Nomenclature
Scientific Name:
Gentianella calcis subsp. manahune Glenny & Molloy, New Zealand J. Bot. 42: 472 (2004)
Etymology:
The epithet manahune refers to the name of the station where the plant is found. 'Manahune' means limestone bluff in Maori.
 Description

Plants in flower c. 50 mm tall. Flowering stems 1–3 per plant; largest flowering stem 1.3–1.4 mm diam. at base, 0.5–0.7 diam. when dry, purple-black, leaves 8 pairs per stem, lowest pedicels from halfway along flowering stems. Rosette leaves linear to very narrowly elliptic to very narrowly obovate, 30–60 mm long, 2.8–4.1 mm wide, green, V-shaped, recurved at the acute apex; margins finely denticulate; petiole distinct, 14–32 mm long, 0.7–1.1 mm wide at leaf base. Pedicels 6.5–12 mm long, 0.75–0.9 mm diam., 0.4–0.5 mm diam. when dry. Flowers 24–42 per plant, 12–15 mm long. Calyx 6.8–7.0 mm long; lobes 4.3–5.7 mm long, c. 1.5 mm wide at base, green tinted purple-black, apices acute, recurved, margins minutely denticulate, sinus hairs c. 2 per sinus. Corolla 11.7–13.8 mm long, veins purple; tube 3.1–4.3 mm long; lobes 7.7–9.5 mm long, 5.4–6.0 mm wide, lobe apices slightly toothed, hairs below sinus present, curly; nectary 2.0–2.1 mm from corolla base, V-shaped, deep but without a flap. Filaments 6.6–8.1 mm long from corolla base, 0.45– 0.6 mm wide. Anthers 1.75–2.0 mm long. Ovules 15–21 per ovary. Ovary becoming blue at the apex after fertilisation. Capsule 8.0–11.5 mm long. Seeds c. 0.70 × 0.55 mm. FL May.

[Reproduced from Glenny (2004, New Zealand J. Bot. 42: 361-530) with permission from The Royal Society of New Zealand.]

 Biostatus
Indigenous (Endemic)
 Bibliography
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 Critical]
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 Critical]
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 Critical]
Glenny, D. 2004: A revision of the genus Gentianella in New Zealand. New Zealand Journal of Botany 42(3): 361–530.