forming patches up to 1m tall by 1.0–1.5m diameter with a stout, cylindrical  root stock that gets woody with age,  and rather  large fleshy  dark green to yellow-green leaves. Its flowers are produced from October to April, in dense clusters 15cm wide and range from pale to dark blue. This is a coastal plant in nature, and it prefers a moist semi shaded spot, but will tolerate  exposed site and medium frosts.  Its nationally vulnerable status is due is because it has been reduced to scattered remnants by farming, competition from marram grass (Ammophila arenaria) and the depredations of feral animals, such as cattle, horses, sheep, possums, pigs, rats and weka who trample, uproot and browse plants. Possums, rodents, and weka are serious predators of flowers and fruits. Weed encroachment, especially by marram grass, has eliminated this species from loss of its former dune habitat. Removing whole plants for private use in gardens is an on going problem for the more accessible populations. Coastal development destroyed the only known white-flowered wild plants, and remains a potential threat elsewhere.