Classification
Class
Magnoliopsida Brongn.
Order
Brassicales Bromhead
Family
Cruciferae
Genus
Pachycladon Hook.f.
 Nomenclature
Scientific Name:
Pachycladon wallii (Carse) Heenan & A.D.Mitch. in Heenan et al., New Zealand J. Bot. 40: 558 (2002)
Synonymy:
  • ≡ Nasturtium wallii Carse, Trans. & Proc. New Zealand Inst. 57: 92 (1927) – as Wallii
  • ≡ Cheesemania wallii (Carse) Allan, Trans. & Proc. Roy. Soc. New Zealand 76: 594 (1947)
 Description

Stock stout, with deeply. descending taproot, crowned by dense rosette of basal lvs. Lvs up to 18 cm. long, coriac., glab., lanceolate-spathulate; lamina ± 2–5 × 1–2.5 cm., very deeply 4-lobed; lobes obtuse, mucronulate; petiole broad, flat. Cauline lvs absent. Infl. an unbranched raceme up to 3 dm. tall, with ∞ subcorymbosely arranged fls. Sepals ± 4–5 mm. long, oblong; petals white, ± 10 mm. long, spathulate, long- clawed. Siliques suberect, narrow-linear, up to 5 cm. × 3 mm. Seeds compressed.

[From: Allan (1961) Flora of New Zealand. Volume 1 as Cheesemania wallii (Carse) Allan]

 Biostatus
Indigenous (Endemic)
 Bibliography
Allan, H.H. 1947: Notes on New Zealand Floristic Botany, Including Description of New Species etc. (No. 8). Transactions and Proceedings of the Royal Society of New Zealand 76: 589–596.
Carse, H. 1927: Botanical Notes, with Descriptions of New Species. Transactions and Proceedings of the New Zealand Institute 57: 89–93.
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. [Naturally uncommon]
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. [Declining]
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. [Naturally Uncommon]
Heenan, P.B.; Mitchell, A.D.; Koch, M. 2002: Molecular systematics of the New Zealand Pachycladon (Brassicaceae) complex: generic circumscription and relationships to Arabidopsis sens. lat. and Arabis sens. lat. New Zealand Journal of Botany 40(4): 543–562.