Archeria traversii

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Archeria traversii
Archeria traversii - South Island NZ.jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Ericaceae
Genus: Archeria
Species:
A. traversii
Binomial name
Archeria traversii

Archeria traversii is a species of shrub in the family Ericaceae.

Contents

Distribution

Archeria traversii is scattered locally across southern New Zealand (the South Island and Stewart Island), where it is endemic. [2] It is notably absent from Marlborough and much of the eastern South Island. [3]

Ecology

It is largely found in shrublands and conifer-broadleaf forests, at lowland to montane altitudes. Flowering takes place from December to February, and fruiting from February to April. [4]

Morphology

Habit
An erect shrub, up to 5 m tall but often much shorter. It has spreading to ascending branches, with leaves that are fairly evenly spaced (rather than clustered, like A. racemosa). Multiple trunks are often formed, and can be highly twisted, rough, and covered in epiphytic bryophytes. The bark is dark brown in colour, with branchlets that are light reddish when young and light brown when mature.
Leaves
Narrow lanceolate leaves, becoming glabrous and leathery. Dark green on the adaxial side, while abaxially they tend to be much paler. The leaf apices are acute to subacute, and sometimes reddish in colour. The base of the leaf is rigid and nearly sessile, attached to the stem with a short and flat petiole. Dimensions are roughly 7–12 mm long and 2–4 mm wide. Leaf margins are entire, minutely ciliolate, and flat to slightly recurved. Prominent venation can often be seen on the abaxial sides of the leaves (3- to 5-veined).
Inflorescence
A solitary terminal raceme, with 8–16 flowers, ranging from 10 to 30 mm in length. The axis and short curved pedicels are both pubescent. The bracts are oblong and caducous.
Flowers & fruits
The flowers are perfect, 4–5 mm long, urn shaped, with a corolla that is white to pink to deep red in colour (often lighter at the base and darkening towards the lobes). The sepals are oblong and ciliolate, frequently light green but turning to red towards the tips. Capsules are 2–3 mm in diameter, with 3–5 locules. [2] [3] [4] [5]

Evolutionary history

The phylogeny of the genus remains unknown, but morphologically A. traversii appears to most closely resemble A. racemosa , the only other New Zealand species in the genus.

Conservation status

Archeria traversii is currently regarded as non-threatened. [6]

Etymology

Archeria was named by Joseph Dalton Hooker in 1844 after the nineteenth-century Tasmanian botanist W. Archer. The specific epithet traversii comes from William Travers, a 19th-century New Zealand naturalist and politician, after whom the plant species was named. [3]

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

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

Myosotis traversiisubsp. traversii is a subspecies of flowering plant in the family Boraginaceae, endemic to the northern South Island of New Zealand. Joseph Dalton Hooker described the species M. traversii in 1864. 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.

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

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 × cinerascens is a hybrid species of flowering plant in the family Boraginaceae, endemic to the South Island of New Zealand. Donald Petrie described M. cinerascens in 1891, and it was later deemed to be a hybrid in 2021. Plants of this forget-me-not are perennial rosettes which form tufts or clumps, with ebracteate, erect inflorescences, and white corollas with partly exserted stamens.

References

  1. "Archeria traversii Hook.f. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2020-01-18.
  2. 1 2 Allan, H.H. 1961. Flora of New Zealand. Volume I: Indigenous Tracheophyta - Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledons. Government Printer, Wellington.
  3. 1 2 3 Eagle, Audrey (2008). Eagle's complete trees and shrubs of New Zealand volume two. Wellington: Te Papa Press. p. 556. ISBN   9780909010089.
  4. 1 2 Smith-Dodsworth, J.C. 1991. New Zealand Native Shrubs and Climbers. David Bateman Ltd, Auckland.
  5. Dawson, J., Lucas, R. 2011. New Zealand's Native Trees. Craig Potton Publishing, Nelson.
  6. De Lange, P., Heenan, P., Norton, D., Rolfe, J., Sawyer, J. 2010. Threatened Plants of New Zealand. Canterbury University Press, Christchurch.