# Myosotidium

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Monotypic genus of plants in the borage family Boraginaceae

Myosotidium Scientific classification Kingdom: Plantae Clade: Embryophytes Clade: Tracheophytes Clade: Spermatophytes Clade: Angiosperms Clade: Eudicots Clade: Asterids Order: Boraginales Family: Boraginaceae Genus: Myosotidium Hook. Species: M. hortensia Binomial name Myosotidium hortensia (Decne.) Baill. Synonyms[1][2] Myosotis hortensia Decne. Cynoglossum cyaneum Hook.f. Cynoglossum nobile Hook.f. Myosotidium nobile (Hook.f.) Hook.

***Myosotidium*** is a genus of plants belonging to the family [Boraginaceae](/source/Boraginaceae). This genus is represented by the single species ***Myosotidium hortensia***, the **Chatham Islands lily**, **giant forget-me-not**[3] or **Chatham Islands forget-me-not**, which is [endemic](/source/Endemic_(ecology)) to the [Chatham Islands](/source/Chatham_Islands), New Zealand. In the [Māori language](/source/M%C4%81ori_language), it is known by the name **kopukapuka**.[4][5]

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](/source/Selkirkia_(plant))*[6] and both genera being sister to the North American genus *[Mimophytum](/source/Mimophytum)*.[7] *Myosotidium hortensia* is a fleshy [herb](/source/Herbaceous_plant) with large orbicular somewhat fleshy leaves and apparently 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.[6]

## References

1. **[^](#cite_ref-1)** ["*Myosotis hortensia*"](https://npgsweb.ars-grin.gov/gringlobal/taxonomydetail.aspx?id=24811). *[Germplasm Resources Information Network](/source/Germplasm_Resources_Information_Network)*. [Agricultural Research Service](/source/Agricultural_Research_Service), [United States Department of Agriculture](/source/United_States_Department_of_Agriculture). Retrieved 20 July 2008.

1. **[^](#cite_ref-2)** ["Myosotidium hortensia (Decne.) Baill"](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:118872-1). *Plants of the World Online*. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved 26 December 2022.

1. **[^](#cite_ref-3)** [NRCS](/source/Natural_Resources_Conservation_Service). ["*Myosotidium hortensia*"](https://plants.sc.egov.usda.gov/plant-profile/MYHO4). *PLANTS Database*. [United States Department of Agriculture](/source/United_States_Department_of_Agriculture) (USDA). Retrieved 15 July 2015.

1. **[^](#cite_ref-4)** ["New Zealand Native Plants Photography - recent NZ natives additions Nov 2005 page 2"](http://www.nzplantpics.com/sfeature_galleries/_new_nz_native_plants/nz_native_plants_nov_05b.htm). *www.nzplantpics.com*. Retrieved 26 July 2021.

1. **[^](#cite_ref-5)** ["Kopukapuka"](https://natlib.govt.nz/records/22623429). *Kopukapuka | Items | National Library of New Zealand | National Library of New Zealand*. Retrieved 26 July 2021.

1. ^ [***a***](#cite_ref-holsteinetal2016a_6-0) [***b***](#cite_ref-holsteinetal2016a_6-1) 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](/source/Doi_(identifier)):[10.11646/phytotaxa.270.4.1](https://doi.org/10.11646%2Fphytotaxa.270.4.1).

1. **[^](#cite_ref-holsteinetal2016b_7-0)** 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](/source/Doi_(identifier)):[10.11646/phytotaxa.288.2.3](https://doi.org/10.11646%2Fphytotaxa.288.2.3).

Taxon identifiers Myosotidium Wikidata: Q1213832 Wikispecies: Myosotidium CoL: 5WFV EoL: 5360941 EPPO: 1MYDG GBIF: 4059525 GRIN: 7899 iNaturalist: 333486 IPNI: 4694-1 IRMNG: 1264887 ITIS: 835379 NCBI: 192331 NZOR: 249bf16a-cb9f-4e4d-9437-0b34a858d1f7 Open Tree of Life: 82992 PLANTS: MYOSO3 POWO: urn:lsid:ipni.org:names:4694-1 Tropicos: 40024195 WFO: wfo-4000025091

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Adapted from the Wikipedia article [Myosotidium](https://en.wikipedia.org/wiki/Myosotidium) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Myosotidium?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.