Sauropus trachyspermus (F.Muell.) Airy Shaw

Slender Spurge

Kew Bull. 35: 685 (1981) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: endangered (e)

Monoecious, annual herb to 40 cm high, with a fibrous root system; branchlets ribbed. Leaves linear or lanceolate to obovate, 2–45 mm long, 0.2–4.5 mm wide, acute, mucronate, flat or rarely conduplicate, glabrous or scabrous, base oblique, margins thickened; petioles to 1.5 mm long; stipules triangular, pale. Male flowers 1–6 per cluster; pedicels 0.5–2 mm long; sepals 0.3–1.5 mm long, white, yellow-brown or green, somewhat fleshy; stamen filaments connate. Female flowers solitary, pedicels 0.2–7 mm long; sepals 0.8–2 mm long, white or green, fleshy; styles 3, variously divided, 0.2–0.6 mm long. Capsule ovoid, 3.5–6 mm long, 3–7 mm wide; seeds yellow-brown, 2.5–5 mm long wide, prominently rugose, sulcate to ruminate. Flowers most of year (depending on rains).

Also WA, NT, SA, Qld, NSW. Very rare in Victoria, known from the Murray River floodplain in far north-west of the State. Possibly because the species is a post-flood ephemeral it had not been collected since 1981, but rediscovered at Mulcra Island in 2017 and at Hattah-Kulkyne National Park in 2018. Typically occurring only after substantial floods.

Source: Hunter, J.T.; Bruhl, J.J. (1999). Sauropus. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-05-11
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life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Malpighiales
genus Sauropus
Higher taxa