Elaeocarpus thelmae

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Mountain quandong
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Oxalidales
Family: Elaeocarpaceae
Genus: Elaeocarpus
Species:
E. thelmae
Binomial name
Elaeocarpus thelmae

Elaeocarpus thelmae is a species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a tree, often with buttress roots at the base of the trunk, egg-shaped to elliptic leaves with many hairy domatia, densely rusty-hairy flowers, and blackish, oval fruit.

Contents

Description

Elaeocarpus thelmae is a tree that typically grows to a height of 35 m (115 ft), a dbh of 90 cm (35 in) and often with buttress roots at the base of the trunk. The leaves are elliptic to egg-shaped with the narrower end towards the base, 70–110 mm (2.8–4.3 in) long and 30–50 mm (1.2–2.0 in) wide on a slender petiole 15–25 mm (0.59–0.98 in) long. The leaves have many hairy domatia near vein junctions and have obscure serration on the edges. The flowers are borne in groups of between five and ten on a rachis 25–40 mm (0.98–1.57 in) long, each flower on a robust pedicel 5–7 mm (0.20–0.28 in) long. The flowers have four or five egg-shaped sepals 6–7 mm (0.24–0.28 in) long, 2–3 mm (0.079–0.118 in) wide and densely hairy on the back. The four or five petals are about the same size as the sepals with four to six lobes on the tip, and there are fifty to sixty densely-packed stamens. Flowering occurs in January and the fruit is an blackish, oval drupe 19–23 mm (0.75–0.91 in) long and 12–13 mm (0.47–0.51 in) wide, present from July to October. [2] [3]

Taxonomy

Elaeocarpus thelmae was first formally described in 1984 by Bernard Hyland and Mark James Elgar Coode in the Kew Bulletin . [2] [4]

Distribution and habitat

Elaeocarpus thelmae grows in rainforest in a restricted area on the Windsor Tablelands and nearby areas of north-east Queensland, at altitudes of 400–1,200 m (1,300–3,900 ft). [3]

Conservation status

This quandong is listed as of "least concern" under the Queensland Government Nature Conservation Act 1992 . [5]

Related Research Articles

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<i>Elaeocarpus williamsianus</i> Species of flowering plant in the family Elaeocarpaceae

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Elaeocarpus carolinae is a species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a tree with buttress roots at the base of the trunk, elliptic to oblong leaves with wavy-toothed edges, flowers with five white petals with lobed tips and spherical blue to purple fruit.

Elaeocarpus elliffii, commonly known as mountain quandong, is a species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a tree, sometimes with buttress roots at the base of the trunk, narrow egg-shaped leaves often with large domatia, flowers with five white petals with lobed tips, and more or less spherical fruit.

Elaeocarpus ferruginiflorus is a species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a small to medium-sized tree, sometimes with buttress roots at the base of the trunk, elliptic to egg-shaped leaves, flowers with five white petals, and dark bluish-grey fruit.

Elaeocarpus foveolatus, commonly known as white quandong or northern quandong, is a species of flowering plant in the family Elaeocarpaceae and is endemic to Queensland. It is a medium-sized tree, sometimes with buttress roots at the base of the trunk, variably-shaped leaves with serrated edges, flowers with five petals often with a few short lobes or teeth on the tip, and elliptic to oval fruit.

Elaeocarpus grahamii is a species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a small to medium-sized tree, sometimes coppicing, with elliptic to egg-shaped leaves, flowers with five petals that have a frilled tip, and oval blue fruit.

Elaeocarpus hylobroma is species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a small tree with elliptic to egg-shaped leaves with a few serrations near the tip, racemes of white flowers and dull blue, oval fruit.

Elaeocarpus johnsonii, commonly known as Kuranda quandong or Johnson's quandong, is species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a small to medium-sized tree, often with several main stems, elliptic to egg-shaped leaves with the narrower end towards the base, racemes of up to seven flowers, the petals with fringed lobes, and dark blue fruit.

Elaeocarpus largiflorens, commonly known as tropical quandong, is a species of flowering plant in the family Elaeocarpaceae and is endemic to Queensland. It is a medium-sized to large tree, sometimes with buttress roots at the base of the trunk, mostly elliptic leaves and reddish-brown flowers.

Elaeocarpus linsmithii is a species of flowering plant in the family Elaeocarpaceae and is endemic to north-east Queensland. It is a shrub with oblong to elliptic leaves, white or pale green flowers and oval fruit.

Elaeocarpus ruminatus, commonly known as brown quandong, caloon or grey quandong, is a species of flowering plant in the family Elaeocarpaceae and is endemic to Queensland. It is a tree with buttress roots at the base of the trunk, mostly more or less elliptic leaves, cream-coloured flowers with five petals that sometimes have a divided tip, and more or less spherical fruit.

Elaeocarpus sericopetalus, commonly known as hard quandong, blueberry ash, hard duandong or northern quandong, is a species of flowering plant in the family Elaeocarpaceae and is endemic to Queensland. It is a tree, sometimes with buttress roots at the base of the trunk, relatively large lenticels, oblong to elliptic leaves, creamy-white flowers with five petals, and deep red to almost black fruit.

Elaeocarpus stellaris is a species of flowering plant in the family Elaeocarpaceae and is endemic to north-eastern Queensland. It is a tree, sometimes with buttress roots at the base of the trunk, elliptic to egg-shaped leaves, small groups of flowers with greenish-yellow sepals and creamy-white petals, the fruit conatining a five-flanged stone.

References

  1. "Elaeocarpus thelmae". Australian Plant Census. Retrieved 27 February 2021.
  2. 1 2 Hyland, Bernard; Coode, Mark J. (1984). "Elaeocarpus in Australia and New Zealand". Kew Bulletin. 39 (3): 573–575.
  3. 1 2 F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Elaeocarpus thelmae". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government . Retrieved 2 July 2021.
  4. "Elaeocarpus thelmae". APNI. Retrieved 27 February 2021.
  5. "Species profile —Elaeocarpus thelmae". Queensland Government Department of Environment and Science. Retrieved 27 February 2021.