Nomenclature
Scientific Name:
Gentianella calcis Glenny & Molloy, New Zealand J. Bot. 42: 470 (2004) subsp. calcis
 Description

Plants in flower 140–200 mm tall. Flowering stems 1–5 per plant; largest flowering stems c. 1.8 mm diam. at base, 1.2–1.6 mm diam. when dry, purple-black; flowering stem leaves 4 pairs per stem, lowest pedicels from near apex of flowering stem. Rosette leaves linear, 68–83 mm long, 2.6–4.1 mm wide, green, V-shaped; apex acute, recurved; margins minutely denticulate or smooth; petiole not distinct, leaf 1.1–1.6 mm wide at leaf base. Flowering stem leaves linear, slightly recurved. Pedicels 3.5–14 mm long, 0.8–1.0 mm diam., 0.5–0.6 mm diam. when dry. Flowers 9–28(–78) per plant, 15–18 mm long. Calyx 7.5–14.1 mm long, green tinted purple-black; lobes 4.6–10.2 mm long, 1.9–2.5 mm wide at base, plane to somewhat recurved. Corolla 13.5–17.1 mm long, veins colourless; tube 3.4–5.1 mm long; lobes 10.0–12.3 mm long, 6.2–9.0 mm wide, margins toothed, hairs below sinus absent or rarely present and then straight; nectary 0.9–1.6 mm from corolla base, V-shaped to pocket-like, fl ap margin smooth. Filaments 6.5–8.6 mm long from corolla base, 0.6–0.9 mm wide. Anthers 1.9–3.1 mm long, extrorse at anthesis. Ovules (9–)14–35 per ovary. Ovary becoming violet after flowering. Capsule 13.0–17.5 mm long.

[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.