Classification
 Nomenclature
Scientific Name:
Veronica macrocalyx J.B.Armstr., Trans. New Zealand Inst. 13: 353 (1881) var. macrocalyx
Synonymy:
  • Veronica haastii var. macrocalyx (J.B.Armstr.) Cheeseman, Man. New Zealand Fl. 534 (1906)
  • Hebe haastii var. macrocalyx (J.B.Armstr.) Cockayne & Allan, Trans. New Zealand Inst. 57: 42 (1926)
  • Hebe macrocalyx (J.B.Armstr.) G.Simpson, Trans. Roy. Soc. New Zealand 79: 427 (1952) var. macrocalyx
  • Leonohebe haastii var. macrocalyx (J.B.Armstr.) Heads, Bot. Soc. Otago Newsl. 5: 6 (1987)
 Description

Leaves mostly 7–13 mm long, rarely shorter; lamina very weakly keeled; keel terminating short of apex; margins greenish or translucent, smooth or weakly erose toward apex, glabrous. Calyx lobes green-tipped.

 Recognition

Bayly & Kellow (2006) note that plants at Mt Rolleston may be hard to place in either variety.

 Distribution

South Island: Canterbury, Westland (from Mt Alexander to Mt Harman, near Brownings Pass). A specimen of var. macrocalyx from the ridge above Avoca, Canterbury (CHR 76141), is from much further east than all others, but the record is accepted because other species characteristic of the main divide (e.g., V. linifolia) also reach the Torlesse Range.

 Habitat

Alpine rock debris and scree. Recorded elevations range from 1080 to 1900 m.

 Biostatus
Indigenous (Endemic)
 Cytology

2n = 42 (see Bayly & Kellow 2006, as Hebe macrocalyx var. macrocalyx).

 Bibliography
Armstrong, J.B. 1881: A synopsis of the New Zealand species of Veronica, Linn., with notes on new species. Transactions of the New Zealand Institute 13: 344–359.
Bayly, M.J.; Kellow, A.V. 2006: An Illustrated Guide to New Zealand Hebes. Te Papa Press, Wellington.
Cheeseman, T.F. 1906: Manual of the New Zealand Flora. Government Printer, Wellington.
Cockayne, L.; Allan, H.H. 1926: The present taxonomic status of the New Zealand species of Hebe. Transactions of the New Zealand Institute 57: 11–47.
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. [as Hebe macrocalyx (J.B.Armstr.) G.Simpson var. macrocalyx] [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. [as Hebe macrocalyx (J.B.Armstr.) G.Simpson var. macrocalyx]
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. [Naturally Uncommon]
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. [as Hebe macrocalyx (J.B.Armstr.) G.Simpson var. macrocalyx] [Naturally Uncommon]
Garnock-Jones, P.J. 2023: Veronica. In: Breitwieser, I. (ed.) Flora of New Zealand – Seed Plants. Fascicle 9. Manaaki Whenua Press, Lincoln.
Garnock-Jones, P.J.; Albach, D.; Briggs, B.G. 2007: Botanical names in Southern Hemisphere Veronica (Plantaginaceae): sect. Detzneria, sect. Hebe, and sect. Labiatoides. Taxon 56: 571–582.
Heads, M. 1987: New names in New Zealand Scrophulariaceae. Botanical Society of Otago Newsletter 5: 4–11.
Kellow, A.V.; Bayly, M.J.; Mitchell, K.A.; Markham, K.R.; Brownsey, P.J. 2003: A taxonomic revision of Hebe informal group "Connateae" (Plantaginaceae), based on morphology and flavonoid chemistry. New Zealand Journal of Botany 41(4): 613–635.
Simpson, G. 1952: Notes on some New Zealand plants and descriptions of new species (No. 5). Transactions of the Royal Society of New Zealand 79: 419–435.