Английская Википедия:Argophyllum heterodontum
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Argophyllum heterodontum is a plant in the Argophyllaceae family endemic to a small part of north eastern Queensland. It has an affinity to A. lejourdanii and was described and named in 2018.
Description
Argophyllum heterodontum is a straggly shrub growing to Шаблон:Cvt tall. New growth is covered in rusty brown hairs, which become creamy white when more than Шаблон:Cvt from the tip. The leaves are held on petioles up to Шаблон:Cvt long, are simple, alternate and highly discolorous - the upper sides are green and the lower sides are silvery white. They are elliptic to ovate with toothed margins and 6–10 lateral veins either side of the midrib, and they measure up to Шаблон:Cvt long by Шаблон:Cvt wide.Шаблон:R
The inflorescences are panicles produced in the leaf axils - they are covered with dense, matted, woolly hairs, and may reach up to Шаблон:Cvt long. The small flowers are actinomorphic (i.e. with multiple lines of symmetry) and have both pistils and stamens. They have 5 fused greenish sepals with lobes about Шаблон:Cvt long, and 5 white petals about Шаблон:Cvt long. The 5 stamens are about Шаблон:Cvt long, as is the style.Шаблон:R
The fruit is a capsule about Шаблон:Cvt long and Шаблон:Cvt diameter.Шаблон:R
Taxonomy
This species was first described, along with a number of other new species in the genus, in 2018 by the Australian botanists Anthony Bean and Paul Forster. Their paper, titled "A taxonomic revision of Argophyllum J.R.Forst. & G.Forst. (Argophyllaceae) in Australia", was published in the Journal Austrobaileya. The type specimen was collected by Forster in 2003 at Walshs Pyramid, about Шаблон:Cvt south of Cairns.Шаблон:R
Etymology
The genus name Argophyllum is derived from Ancient Greek Árgos meaning white or shining, and phúllon meaning leaf. It refers to the white colouration of the underside of the leaves.Шаблон:R The species epithet heterodontum is from héteros meaning different, and odóntos meaning tooth. It refers to the variable size of the teeth on the leaf margin.Шаблон:R
Distribution and habitat
A. heterodontum is restricted to a very small area of the Wet Tropics of Queensland, mostly in the area of Walsh's Pyramid, and with a disjunct population around Butchers Creek Falls to the south-west.Шаблон:R It inhabits gallery forest and rock outcrops on the margins of rainforest. The Walsh's Pyramid population is on very thin soil derived from granite, while at Butchers Creek they grow on basaltic and metamorphic soils.Шаблон:RШаблон:Rp The total area of occupancy of this species is just Шаблон:Cvt.Шаблон:RШаблон:Efn
Conservation
Whilst this species is listed by the Queensland Department of Environment and Science as least concern,Шаблон:R Bean and Forster recommended in their paper that it should be given the rating of vulnerable, arguing that it may be affected by burning and weed invasion (while most of the population occurs in National Parks, some occurs on freehold land). At the same time, they also accepted that there is no immediate threat to the species.Шаблон:RШаблон:Rp
Шаблон:As of, Argophyllum heterodontum has not been assessed by the International Union for Conservation of Nature.
References
External links
- Шаблон:Wikispecies-inline
- Шаблон:Commons category-inline
- View a map of recorded sightings of this species at the Australasian Virtual Herbarium
- See images of this species on Flickriver
Notes
