Biology:Pomaderris oraria
| Pomaderris oraria | |
|---|---|
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| At Wilsons Promontory | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Rosales |
| Family: | Rhamnaceae |
| Genus: | Pomaderris |
| Species: | P. oraria
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| Binomial name | |
| Pomaderris oraria F.Muell. ex Reissek[1]
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Pomaderris oraria, commonly known as Bassian dogwood,[2] is a species of flowering plant in the family Rhamnaceae and is endemic to south-eastern Australia. It is a compact shrub with hairy branchlets, hairy, elliptic leaves and panicles of hairy, greenish to cream-coloured or crimson-tinged flowers.
Description
Pomaderris oraria is a compact shrub that typically grows to a height of up to 2 m (6 ft 7 in), and has many branchlets with soft greyish to rust-coloured, star-shaped hairs. The leaves are elliptic to egg-shaped, the size depending on subspecies, with densely hairy stipules about 2 mm (0.079 in) long at the base, but that fall off as the leaf develops. The upper surface of the leaves is covered with bristly or felt-like hairs, the lower surface densely covered with woolly white, star-shaped hairs. The flowers are borne on the ends of branchlets or in leaf axils in panicles about as long as the leaves, each flower on a pedicel 0.5–1.0 mm (0.020–0.039 in) long. The flowers are greenish to cream-coloured or tinged with crimson and densely covered with soft, star-shaped hairs. The size of the petal-like sepals varies with subspecies and there are no petals. Flowering occurs in October and November and the fruit is a dry capsule about 3 mm (0.12 in) long.[3][4]
Taxonomy
Pomaderris oraria was first formally described in 1858 by Siegfried Reissek in the journal Linnaea: Ein Journal für die Botanik in ihrem ganzen Umfange from an unpublished description by Ferdinand von Mueller. The type specimens were collected by Charles Stuart in Tasmania.[3][5] The specific epithet (oraria) means "pertaining to the coast".[6]
In 1990, Neville Grant Walsh described two subspecies of P. oraria in the journal Muelleria, and the names are accepted by the Australian Plant Census:
- Pomaderris oraria subsp. calcicola N.G.Walsh[7] that has leaves up to 70 mm (2.8 in) long and sepals 2.0–2.5 mm (0.079–0.098 in) long and 1.2–1.5 mm (0.047–0.059 in) wide;[3][8]
- Pomaderris oraria F.Muell. ex Reissek subsp. oraria[9] that has leaves mostly 10–30 mm (0.39–1.18 in) long and sepals 1.5–2.2 mm (0.059–0.087 in) long and 1.0–1.3 mm (0.039–0.051 in) wide.[2][3][10]
Distribution and habitat
Subspecies oraria grows in near-coastal scrub in deep sand between Cape Paterson and Ninety Mile Beach in eastern Victoria and Badger Head and near Wingaroo on Flinders Island in Tasmania.[2][10] Subspecies calcicola grows on limestone soils where it is often dominant in shrubland in a few locations in eastern Victoria including the Mitchell River National Park.[8]
Conservation status
Subspecies oraria is listed as "rare" under the Tasmanian Government Threatened Species Protection Act 1995.[2]
References
- ↑ "Pomaderris oraria". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/118003. Retrieved 24 March 2022.
- ↑ 2.0 2.1 2.2 2.3 "Threatened species link - Pomaderris oraria subsp. oraria". Government of Tasmania Department of Natural Resources and Environment. https://www.naturalvaluesatlas.tas.gov.au/downloadattachment?id=16447.
- ↑ 3.0 3.1 3.2 3.3 Walsh, Neville G. (1990). "The Pomaderris oraria F.Muell. complex in Australia.". Muelleria 7 (2): 269–273. https://www.biodiversitylibrary.org/item/203206#page/133/mode/1up. Retrieved 25 March 2022.
- ↑ Walsh, Neville G.. "Pomaderris oraria". Royal Botanic Gardens Victoria. https://vicflora.rbg.vic.gov.au/flora/taxon/443b7153-d3f9-4f9a-a3a9-e50b7b738a6c.
- ↑ "Pomaderris oraria". Australian Plant Name Index. https://biodiversity.org.au/nsl/services/rest/instance/apni/552248. Retrieved 25 March 2022.
- ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 266. ISBN 9780958034180.
- ↑ "Pomaderris oraria subsp. calcicola". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/140156. Retrieved 25 March 2022.
- ↑ 8.0 8.1 Walsh, Neville G.. "Pomaderris oraria subsp. calcicola". Royal Botanic Gardens Victoria. https://vicflora.rbg.vic.gov.au/flora/taxon/bb459577-a091-4c80-b7ee-d285fde60017.
- ↑ "Pomaderris oraria subsp. oraria". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/117267. Retrieved 25 March 2022.
- ↑ 10.0 10.1 Walsh, Neville G.. "Pomaderris oraria subsp. oraria". Royal Botanic Gardens Victoria. https://vicflora.rbg.vic.gov.au/flora/taxon/663dd1a6-e207-43de-aa46-8d5e434986f2.
Wikidata ☰ Q7227198 entry
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