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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Boraginales

Familia: Boraginaceae
Subfamilia: Boraginoideae
Tribus: Cynoglosseae
Genus: Myosotidium
Species (1): M. hortensia

Myosotidium Hook., 1859

Typus: M. hortensia
(Decne.) Baill.

Native distribution areas:

Continental: Australasia
Regional: New Zealand
Chatham Is.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Hooker, W.J. 1859. Curtis’s botanical magazine, comprising the plants of the Royal Gardens of Kew, and of other botanical establishments in Great Britain; with suitable descriptions. Vol. LXXXV [= Vol. XV of the third series.] 5091–5156 pl. Lovell Reeve, London. BHL Reference page. : 85: t. 5137.

Additional references

Holstein, N., Chacón, J., Hilger, H.H. & M. Weigend, 2016: No longer shipwrecked—Selkirkia (Boraginaceae) back on the mainland with generic rearrangements in South American “Omphalodes” based on molecular data. in: Phytotaxa 270(4): 231–251. Full text: [1]


Govaerts, R. et al. 2020. Myosotidium in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Sep 26. Reference page.
International Plant Names Index. 2020. Myosotidium. Published online. Accessed: Sep 26 2020. 2020. Myosotidium. Missouri Botanical Garden. Published on the internet. Accessed: 2020 Sep 26.
Catalogue of Life: 2021 Annual Checklist

Vernacular names

Myosotidium is a genus of plants belonging to the family Boraginaceae. This genus is represented by the single species Myosotidium hortensia, the Chatham Islands lily, giant forget-me-not[2] or Chatham Islands forget-me-not, which is endemic to the Chatham Islands, New Zealand. In the Maori language, it is known by the name kopukapuka.[3][4]

The biogeography is yet unresolved, but its ancestors may have originated from the American continent, as Myosotidium hortensia was found to be sister to the South American plant genus Selkirkia[5] and both genera being sister to the North American genus Mimophytum.[6] 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.[5]

"Myosotis hortensia". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 20 July 2008.
"Myosotidium hortensia". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 July 2015.
"New Zealand Native Plants Photography - recent NZ natives additions Nov 2005 page 2". Retrieved 26 July 2021.
"Kopukapuka". Kopukapuka | Items | National Library of New Zealand | National Library of New Zealand. Retrieved 26 July 2021.
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.
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.

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