None. First described in December 2008
Vascular – Native
Herbs - Dicotyledons other than Composites
2n = 16
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) – more information about this can be found on the NZTCS website. This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants.
Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – an interim threat classification status has not been assessed by the NZTCS panel.
- Conservation status of New Zealand indigenous vascular plants, 2017 . 2018. 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. Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2017 | Threatened – Nationally Critical | Qualifiers: DP, EF, RR
Previous conservation statuses
2012 | Threatened – Nationally Critical | Qualifiers: DP, EF
2009 | Threatened – Nationally Critical | Qualifiers: DP, EF
2004 | Serious Decline
Endemic. New Zealand: North Island (Volcanic Plateau).
Montane to subalpine in depressions, hollows, or wet ground in tussockland, shrubland and river terraces, and tarn or wetland margins.
Wetland plant indicator status rating
FACW: Facultative Wetland
Usually is a hydrophyte but occasionally found in uplands (non-wetlands).
Herbs, perennial, rhizomatous, glabrous. Stems up to 50 mm long, 0.2–0.3 mm diam., usually prostrate, without pellucid glands, quadrangular. Leaves sessile, 1.5–4.5 × 0.3–1.2 mm, narrowly elliptic, oblong, or lanceolate, grey-green to olive-green, usually ruddy on margin and back; pellucid glands up to 0.05 mm diam.; margin planar to slightly sinuate. Inflorescence terminal, occ. axillary, flowers 1–3. Pedicels 0.7–1.8 mm long, dark green to olive-green, often ruddy. Flowers 3–6 mm diam. Sepals 4–5, 1.7–2.8 × 0.6–1.0 mm, oblong to elliptic, dark green to olive-green, usually ruddy margin and distally, width unequal. Petals 5, 2.0–3.3 × 0.9–1.2 mm, yellow, elliptic, pellucid glands absent; margins entire; apex subacute to obtuse. Stamens 7–8, 1.2–2.0 mm long, pale yellow, terete; anthers c. 0.2 mm long, yellow. Ovary 1.4–2.0 mm long, ovoid to broadly ovoid, light green; styles 3(–4), 0.3–0.4 mm long, spreading. Capsule 2.3–2.9 × 1.5–2.5 mm, cylindric to globose, style persistent. Seeds 0.5–0.6 × 0.2–0.3 mm, orange-brown to light yellow, aging to dark brown, oblong-obovate or oblong, terete, semi-glossy.
Distinguished from H. pusillum by the rhizomatous and compact growth habit, leaves that are grey-green to olive-green and usually ruddy and with smooth margins, and smaller flowers. H. pusillum is a larger and more robust plant, has green leaves with distinctly sinuate margins, and flowers up to 9 mm in diameter. From the closely related H. rubicundulum, H. minutiflorum differs in having smaller leaves and flowers which are less than 6 mm in diameter
Seeds are wind and water dispersed (Thorsen et al., 2009).
Difficult. Best grown in a small pot kept partially submerged in water. Plants are winter dormant and often die right down to ground level, resprouting in spring. An attractive plant on account of the dark red leaves and bright yellow flowers.
Threatened by competition from weeds and loss of it habitat due to forestry and farming. Although this species still occurs at a number of sites, collectively these do not exceed 1 hectare in extent. None of the populations are secure from the threats, and at all known sites H. minutiflorum is in decline. Previously regarded (as Hypericum aff. japonicum (a) (CHR 165889; Volcanic Plateau)) as Serious Decline in de Lange et al. (2004).
hypericum: From the Greek hyper (above) and eikon (picture), the plant was hung above pictures to ward off evil spirits
Where To Buy
Can be purchased from specialist nurseries.
Fact Sheet prepared for the NZPCN by P.J. de Lange (1 July 2008). Description from Heenan (2008)
References and further reading
de Lange et al., 2004, Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42: 45-76.
Heenan, P.B. 2008: Three newly recognised species of Hypericum (Clusiaceae) from New Zealand. New Zealand Journal of Botany 46: 547-558.
Thorsen, M. J.; Dickinson, K. J. M.; Seddon, P. J. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics 11: 285-309
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Hypericum minutiflorum Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/hypericum-minutiflorum/ (Date website was queried)