Gentianella calcis subsp. manahune
Vascular – Native
Dicotyledonous Herbs other than Composites
Current conservation status
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley.
2012 | Threatened – Nationally Critical | Qualifiers: EF, OL
Previous conservation statuses
2009 | Threatened – Nationally Critical | Qualifiers: OL, EF
2004 | Threatened – Nationally Critical
Endemic. South Island, South Canterbury, at Albury and Manahune
A limestone endemic growing in lowland to montane areas on limestone bluffs in rock joints, clefts, crevices and ledges
Perennial tufted herb. Petiole distinct, 14-32 mm long. Rosette leaves linear to very narrowly elliptical or narrowly obovate 30-60 mm long, 2.8-4.1 mm wide, green, V-shaped in cross-section, recurved at the acute leaf apex; margins minutely serrulate. Cauline leaves, 8 pairs per stem, linear, recurved, usually smaller than rosette leaves. Flowering stems, purple-black, 1-3 per plant. Pedicels 6.5-12 mm long, 0.75-0.9 mm diam. Flowers 24-42 per plant, 12-15 mm long. Calyx green, tinted purple black, 6.8-7 mm long; lobes 4.3-5.7 mm long, 1.5 mm wide at base, apices acute, recurved, margins minutely serrulate. 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, margins toothed; nectary 2.0-2.1 mm from corolla base, V-shaped deep but without flap. Filaments 6.6-8.1 mm long from corolla base, 0.45-0.6 mm wide. Anthers 1.75-2.0 mm long, extrorse at anthesis. Ovules 15-21 per ovary. Ovary blue at apex after fertilisation. Capsules 8-11.5 mm.
Allied to the other three subspecies of G. calcis Glenny et Molloy but distinguished from all of these by the purple Corolla veins. For differences between G. calcis subsp. manahune and G. astonii T.N.Ho et S.W.Liu see under G. calcis subsp. calcis.
Difficult. Should not be removed from the wild.
Under severe threat from the spread of Hieraceum pilosella L. and pasture grasses, habitat loss due to changes in stocking regimes, and through browsing from feral goats. Limestone quarrying is a long-term threat, while the very small population is vulnerable to erosion, boulder and rock falls and erosion. Previously recorded as Gentiana aff. astonii (c) (CHR 542276; Manahune) in de Lange et al. (2004).
gentianella: Little Gentiana (named after Gentius, 6th century king of Illyria, who found the roots of the yellow gentian to have a healing effect on his malaria-stricken troops)
Where To Buy
Not Commercially Available
Description modified from Glenny (2004)
References and further reading
de Lange et al., 2004, Threatened and uncommon plants on New Zealand, New Zealand Journal of Botany 42: 45-76.
Glenny, D. 2004: A revision of the genus Gentianella in New Zealand. New Zealand Journal of Botany 42: 361-530.