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Species profile—Shonia carinata


Plantae (plants) → Equisetopsida (land plants) → EuphorbiaceaeShonia carinata

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Species details

Plantae (plants)
Equisetopsida (land plants)
Scientific name
Shonia carinata Halford & R.J.F.Hend.
WildNet taxon ID
Nature Conservation Act 1992 (NCA) status
Conservation significant
Pest status
Short Notes
Status designated by author (Halford)
Shonia carinata is an erect to spreading multi-stemmed shrub to 2 m high, it is viscid on most parts. The bark is rough and scaly and is dark grey in colour. The branchlets are somewhat angular, becoming terete with age, and are glabrous. The leaves have petioles 0.5 to 1.2 mm long that are terete, glabrous and smooth. The lamina are linear, 12 to 40 mm long by 0.8 to 1.4 mm wide, with a length/width ratio of 20 to 40 to 1, they are cuneate at the base and obtuse to rounded or acute at the apex, and with the margins recurved to the midrib. The upper surface is yellow-green with the midvein obscure, the undersurface is white, with stellate (star shaped), hairs. The inflorescence is a raceme, (flowers arranged singly on an unbranched stem). Flowers with calyx 5 (rarely 4). Male flowers with pedicels from 6 to 9 mm long, terete, glabrous, calyx lobes oblong, 0.5 to 1.1 mm long by 0.5 to 0.8 mm wide, obtuse to rounded at the apex. The petals are broadly obovate, 1.4 to 1.6 mm long by 0.6 to 1.2 mm wide, rounded at the apex. Stamens about 10, filaments 0.7 to 0.8 mm long, glabrous, anthers 0.3 to 0.4 mm long. The female flowers with pedicels 12 to 17 mm long, glabrous, calyx lobes oblong, about 1.2 m long by 0.4 to 0.5 mm wide, obtuse to rounded at the apex. The petals are suborbicular, about 1.2 mm long and 1.2 mm wide, rounded at the apex. The fruits are broadly ellipsoid, 5 to 5.2 mm long by 5.2 by 5.4 mm across. The seeds are about 5 mm long and about 2.5 mm wide and 2 mm across (Halford and Henderson, 2005).
Shonia carinata is similar to S. bickertonensis in having linear leaves but can be distinguished from that and all other Shonia species by its abaxially prominently keeled calyx lobes (Halford and Henderson, 2005).
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Shonia carinata is confined to central Queensland in an area more or less bounded by Tambo, Springsure and Mitchell. The species occurs within Carnarvon National Park, Castlevale Nature Refuge and Chesterton Range National Park (Queensland Herbarium, 2012).
Distributional limits
-24.5567757, 146.739474
-26.2401059, 147.9069591
Range derivation
Range derived from extent of the taxon's verified records
Shonia carinata is recorded as growing in shallow sandy soils associated with rocky sandstone slopes and cliff lines in woodland dominated by Eucalyptus cloeziana and/or E. decorticans, with a shrubby understory (Queensland Herbarium, 2012).
Flowers have been collected from August to November, fruits in August and September (Queensland Herbarium, 2012).
Threatening processes
No substantiated threatening processes recorded in the literature.
Status notes
Shonia carinata is listed as Vulnerable under the Queensland Nature Conservation Act 1992
Halford, D.A. and Henderson, R.J.F. (2005). Studies in Euphorbiaceae, 7. Shonia R.J.F.Hend. and Halford (Ricinocarpeae, Ricinocarpinae), a new Australian endemic genus. Austrobaileya 7 (1): 226-227.
Queensland Herbarium (2012). Specimen label information. Queensland Herbarium. Accessed 20/03/2012.
Profile author
Ronald Booth (05/06/2012)

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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.

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

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Last updated
20 May 2024