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Species profile—Arytera dictyoneura

Classification

Plantae (plants) → Equisetopsida (land plants) → SapindaceaeArytera dictyoneura

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Species details

Kingdom
Plantae (plants)
Class
Equisetopsida (land plants)
Family
Sapindaceae
Scientific name
Arytera dictyoneura S.T.Reynolds
WildNet taxon ID
12867
Alternate name(s)
veined coogera
Nature Conservation Act 1992 (NCA) status
Near threatened
Back on Track (BoT) status
Low
Conservation significant
Yes
Confidential
No
Endemicity
Native
Pest status
Nil
Short Notes
BRI 371074 (Isotype), 371075 (Holotype)
Description
Arytera dictyoneura is a tree or shrub growing to 7 m high. The branchlets, leaf axes and peduncle are usually covered with dense, short and long pale to rusty brown hairs. The leaves are pinnate, consisting of a central axis 5 to 14 cm long, with two pairs of leaflets (rarely three) which are opposite, elliptic or subovate, rounded at the base, 3.5 to 11 cm long and 1.7 to 5.5 cm wide. The leaflets are glabrous, or the midrib may be puberulous. There is a finely prominent, reticulate network of nerves on the leaflets, with 8 to 14 pairs of lateral nerves on each side. The domatia is small and they are few or absent. The petiolule is tumid, 4 to 10 mm long and the petiole is 1.7 to 3 cm long, subterete and pulvinate. The inflorescence is an axillary, slender raceme, 4 to 9 cm long. The peduncles are shortly appressed pubescent. The flowers (male) are 2 mm in diameter and the pedicel is 1 mm long. The calyx lobes are broadly ovate, obtuse, 1.5 to 2 mm long and 1.5 mm wide, puberulous outside. The petals are ovate, shortly clawed, acuminate, 3.5 mm long and 2 to 2.5 mm long. The fruit is obcordate, with two distinct lobes, yellow-orange in colour, 0.8 to 1.5 cm long and 1.5 to 2.5 cm wide. The valves are thinly fleshed and glabrous. The fruit splits open at maturity releasing seeds about 1 cm long and covered by a thin, smooth, fleshy tissue (Reynolds, 1985; Halford, 1987).
Arytera dictyoneura is close to A. divaricata with respect to fruits and inflorescences, but differs in only having 2 pairs of leaflets with a delicate network of veins. Also domatia are small or absent and branchlets and leaf-axes with rusty-brown hairs (Reynolds, 1985).
Distribution
Arytera dictyoneura has been recorded from scattered locations in northern and southern Queensland. In northern Queensland A. dictyoneura occurs in Girringun National Park, on the Cardwell Range (near the summit of Dalrymple Gap), Cardwell Forest Reserve, near Meunga Creek, Clement State Forest (near Rollingstone) and Paluma Range. There is also one record of the species from Strathdickie, near Proserpine. In southern Queensland, there are numerous records of A. dictyoneura in Bulburin National Park, two records in Mount Colosseum National Park, one population near 'shirley' Miriam Vale and one population in Eurimbula National Park (Queensland Herbarium, 2011).
Distributional limits
-18.2901276, 145.876111
-24.6273071, 151.8927266
Range derivation
Range derived from extent of the taxon's verified records
Habitat
Arytera dictyoneura has been recorded from scattered locations in northern and southern Queensland. In northern Queensland the species has been found in semi-evergreen rainforest, on granite boulder slopes/ soil derived from granite. Associated species include Castanospermum, Myristica, Dysoxylum spp., Flindersia bourjotiana, Ilex, Drypetes, Buckinghamia and Alstonia scholaris; rainforest of Ficus variegata, Paraserianthes, Alstonia, Buckinghamia and Litsea fawcettiana and rainforest with a canopy of Argyrodendron polyandrum, Toona, Castanospermum, Alstonia, Paraserianthes and Canarium australianum. The species was rare in these areas. In southern Queensland the species occurs in closed forest (complex notophyll vine forest) on basalt derived soils. Associated vegetation includes Argyrodendron trifoliolatum and Archidendropsis thozetiana (Queensland Herbarium, 2011).
Reproduction
Very little is known about the life history of A. dictyoneura. Flowering and plants with mature fruit have been observed in southern Queensland in December and February (Halford, 1987; Queensland Herbarium, 2011).
Threatening processes
The northern Australia populations of this species, although rare, have not been reported as threatened by weeds, pigs or other disturbances. Some of the southern Australian populations are located in State Forest within and near logging areas. Weed invasion such as Lantana may also threaten this species. Other possible threatening processes include inappropriate fire regimes (Queensland Herbarium, 2010).
Status notes
Arytera dictyoneura is listed as Near Threatened under the Queensland Nature Conservation Act 1992.
Management documents
Halford, D. 1997 Arytera dictyoneura Species Management Profile, Department of Natural Resources, Queensland.
Management recommendations
Management objectives to protect Arytera dictyoneura and maintain its habitat include establishment of a protective buffer (0.3 ha) which excludes clearing, in areas where A. dictyoneura occurs; where practical control or eradicate lantana on sites where A. dictyoneura occurs; minimise the risk of fire entering areas of rainforest containing A. dictyoneura (Halford, 1997).
Notes
Occurs in the following Queensland pastoral districts: North Kennedy, Port Curtis.
References
Halford, D. (1997). Arytera dictyoneura Species Management Profile. Department of Natural Resources, Brisbane.
Queensland Herbarium (2011). Specimen label information. Queensland Herbarium. Accessed 15/08/2011.
Reynolds, S.T. (1985a). Notes on Sapindaceae, IV. Austrobaileya 2 (2): 164.
Reynolds, S.T. (1985b). Flora of Australia 25: 198.
Profile author
Ronald Booth (25/05/2012)

Other resources

The Australasian Virtual Herbarium (AVH)
Atlas of Living Australia

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0
https://apps.des.qld.gov.au/species/?op=getspeciesbyid&taxonid=12867

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Licence
Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
25 January 2022
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