Myosotis venticola | |
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Habit of Myosotis venticola | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Boraginales |
Family: | Boraginaceae |
Genus: | Myosotis |
Species: | M. venticola |
Binomial name | |
Myosotis venticola Meudt & Prebble, 2022 [1] | |
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 venticola Meudt & Prebble is in the plant family Boraginaceae. [1] The species was described by Heidi Meudt and Jessica Prebble in 2022. [1] The holotype was collected by A.P. Druce near Dunstan and is lodged at the Allan Herbarium of Manaaki Whenua - Landcare Research (CHR 624106). [1] [2]
The specific epithet, venticola, means ‘‘inhabiting windy areas’ and refers to the high-elevation windswept habitats of this species. [1] [3] It comes from the Latin words ventus (‘wind’) and cola (‘dweller’). [1] [4]
Myosotis venticola has been previously confused with M. cheesemanii. [1] [5] However, morphological comparison of herbarium specimens showed that M. venticola is morphologically most similar to M. lyallii and M. retrorsa. [1] Myosotis venticola has retrorse (backward-facing) hairs mixed with antrorse (forward-facing) hairs on the upper side of the leaves (which is a unique character that can distinguish it from all other southern hemisphere species of Myosotis except M. oreophila ) as well as on the lower surface (which can distinguish it from all other species except M. retrorsa and M. umbrosa). [1]
Additionally, the hairs are appressed on the upper surface and margins of the rosette leaves, and together with its unbranched inflorescences, these characters further distinguish Myosotis venticola from M. retrorsa and M. lyallii. Finally, other characters that can help distinguish M. venticola from M. cheesemanii include partially bracteate inflorescences, retrorse hairs on the calyces, and flexuous hairs on the rosette leaves. [1]
Myosotisventicola was not included in phylogenetic analyses of standard DNA sequencing markers (nuclear ribosomal DNA and chloroplast DNA regions). [6] [7] Within the southern hemisphere lineage, species relationships were not well resolved. [6] [7]
Myosotis venticola plants are single rosettes that often cluster together to form clumps or mats. The rosette leaves have petioles 2–8 mm long. The rosette leaf blades are 3–12 mm long by 2–7 mm wide (length: width ratio 1.1–2.1: 1), usually narrowly obovate or obovate, and usually widest above the middle (rarely below the middle), with an obtuse apex. The upper surface of the leaf is densely covered in mostly flexuous (some straight), appressed or patent antrorse (forward-facing) hairs that are mixed with some retrorse (backward-facing) hairs, and oriented mostly parallel (some oblique) to the mid vein. The hairs on the edges of the leaf are similar but are antrorse only and sometimes erect on the petiole. The hairs on the undersurface of the leaf are similar but mostly retrorse, with some antrorse hairs near the apex. Each rosette has 3–16 prostrate to ascending, unbranched bracteate inflorescences that are up to 47 mm long. The cauline leaves are up to 8 per inflorescence and are similar to the rosette leaves but smaller and decrease in size and become sessile toward the tip. Each inflorescence has up to 6 flowers, each borne on a pedicel up to 3 mm long at fruiting, and the lowest 1–4 flowers with a bract. The calyx is 5–6 mm long at flowering and 5–8 mm long at fruiting, lobed about one-third its length, and densely covered in antrorse and retrorse hairs that are mostly flexuous, and appressed to patent. The corolla is white, up to 8 mm in diameter, with a cylindrical tube, petals that are broadly obovate or very broadly ovate, and small yellow scales alternating with the petals. The stamens are 5–7 mm long (measured from the base of the calyx to the anther tips). The anthers are partly exserted, with the tips only just surpassing the scales. The four smooth, shiny, medium to dark brown nutlets are 1.5–2.1 mm long by 0.9–1.3 mm wide and ovoid in shape. [1]
The chromosome number of M. venticola is unknown.
The pollen of M. venticola is unknown.
It flowers in January and fruits from January–February. [1]
Myosotis venticola is a forget-me-not endemic to specific high-elevation areas of Otago and southern Canterbury, South Island, New Zealand, from 1350–1675 m ASL. [1] There are herbarium specimens of M. venticola from the Dunstan Mountains, Saint Marys Range (Awakino Ski Field) and Saint Bathans Range; photos of an plant on Mt Kyeburn originally identified as M. cheesemanii are also likely to be this species, but there are no herbarium specimens of this species from there. [1] It is found on exposed rocky or gravelly ground in high-elevation sites with sparsely vegetated cushion herbfields, tussocks or fell field. [1]
Myosotis venticola was not listed in the most recent assessment (2017-2018) under the New Zealand Threatened Classification system for plants. [1] [8]
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Myosotis concinna is a species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Thomas Cheeseman described the species in 1885. Plants of this species of forget-me-not are large, perennial rosettes which form loose tufts or clumps, with ebracteate, erect inflorescences, and yellow corollas.
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.
Myosotis traversiisubsp. cantabrica is a subspecies of flowering plant in the family Boraginaceae, endemic to the central South Island of New Zealand. Lucy Moore described M. traversii var. cantabrica in 1961 and Heidi Meudt changed its rank to subspecies in 2021. Plants of this subspecies of forget-me-not are perennial rosettes which form tufts or clumps, with ebracteate, erect inflorescences, and white or yellow corollas with partly exserted stamens.
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.
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.
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.