Classification
 Nomenclature
Scientific Name:
Lepidium oleraceum G.Forst. ex Sparrm., Nova Acta Regiae Soc. Sci. Upsal. 3: 193 (1780)
Synonymy:
Type Collection: From cultivated plants, originally collected from New Zealand. Neotype: S, Sparrman, Nova Zelandia.
  • = Thlaspi oleraceum Poir. in Poiret, Encycl. [J. Lamarck & al.] 7, 547 (1806)
  • = Nasturtium oleraceum Kuntze, Revis. Gen. Pl. 2, 937 (1891)
  • = Lepidium oleraceum var. acutidentatum Kirk, Stud. Fl. New Zealand 35 (1899)
Type Collection: 'NORTH and SOUTH Islands; STEWART Island; the SNARES; AUCKLAND Islands; CHATHAM Islands. In places near the sea.' Neotype: T. Kirk 367, March 1869, Taranga Islands – labelled as 'Lepidium oleraceum var. incisum' in Kirk’s hand. WELT SP027646!
  • = Lepidium oleraceum var. frondosum Kirk, Stud. Fl. New Zealand 34 (1899)
Type Collection: 'Banks and Sol., MSS and Ic.' Lectotype: WELT SP063976/A! Isolectotype: WELT SP063976/B!
  • = Lepidium oleraceum var. serrulatum Thell., Lepidium 293 (1906)
Holotype: P! 'Lepidium oleraceum Forst. var. serrulatum Thell. n. var. 1905 3 VIII, New River, Godey' (label in A. Thellung’s hand).
Etymology:
The exact meaning of the species 'oleraceum' was not given by Sparrman (1780). However the epithet derives from the Latin 'oleraceus' meaning 'used for herbs or vegetables' (Taylor 2002), a point that Sparrman had alluded to in a brief note he wrote in Latin on the backside of the neotype sheet.
Vernacular Name(s):
cook's scurvy grass; Heketara; Nau; Ngau
 Description

Glabrous perennial. Stems decumbent to erect, stout, usually flexuous, to 50 cm tall. Lvs all similar, narrow-oblanceolate to obovate, evenly toothed in distal portion, cuneately narrowed to winged petiole at base, bright green, fleshy, 2–10 × 1.5–4 cm. Racemes terminal and lateral, 5–10 cm long at fruiting; pedicels erecto-patent, (3)–5–10 mm long at fruiting. Sepals 1–1.5–(2) × 0.5–1 mm. Petals white, obovate-spathulate, slightly > to twice length of sepals. Stamens 4. Silicles broadly ovate, usually truncate at base, acute at apex, not winged, 3–4–(5) × 2.5–3.5–(5) mm; style 0.1–0.2 mm long; seeds ovoid, brown, not winged, 1.5–2 mm long.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Indigenous (Endemic)
 Phenology

Flowering: (Jul.)–Dec.–Feb.–(Jun.); Fruiting: (Jul.)–Dec.–Feb.–(Jun.)

 Bibliography
de Lange, P.J.; Heenan, P.B.; Given, D.R.; Norton, D.A.; Ogle, C.C.; Johnson, P.N.; Cameron, E.K. 1999: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 37: 603–628.
de Lange, P.J.; Heenan, P.B.; Houliston, G.J.; Rolfe, J.R.; Mitchell, A.D. 2013: New Lepidium (Brassicaceae) from New Zealand. PhytoKeys 24: 1–147.
de Lange, P.J.; Norton, D.A.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Hitchmough, R.; Townsend, A.J. 2009: Threatened and uncommon plants of New Zealand (2008 revision). New Zealand Journal of Botany 47: 61–96. [Nationally Vulnerable]
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76.
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [Nationally Endangered]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [Nationally Endangered]
Kirk,T. 1899: The Students' Flora of New Zealand and the Outlying Islands. Government Printer, Wellington, N.Z.
Kuntze, C.E.O. 1891: Revisio Generum Plantarum. Vol. 2. Arthur Felix, Leipzig.
Poiret, J.L.M. 1806: Encyclopedie Methodique. Vol. 7. Panckoucke, Paris.
Sparmann, A. 1780: Tres novae plantae, descriptae. Nova Acta Regiae Societatis Scientiarum Upsaliensis 3: 190–195.
Thellung, A. 1906: Die Gattung Lepidium (L.) R. Br. Eine Monographische Studie. Basel.