Myosotis albiflora

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Myosotis albiflora
Herbarium specimen of Myosotis albiflora NY 02361256.jpg
Herbarium specimen of Myosotis albiflora
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. albiflora
Binomial name
Myosotis albiflora

Myosotis albiflora is a species of flowering plant in the family Boraginaceae, native to southern Chile and Argentina. This species was described by Joseph Banks and Daniel Solander in Joseph Dalton Hooker's 19th century work Flora Antarctica . Plants of this species of forget-me-not are perennial and have white corollas. It is one of two native species of Myosotis in southern South America, the other being M. antarctica .

Contents

Taxonomy and etymology

Myosotis albiflora Banks & Sol. ex Hook.f. is in the family Boraginaceae and was described in 1846 by Joseph Banks and Daniel Solander in Joseph Dalton Hooker's publication, Flora Antarctica . [2] [1] It is morphologically most similar to the New Zealand endemic bracteate-prostrate creeping species, M. tenericaulis, but can be distinguished from that species by its larger nutlets, styles that are usually shorter than the calyx at flowering, and longer stamens. [3]

The type specimen of Myosotis albilfora was collected in Tierra del Fuego, Argentina, and is lodged at the Natural History Museum in London, England. [4] [3] [5]

The specific epithet, albiflora, is derived from Latin (albus, white; floris, flower) and refers to its white corollas. [3]

Phylogeny

Myosotis albiflora 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). [6] Within the southern hemisphere lineage, species relationships were not well resolved. [6]

Description

Myosotis albiflora plants are single rosettes. The rosette leaves are 1 to 17 per plant and have petioles 6 to 30 mm long. The rosette leaf blades are 7 to 39 mm long by 3 to 12 mm wide (length: width ratio 1.8–3.6: 1), elliptic, oblanceolate or narrowly obovate, widest at or above the middle, with an obtuse apex. The upper surface of the leaf is densely covered in straight, appressed, antrorse (forward-facing) hairs that are oriented at an angle relative to the mid vein. The upper surface of the leaf is sparsely covered in straight, appressed, antrorse hairs that are oriented parallel to the mid vein. Each rosette has 4 to 15 creeping, sprawling, ascending or prostrate, unbranched or branched bracteate inflorescences that are 7 to 23 cm long. The cauline leaves are similar in shape and hairs to the rosette leaves, but are smaller, and becoming smaller and sessile toward the tip of the inflorescence. There can be up to 15 flowers in each inflorescence, each one borne on a short pedicel and with a cauline leaf (but the flower is often below the axil). The calyx is 2–3 mm long at flowering and 2 to 4 mm long at fruiting, lobed to more than half of its length, and densely covered in short, straight to flexuous, antrorse, appressed hairs. The corolla is white and up to 5 mm in diameter, with a cylindrical tube, petals that are usually broadly elliptic, ovate, or very broadly ovate and flat, and small scales alternating with the petals. The anthers are fully included inside the corolla tube, or sometimes partly exserted, with the tips only just reaching the scales. The four smooth, shiny, light to medium brown nutlets are 1.8 to 2.1 mm long by 1.2 to 1.4 mm wide and narrowly to broadly ovoid in shape. [3]

M. albiflora has M. australis type pollen. [7] The pollen of the three individuals sampled was nevertheless morphologically variable and considered to form a transition (Übergang) between pollen types. [8]

The chromosome number of M. albiflora is unknown.

It flowers and fruits from December to March. [3]

Distribution and habitat

Myosotis albiflora is native to southern South America, including Chile (Aisén and Magallanes) and Argentina (Tierra del Fuego) from 0–50 m elevation. [3] [5] It is found in wet or moist sites in coastal areas on sand or rocks near beaches, streams, or waterfalls. [3]

Conservation status

Myosotis albiflora is not listed on the IUCN Red List. Few collections and little information about population sizes is available, and some herbarium specimen labels list it as being escasa (rare) or esparcidamente (sparse) where collected. [3]

Related Research Articles

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

Myosotis antarctica is a species of flowering plant in the family Boraginaceae, native to mainland New Zealand, Campbell Island and southern Chile. Joseph Dalton Hooker described the species in his 19th century work Flora Antarctica. Plants of this species of forget-me-not are perennial with a prostrate habit, bracteate inflorescences, and white or blue corollas. It is one of two native species of Myosotis in the New Zealand subantarctic islands, the other being M. capitata, which also has blue corollas.

<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 cheesemanii</i> Species of flowering plant

Myosotis cheesemanii is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Donald Petrie described the species in 1886. Plants of this species of forget-me-not are perennial rosettes with 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.

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 matthewsii</i> Species of flowering plant

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.

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

Myosotis pulvinaris 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</i> Species of flowering plant

Myosotis lyallii is a species of flowering plant in the family Boraginaceae, endemic to New Zealand. Joseph Dalton Hooker described the species in 1853. Plants of this species of forget-me-not are perennial with a prostrate habit, bracteate or partially-bracteate inflorescences, and white corollas.

<i>Myosotis lyallii <span style="font-style:normal;">subsp.</span> elderi</i>

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.

Myosotis lyalliisubsp. lyallii is a subspecies of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Joseph Dalton Hooker described M. lyallii in 1853. Plants of this subspecies of forget-me-not are perennial with a prostrate habit, bracteate or partially-bracteate inflorescences, and white corollas, usually with exserted anthers.

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

Myosotis rakiura is a species of flowering plant in the family Boraginaceae, endemic to southern South Island and Stewart Island/Rakiura of New Zealand. Joseph Beattie Armstrong described the species in 1881. Plants of this species of forget-me-not are perennial rosettes which form loose tufts or clumps, with ebracteate, erect inflorescences, and white corollas with exserted stamens.

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

Myosotis hikuwai is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Heidi Meudt, Jessica Prebble and Geoff Rogers described M. hikuwai in 2022. Plants of this forget-me-not are spring annuals with bracteate and erect inflorescences, and small, white corollas with inserted stamens. The species is considered Threatened and known only from one population near Wānaka.

<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.

Myosotis ultramafica is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Heidi Meudt, Jessica Prebble and Brian Rance described M. ultramafica in 2022. Plants of this forget-me-not are perennial with bracteate and prostrate to ascending inflorescences, and small, white corollas with partly exserted stamens. This species is Naturally Uncommon and only found on ultramafic substrates.

<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.

References

  1. 1 2 Hooker, Joseph Dalton; Fitch, W. H.; Brothers, Reeve (1846). The botany of the Antarctic voyage of H.M. discovery ships Erebus and Terror in the Years 1839-1843 :under the command of Captain Sir James Clark Ross. Vol. 1. London: Reeve Brothers. p. 329.
  2. ↑ "Myosotis albiflora". www.darwin.edu.ar. Retrieved 15 May 2022.
  3. 1 2 3 4 5 6 7 8 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.
  4. ↑ Porter, Duncan M. (1 July 1986). "Charles Darwin's vascular plant specimens from the voyage of HMS Beagle". Botanical Journal of the Linnean Society. 93 (1): 1–172. doi:10.1111/j.1095-8339.1986.tb01019.x. ISSN   0024-4074.
  5. 1 2 Moroni, Pablo; Meudt, Heidi (1 January 2022). "Myosotis L." Flora Argentina: Flora vascular de la República Argentina (in Spanish). 19 (3): 62–68.
  6. 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.
  7. ↑ 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.
  8. ↑ Grau, J; Schwab, A (1982). "Mikromerkmale der Blüte zur Gliederung der Gattung Myosotis". Mitteilungen der Botanischen Staatssammlung München. 18: 9–58.
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