Poa gunnii

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Poa gunnii
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Pooideae
Genus: Poa
Species:
P. gunnii
Binomial name
Poa gunnii
Vickery
P. gunnii specimen collected from Mt. Field at an altitude of 1200 m. Photo: Frank Bird Tasmanian Poa gunnii 2017.jpg
P. gunnii specimen collected from Mt. Field at an altitude of 1200 m. Photo: Frank Bird

Poa gunnii is a Tasmanian endemic tussock grass considered one of the most abundant and common in alpine and subalpine environments from about 800 m to above 1400 m. [1] [2] However it can be found to near sea level in the south of the island state where a cooler climate is prevalent. [1] [3] The genus Poa belongs to the family Poaceae. Tasmania has 16 native and 6 introduced species of Poa. [3]

Contents

Description

P. gunnii specimen collected from Mt. Field at an altitude of 1200 m. Photo: Frank Bird P.gunnii1.jpg
P. gunnii specimen collected from Mt. Field at an altitude of 1200 m. Photo: Frank Bird

Poa gunnii is a very variable species. [1] The most common subalpine and alpine form is stunted but grows up to 20 cm high while forms of P. gunnii at lower altitudes towards sea level are usually taller to 70 cm high and with longer leaves. [1] [4] Leaf sheaths, green or purplish; leaves less than 1mm in diameter, hard, usually round in cross-section. Blades up to 30 cm long, inrolled or folded. Ligules up to 2mm long, firm with tiny hairs on their margins and backs. Flowering spikelets are broadly ovate to lanceolate, 2–6 flowered, green or purplish, often viviparous. [2] [4] [1] P. constantina and P. fawcettiae can be identified from P. gunnii due to the features of the lemma and the prickliness of the leaves. [2]

Etymology

P. gunnii (GUNN-ee-i) after prominent Tasmanian plant collector Ronald Campbell Gunn (1808–1881) who collected the type specimen from "summit of Mt. Wellington (Kunanyi)" in 1841. [5]

Related Research Articles

<i>Nothofagus gunnii</i> Species of plant

Nothofagus gunnii, the tanglefoot- or deciduous beech, or Australian beech, is a deciduous shrub endemic to the highlands of Tasmania, Australia. It was discovered in 1847 by R.C Gunn and evidence exists that it once lived in Antarctica. N. gunnii is a small woody tree with a shrubby appearance known to grow up to 10 metres (33 ft). It lives only on mountains due to temperature limitations within the Tasmanian maritime climate and can survive up to heights of 1,600 metres (5,200 ft). It grows in alpine and sub-alpine regions in the central portions of the state but is absent from the coast zones. Though capable of reaching the size of a small tree, it rarely exceeds 10 metres (33 ft) in height, instead growing as a thick shrub or as a woody ground cover hence its common name of "tanglefoot".

<i>Eucalyptus gunnii</i> Species of flowering plant in the family Myrtaceae

Eucalyptus gunnii, commonly known as cider gum, is a species of small to medium-sized tree endemic to Tasmania. It has mostly smooth bark, lance-shaped to egg-shaped adult leaves, flower buds in groups of three, white flowers and cylindrical to barrel-shaped fruit.

Archeria comberi, also known as the pink mountain heath or comb heath, is a small, rare shrub endemic to Tasmania, Australia. As a member of the heath family, Ericaceae, this species is generally classified as a subalpine/ alpine species and shares many characteristics with other members of the family. It is an evergreen shrub 0.15m-1m in height, with pink flowers during the summer months, hence its common name pink mountain heath. Archeria comberi is often found growing among other species such as Nothofagus gunnii and Persoonia gunnii.

<i>Persoonia gunnii</i> Species of flowering plant

Persoonia gunnii is a species of flowering plant in the family Proteaceae and is endemic to Tasmania. It is an erect shrub with young branchlets that are hairy at first, spatula-shaped to egg-shaped leaves with the narrower end towards the base, and white to cream-coloured flowers.

<i>Persoonia muelleri</i> Species of shrub

Persoonia muelleri, commonly known as Mueller’s geebung, is a shrub endemic to Tasmania. It forms a shrub in open areas of wet forests in the west and northeast of the state. It is occasionally confused with P. gunnii though it has larger flowers and longer, straighter leaves.

Persoonia moscalii, commonly known as the creeping geebung, is a shrub native to southwestern Tasmania.

<i>Orites revolutus</i> Species of plant in the family Proteaceae endemic to Tasmania

Orites revolutus , also known as narrow-leaf orites, is a Tasmanian endemic plant species in the family Proteaceae. Scottish botanist Robert Brown formally described the species in Transactions of the Linnean Society of London in 1810 from a specimen collected at Lake St Clair. Abundant in alpine and subalpine heath, it is a small to medium shrub 0.5 to 1.5 m tall, with relatively small, blunt leaves with strongly revolute margins. The white flowers grow on terminal spikes during summer. Being proteaceaous, O. revolutus is likely to provide a substantial food source for nectivorous animal species within its range.

<i>Leptospermum rupestre</i> Species of shrub

Leptospermum rupestre, commonly known as alpine tea-tree or prostrate tea-tree, is a flowering shrub in the myrtle family, Myrtaceae. It is endemic to Tasmania. In alpine areas it assumes a prostrate habit while in subalpine areas it appears as a large shrub.

<i>Monotoca scoparia</i> Species of tree

Monotoca scoparia, commonly known as prickly broom heath, is a widespread native species across south-eastern Australia. Monotoca scoparia was formerly in the family Epacridaceae but now belongs to the family Ericaceae. Monotoca is an endemic Australian genus with 17 described species occurring in all states.

Alpine vegetation refers to the zone of vegetation between the altitudinal limit for tree growth and the nival zone. Alpine zones in Tasmania can be difficult to classify owing to Tasmania's maritime climate limiting snow lie to short periods and the presence of a tree line that is not clearly defined.

<i>Campynema</i> Genus of flowering plants

Campynema is a genus in the family Campynemataceae first described in 1805. It contains only one known species (monotypic), Campynema lineare, endemic to the island of Tasmania in Australia. Its closest relative is Campynemanthe, endemic to New Caledonia, sole other genus of the family.

<i>Richea gunnii</i> Species of flowering plant

Richea gunnii, the bog candleheath or Gunns richea, is an endemic Tasmanian angiosperm. It is a dicot of the family Ericaceae and is found in Central, Western and North-east Tasmania.

<i>Astelia alpina</i> Species of flowering plant

Astelia alpina called pineapple grass, silver astelia, or perching lily is a commonly found species in alpine and subalpine areas of Tasmania and the Australian Alps. It is a perennial herb that typically dominates its environment by growing in dense clusters, called mats, in alpine bogs. There are two subspecies: Astelia alpina var. novae hollandiae from New South Wales and Victoria and Astelia alpina var. alpina endemic to Tasmania. Both subspecies appear very similar to each other. The species was originally described by Robert Brown.

<i>Trochocarpa thymifolia</i> Species of shrub

Trochocarpa thymifolia is a common montane and subalpine shrub from the plant family Ericaceae. Originally described by botanist Robert Brown in 1810, it is a widespread Tasmanian endemic that inhabits mountain regions. It is named after its characteristic thyme-like leaves, and due to its delicate pendulus flower-spikes is known colloquially as 'Delicate Trochocarpa'.

<i>Orites diversifolia</i> Species of flowering plant

Orites diversifolia (=diversifolius), commonly known as variable orites, is a member of the family Proteaceae and is endemic to Tasmania. The common name stems from the variable form of the leaves, which range from entire and linear to serrated and ovate. It is a common shrub in lowland rainforest, subalpine woodland and scrub.

<i>Orites acicularis</i> Species of plant in the family Proteaceae endemic to Tasmania, Australia

Orites acicularis, commonly known as yellow bush, is an angiosperm endemic to Tasmania, Australia and is a member of the genus Orites within the family Proteaceae. The species was first described in 1810 by Scottish botanist Robert Brown in Transactions of the Linnean Society of London.

<i>Chiloglottis gunnii</i> Species of orchid

Chiloglottis gunnii, commonly known as the tall bird orchid, is a species of orchid endemic to Tasmania. It has two broad leaves and a single green to purplish brown flower with a line of erect calli with swollen heads along the mid-line of the labellum. It is widespread but mainly in coastal districts and most commonly in moist to wet forest.

<i>Boronia gunnii</i> Species of flowering plant

Boronia gunnii, commonly known as Gunn's boronia or Cataract Gorge boronia is a plant in the citrus family Rutaceae and is endemic to Tasmania. It is an erect shrub with compound leaves and pink or white, four-petalled flowers.

<i>Trochocarpa cunninghamii</i> Species of flowering plant

Trochocarpa cunninghamii is a flowering plant species of the family Ericaceae. It is commonly referred to as straggling purpleberry due to its round flattened mauve drupe fruits. This woody shrub is usually found in the understorey of rainforests and subalpine forests in the Central Plateau and western Tasmania, and is endemic to Tasmania.

<i>Chionogentias diemensis</i> Species of flowering plant

Chionogentias diemensis is a flowering herbaceous alpine plant in the family Gentianaceae, endemic to the island of Tasmania in Australia. It is commonly known as the Tasmanian mountain gentianChionogentias diemensis has been classified into two sub-species: the Tasmanian snow-gentian and the Ben Lomond snow-gentian.

References

  1. 1 2 3 4 5 Curtis, Winifred (1994). The student's flora of Tasmania part 4b (1 ed.). Hobart: St David's Park. pp. 218–219. ISBN   0-7246-2313-2.
  2. 1 2 3 Kirkpatrick, Jamie (1997). Alpine Tasmania, An Illustrated Guide to the Flora and Vegetation. Australia: Oxford University Press Australia. p. 133. ISBN   0-19-553753X.
  3. 1 2 Jordan, Greg. "Key to Tasmanian Vascular Plants". Key to Tasmanian Vascular Plants. University of Tasmania. Retrieved 2017-03-27.
  4. 1 2 Wilson, A (2005). Flora of Australia Volume 44a Poacea 2. Australia: Australian Biological Resources Study, Canberra. p. 327. ISBN   0-643-06961-5.
  5. Wapstra, Mark, Annie, Hans (2010). Tasmanian Plant Names Unravelled. Launceston, Tasmania: Fullers Book Shop. p. 411. ISBN   978-0-9804720-2-8.