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Myosotidium is a genus of plants belonging to the family Boraginaceae. This genus is represented by the single species Myosotidium hortensia, the giant forget-me-not[2] or Chatham Islands forget-me-not, which is endemic to the Chatham Islands, New Zealand. The biogeography is yet unresolved, but its ancestors are likely from the American continent, as Myosotidium hortensia was found to be sister to the South American plant genus Selkirkia[3] and both genera being sister to the North American genus Mimophytum.[4]Myosotidium hortensia is a fleshy herb with large orbicular somewhat fleshy leaves and appearingly parallel leaf venation. The inflorescence bears numerous blue flowers in the late spring. The relatively large blackish seeds are winged. It is much planted as a garden ornamental flower in New Zealand and elsewhere. In addition to the blue-flowered species, 'Alba', a white flowered cultivar is also popular in cultivation. In its natural habitat, M. hortensia occurs near beaches under the direct influence of sea-water spray and sea-winds.[3]

Scientific classification edit
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Boraginales
Family: Boraginaceae
Genus: Myosotidium
M. hortensia
Binomial name
Myosotidium hortensia

Myosotis hortensia Decne.[1]


  1. ^ "Myosotis hortensia". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 20 July 2008.
  2. ^ "Myosotidium hortensia". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 July 2015.
  3. ^ a b Holstein, N.; Chacón, J.; Hilger, H. H.; Weigend, M. (2016). "No longer shipwrecked—Selkirkia (Boraginaceae) back on the mainland with generic rearrangements in South American "Omphalodes" based on molecular data". Phytotaxa. 270 (4): 231–251. doi:10.11646/phytotaxa.270.4.1.
  4. ^ Holstein, N.; Chacón, J.; Otero, A.; Jiménez-Mejías, P.; Weigend, M. (2016). "Towards a monophyletic Omphalodes—or an expansion of North American Mimophytum". Phytotaxa. 288 (2): 131–144. doi:10.11646/phytotaxa.288.2.3.