Myosotis matthewsii

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Myosotis matthewsii
Myosotis matthewsii.jpg
Status NZTCS NC.svg
Nationally Critical (NZ TCS) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Boraginales
Family: Boraginaceae
Genus: Myosotis
Species:
M. matthewsii
Binomial name
Myosotis matthewsii

Myosotis matthewsii is a species of flowering plant in the family Boraginaceae, endemic to the North Island of New Zealand. Lucy Moore described the species in 1961. Plants of this species of forget-me-not are perennial rosettes with bracteate inflorescences and white corollas.

Contents

Taxonomy and etymology

Myosotis matthewsii is in the plant family Boraginaceae and was originally described in 1961 by Lucy Moore. [3] [4] Myosotis matthewsii is morphologically most similar to M. spatulata, M. chaffeyorum , M. tenericaulis and M. albiflora. [5]

Holotype specimen of Myosotis matthewsii at Te Papa (WELT SP002562) SP002562 Myosotis matthewsii L.B.Moore WELT Te Papa 473039 30006.jpg
Holotype specimen of Myosotis matthewsii at Te Papa (WELT SP002562)

The type specimen of Myosotis matthewsii is lodged at the Museum of New Zealand Te Papa Tongarewa, Wellington (herbarium WELT). [6] [5]

The specific epithet, matthewsii, is named after Richard Henry Matthews (1835–1912), [7] a Kaitaia resident who made the first collections. [5]

Phylogeny

Pollen SP002571 Myosotis matthewsii L.B.Moore WELT Te Papa 473052 389705.jpg
Pollen

Myosotis matthewsii was shown to be a part of the monophyletic southern hemisphere lineage of Myosotis in phylogenetic analyses of standard DNA sequencing markers (nuclear ribosomal DNA and chloroplast DNA regions). [8] [9] Within the southern hemisphere lineage, species relationships were not well resolved. [8] [9]

Description

Myosotis matthewsii plants are rosettes. The rosette leaves have petioles 7–62 mm long. The rosette leaf blades are 6–22 mm long by 5–20 mm wide (length: width ratio 1.1–1.3: 1), broadly to very broadly obovate, widest at or above the middle, with an obtuse apex. Both surfaces of the leaf are sparsely to densely covered in straight, appressed (also some patent on upper surface only), antrorse (forward-facing) hairs that are oriented at an angle (upper surface) or parallel (lower surface) relative to the mid vein. Each rosette has 3–6 sprawling, creeping, subascending, unbranched to thrice-branched bracteate inflorescences that are 176–420 mm long. The cauline leaves are very similar to the rosette leaves, but become smaller, can be elliptic to ovate, and may have some curved hairs. The flowers are 8–43 per inflorescence and each is borne on a short pedicel with a bract. The calyx is 2–3 mm long at flowering and 3–4 mm long at fruiting, lobed to about three-quarters of its length, and densely covered in short, straight to curved (sometimes hooked near the calyx base), appressed to patent, antrorse hairs. The corolla is white and 4–8 mm in diameter, with a cylindrical tube, petals that are broadly obovate to ovate and flat, and small yellow scales alternating with the petals. The anthers are fully exserted. The four smooth, shiny, light to dark brown nutlets are 1.4–1.8 mm long by 1.0–1.4 mm wide and ovoid to broadly ovoid in shape. [5]

Myosotis matthewsii has M. uniflora type pollen. [10] [11]

The chromosome number of M. matthewsii is unknown.

Myosotis matthewsii flowers October–January, and fruits until March. [5]

Distribution and habitat

Myosotis matthewsii is endemic to the North Island of New Zealand in the Warawara Forest in Northland, from 65 to 300 m ASL. M. matthewsii is found on the forest floor in damp, shady, rocky sites of low broadleaf secondary forest. [5] [12]

Conservation status

The species is listed as Threatened - Nationally Critical in the most recent assessment (2017-2018) of the New Zealand Threatened Classification for plants. It also has the qualifiers "DP" (Data Poor), "EF" (Extreme Fluctuations), and "OL" (One Location). [5]

Related Research Articles

<i>Myosotis pansa <span style="font-style:normal;">subsp.</span> pansa</i> Species of flowering plant

Myosotis pansa subsp. pansa, also known as the Waitakere forget-me-not, is a subspecies of flowering plant in the family Boraginaceae, endemic to the North Island of New Zealand. Lucy Moore described the variety M. petiolata var. pansa in 1961, and it was transferred to a subspecies of M. pansa by Heidi Meudt, Jessica Prebble, Rebecca Stanley and Michael Thorsen in 2013. Plants of this species of forget-me-not are perennial rosettes with ebracteate inflorescences and white corollas with exserted stamens.

<i>Myosotis chaffeyorum</i> Species of flowering plant

Myosotis chaffeyorum is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Carlos Lehnebach described the species in 2012. Plants of this species of forget-me-not are perennial with a creeping habit, bracteate inflorescences, and white corollas.

<i>Myosotis bryonoma</i> Species of flowering plant

Myosotis bryonoma is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Heidi Meudt, Jessica Prebble and Michael Thorsen described the species. Plants of this species of forget-me-not are perennial with a creeping habit, bracteate inflorescences, and white corollas.

<i>Myosotis retrorsa</i> Species of flowering plant

Myosotis retrorsa is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Heidi Meudt, Jessica Prebble and Rowan Hindmarsh-Walls described the species. Plants of this species of forget-me-not are perennial with a prostrate habit, bracteate inflorescences, and white corollas.

<i>Myosotis umbrosa</i> Species of flowering plant

Myosotis umbrosa is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Heidi Meudt, Jessica Prebble and Michael Thorsen described the species. Plants of this species of forget-me-not are perennial with a prostrate habit, bracteate inflorescences, and white corollas.

<i>Myosotis colensoi</i> Species of flowering plant

Myosotis colensoi is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Thomas Kirk described the species in 1896. Plants of this species of forget-me-not are perennial rosettes with bracteate inflorescences and white corollas.

<i>Myosotis glabrescens</i> Species of flowering plant

Myosotis glabrescens is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Lucy Moore described the species in 1961. Plants of this species of forget-me-not are tightly compacted, perennial mats with bracteate inflorescences and white corollas.

<i>Myosotis pulvinaris</i> Species of flowering plant

Myosotis pulvinaris or the Cushion Forget-Me-Not is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Joseph Dalton Hooker described the species in 1867. Plants of this species of forget-me-not are perennial with a prostrate, compact, cushion habit, short bracteate inflorescences, and white corollas.

<i>Myosotis spatulata</i> Species of flowering plant

Myosotis spatulata is a species of flowering plant in the family Boraginaceae, endemic to New Zealand. Georg Forster described the species in 1786. Plants of this species of forget-me-not are perennial rosettes with bracteate inflorescences and white corollas.

<i>Myosotis tenericaulis</i> Species of flowering plant

Myosotis tenericaulis is a species of flowering plant in the family Boraginaceae, endemic to New Zealand. Donald Petrie described the species in 1918. Plants of this species of forget-me-not are perennial rosettes with creeping, sprawling bracteate inflorescences and white corollas.

<i>Myosotis uniflora</i> Species of flowering plant

Myosotis uniflora is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Joseph Dalton Hooker described the species in 1867. Plants of this species of forget-me-not are perennial with a prostrate, compact, cushion or mat habit, short bracteate inflorescences, and cream to yellow corollas.

<i>Myosotis lyallii <span style="font-style:normal;">subsp.</span> elderi</i> Subspecies of flowering plant endemic to New Zealand

Myosotis lyalliisubsp. elderi is a subspecies of flowering plant in the family Boraginaceae, endemic to New Zealand. Lucy Moore described Myosotis elderi in 1961, and Heidi Meudt and Jessie Prebble treated it as a subspecies of M. lyallii in 2018. Plants of this subspecies of forget-me-not are perennial with a prostrate habit, bracteate inflorescences, and white corollas with partially exserted anthers.

<i>Myosotis glauca</i> Species of flowering plant

Myosotis glauca is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. George Simpson and J.S. Thomson described M. pygmaea var. glauca in 1942, and Peter de Lange and John Barkla recognized it at species rank in 2010. Plants of this species of forget-me-not are perennial with a prostrate habit, bracteate inflorescences, white corollas, and often glaucous grey leaves.

<i>Myosotis brevis</i> Species of flowering plant

Myosotis brevis is a species of flowering plant in the family Boraginaceae, endemic to New Zealand. George Simpson and J.S. Thomson described M. pygmaea var. minutiflora in 1942, and Peter de Lange and John Barkla recognized it at species rank in 2010, as M. brevis. Plants of this species of forget-me-not are small and annual, with a prostrate habit, bracteate inflorescences, tiny white corollas, and brown or green leaves.

<i>Myosotis antarctica <span style="font-style:normal;">subsp.</span> traillii</i> Subspecies of flowering plant

Myosotis antarcticasubsp. traillii is a subspecies of flowering plant in the family Boraginaceae, native to New Zealand. Thomas Kirk (botanist) described the subspecies in 1921. Plants of this subspecies of forget-me-not are perennial with a prostrate habit, bracteate inflorescences, and white corollas.

<i>Myosotis venticola</i> Species of flowering plant

Myosotis venticola is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Heidi Meudt and Jessica Prebble described M. venticola in 2022. Plants of this forget-me-not are perennial with bracteate and prostrate inflorescences, and small, white corollas with partly exserted stamens.

<i>Myosotis pansa</i> Species of flowering plant

Myosotis pansa is a species of flowering plant in the family Boraginaceae, endemic to the North Island of New Zealand. Lucy Moore described the variety M. petiolata var. pansa in 1961, and it was raised to species level as M. pansa by Heidi Meudt, Jessica Prebble, Rebecca Stanley and Michael Thorsen in 2013. Plants of this species of forget-me-not are perennial rosettes with ebracteate inflorescences and white corollas and exserted anthers.

<i>Myosotis pansa <span style="font-style:normal;">subsp.</span> praeceps</i> Subspecies of flowering plant

Myosotis pansa subsp. praeceps is a subspecies of flowering plant in the family Boraginaceae, endemic to the North Island of New Zealand. Lucy Moore described the variety M. petiolata var. pansa in 1961, and it was transferred to a subspecies of M. pansa by Heidi Meudt, Jessica Prebble, Rebecca Stanley and Michael Thorsen in 2013. Plants of this species of forget-me-not are perennial rosettes with partially bracteate inflorescences and white corollas with exserted stamens.

<i>Myosotis arnoldii</i> Species of flowering plant

Myosotis arnoldii is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Lucy Moore described the species in 1961. Plants of this species of forget-me-not are perennial rosettes with ebracteate inflorescences, corollas ranging from yellow to dark purple, and stamens that are wholly exserted.

<i>Myosotis oreophila</i> Species of flowering plant

Myosotis oreophila is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Donald Petrie described the species in 1896. Plants of this species of forget-me-not are perennial rosettes with ebracteate inflorescences and white corollas with stamens that are partially exserted.

References

  1. ↑ Lange, Peter J. de; Rolfe, Jeremy R.; Barkla, John W.; Courtney, Shannel P.; Champion, Paul D.; Perrie, Leon R.; Beadel, Sarah M.; Ford, Kerry A.; Breitwieser, Ilse; Schönberger, Ines; Hindmarsh-Walls, Rowan (May 2018). "Conservation status of New Zealand indigenous vascular plants, 2017" (PDF). New Zealand Threat Classification Series. 22: 1–86. OCLC   1041649797.
  2. ↑ Moore, L.B. "Boraginaceae. In 'Flora of New Zealand'. (Ed. HH Allan) Vol. 1, pp. 806–833". (Government Printer: Wellington, New Zealand) floraseries.landcareresearch.co.nz. Retrieved 27 April 2022.
  3. ↑ "Myosotis matthewsii". New Zealand Plant Conservation Network. Retrieved 19 June 2022.
  4. ↑ Moore, L.B. "Boraginaceae. In 'Flora of New Zealand'. (Ed. HH Allan) Vol. 1, pp. 806–833". (Government Printer: Wellington, New Zealand) floraseries.landcareresearch.co.nz. Retrieved 27 April 2022.
  5. 1 2 3 4 5 6 7 Meudt, Heidi M.; Prebble, Jessica M. (28 February 2018). "Species limits and taxonomic revision of the bracteate-prostrate group of southern hemisphere forget-me-nots (Myosotis, Boraginaceae), including description of three new species endemic to New Zealand". Australian Systematic Botany. 31 (1): 48–105. doi:10.1071/SB17045. ISSN   1446-5701. S2CID   90834744.
  6. ↑ "Myosotis matthewsii". collections.tepapa.govt.nz. Retrieved 19 June 2022.
  7. ↑ Smith, Val (2009). "Eponymous Orchids. New Zealand Native Orchid Journal 111:14". www.nativeorchids.co.nz. Retrieved 19 June 2022.
  8. 1 2 Meudt, Heidi M.; Prebble, Jessica M.; Lehnebach, Carlos A. (1 May 2015). "Native New Zealand forget-me-nots (Myosotis, Boraginaceae) comprise a Pleistocene species radiation with very low genetic divergence". Plant Systematics and Evolution. 301 (5): 1455–1471. doi:10.1007/s00606-014-1166-x. ISSN   2199-6881. S2CID   254048318.
  9. 1 2 Winkworth, Richard C; Grau, Jürke; Robertson, Alastair W; Lockhart, Peter J (1 August 2002). "The origins and evolution of the genus Myosotis L. (Boraginaceae)". Molecular Phylogenetics and Evolution. 24 (2): 180–193. doi:10.1016/S1055-7903(02)00210-5. ISSN   1055-7903. PMID   12144755.
  10. ↑ Meudt, HM (1 October 2016). "Pollen morphology and its taxonomic utility in the Southern Hemisphere bracteate-prostrate forget-me-nots (Myosotis, Boraginaceae)". New Zealand Journal of Botany. 54 (4): 475–497. doi:10.1080/0028825X.2016.1229343. ISSN   0028-825X. S2CID   89118799.
  11. ↑ "Myosotis matthewsii". collections.tepapa.govt.nz. Retrieved 19 June 2022.
  12. ↑ "More forget-me-not hunting". Te Papa’s Blog. 15 May 2012. Retrieved 19 June 2022.
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