Plants of South Eastern New South Wales

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Lepidium hyssopifolium

Common name

Aromatic peppercress, Basalt peppercress, Peppercress

Family

Brassicaceae

Where found

Woodland, grassland, gardens, and disturbed sites. ACT and tablelands. Liverpool to Tahmoor. Occasionally elsewhere.

Notes

Perennial herb to 0.50 m tall. Stems finely bristly or hairless. Leaves basal and alternating up the stems. Basal leaves to 10 cm long,  fern-like and deeply dissected with linear lobes, or toothed. Stem leaves alternating up the stems, to 4 cm long, 1–2.5 mm wide, reducing, toothed or entire. Flowers greenish, small, with 4 sepals 0.5–0.8 mm long and 4 tiny petals or 0 petals. Flowers in an unbranched cluster which elongates in seed. Flowers mostly summer–autumn. Seed cases egg-shaped to narrow-elliptic, sometimes hairy, 2–5 mm long, 1.5–2.5 mm wide, with narrow wings in the upper half, and a small notch at the apex. (Needs a hand lens or a macro app on your phone/tablet to see.) Stalks hairy, 2–5 mm long, spreading.

Endangered Australia. Endangered NSW. Provisions of the NSW Biodiversity Conservation Act 2016 No 63 relating to the protection of protected plants generally also apply to plants that are a threatened species.

Endangered Vic. Listed in the Flora and Fauna Guarantee Act Vic.

NSW Threatened Species profile with photos:  http://www.environment.nsw.gov.au/threatenedspeciesapp/profile.aspx?id=10462 (accessed 23 January, 2019)

PlantNET description:  http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Lepidium~hyssopifolium  (accessed 23 January, 2019)