Arenaria serpyllifolia subsp. serpyllifolia

Thyme-leaved Sandwort

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Annual or biennial with slender, branching taproot, minutely scabrous, rarely sparsely glandular-hairy above. Stems diffuse but often bushy, 2–30 cm long. Leaves sessile or subsessile, 1-veined, ciliate, 3–5(–10) mm long, 2–3(–6) mm wide. Inflorescence usually diffuse; bracts herbaceous. Flowers 5–8 mm diam.; pedicels 2–5 mm long, more or less erect in fruit; calyx scabrous, sparsely glandular-puberulent, sepals ovate-lanceolate, acute, hairy, 3–5-veined, the inner scarious-margined, 3–4 mm long; petals white, ovate to narrow-obovate, two-thirds length of sepals. Capsule urceolate-ampulliform with firm, curved walls, 4–5 mm long, 1.5–2 mm diam; seeds black or dark red, bluntly tuberculate, 0.5–0.7 mm long.  Oct.

*EGU, *GipP, *OtP, *WaP, *WPro. Native to Europe, temperate Asia, North America. A rather uncommon weed of disturbed ground.

This species and A. leptoclados have been much confused in the past, being difficult to distinguish without mature fruit. 

Source: Adams, L.G. (1996). Caryophyllaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Daniel Ohlsen, 2017-06-29
Distribution map


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Arenaria serpyllifolia subsp. serpyllifolia in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Arenaria serpyllifolia subsp. serpyllifolia in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Gippsland Plain present naturalised
Otway Plain present naturalised
Warrnambool Plain present introduced
East Gippsland Uplands present introduced
Wilsons Promontory present naturalised

State distribution

Distribution map
South Australia
New South Wales