Inihina, hakina, hinahina, Chatham Island mahoe
Hymenanthera latifolia var. chathamica F.Muell., Hymenanthera chathamica (F.Muell.) Kirk
Vascular – Native
Trees & Shrubs - Dicotyledons
The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.
2n = 32
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 | At Risk – Naturally Uncommon | Qualifiers: IE, RR
Previous conservation statuses
2009 | At Risk – Naturally Uncommon | Qualifiers: IE
2004 | Range Restricted
Small tree bearing oval toothed leaves which have the veins much more visible on the underside inhabiting the Chatham Islands. Leaves 5-13cm long by 2-5cm wide, teeth or margin more obvious towards the tip. Flowers small. Fruit small, white flecked purple or entirely dark purple.
Endemic to the Chatham Islands: Rekohu (Chatham), Rangihaute (Pitt), Wharekaikite (Rabbit), Mang’ere, Tapuaenuku, and Hokorereoro (South East) Islands.
Widespread common tree of coastal forest. Also prominent on limestone outcrops around Te Whanga. Also common on coastal scrub on some of the smaller islands of the Chatham group. Melicytus chathamicus appears to prefer fertile soils it is scarce on the deeper forest peat soils of the southern tablelands.
Dioecious, erect, densely branched, virgate, evergreen shrub to tree up to 10 m. tall; bark smooth, grey-green, often mottled and bearing lichen growth (Bacidia, graphid lichens especially). Branchlets 2.0–3.0 mm diameter, terete, green to green-brown, glabrescent, lenticelate, lenticels sparse. Adult leaves coriaceous, alternate glabrous; petiole 10-25 mm, plano-convex, glabrous, green or green-tinged pink or red; lamina (30-)50-120 × 20-60 mm, narrow- to broad-lanceolate, oblanceolate or oval, rarely obovate, dull to slightly glossy, green, olive-green or yellow-green, adaxially darker than abaxially, margins serrated, usually in distal half of leaf, teeth (3–)6–7–10 per margin, sometimes entire; apex, acute, subacute or obtuse; base attenuate or cuneate. Stipules 1.5–2.3 × 0.8–1.3 m, narrowly deltoid, caducous, dark green, often pink-tinged or completely red. Inflorescences (2–)4-flowered fascicles, arising from branchlets. Male flowers: pedicels 3.8–6.2 mm long, slender, decurved, glabrous. Sepals 5, unequal, imbricate, 1.8–2.6 × 1.8–2.4 mm, broadly triangular, margins ciliate, purple, apices subacute to obtuse. Corolla broadly cylindric to subcampanulate, 4.2–5.1 × 3.2–3.6 mm. Petals 5, 4.4–5.4 × 2.4–2.6 mm, oblong, distal quarter reflexed, colour variable ranging from pale yellow tinged apricot, apricot, pink or rose, margins entire, glabrous. Anthers sessile, oblong, 1.0–1.2 mm long, yellow, connate to form an urceolate tube, appendage membranous, dark yellow to orange, triangular, apex fimbriate, exceeding anthers. Gynoecium vestigial. Female flowers: pedicels 3.6–5.8 mm long, slender, decurved, glabrous. Sepals 5, unequal, imbricate, 1.6–2.4 × 1.6–2.2 mm, triangular, margins ciliate, green or purple with membranous margins, apices subacute to obtuse. Corolla broadly cylindric to subcampanulate, 4.2–5.1 × 3.2–3.6 mm. Petals 5, 4.4–5.4 × 2.4–2.6 mm, oblong, distal quarter reflexed, colour variable ranging from pale yellow tinged apricot, apricot, pink or rose, margins entire, glabrous. Anthers 0.6–0.7 mm long, vestigial, sterile; appendage membranous, orange to tan, narrowly triangular, apex fimbriate, exceeding anthers. Ovary 1.4–1.8 mm long, glabrous, broadly ovoid, greenish-white, cream or pale yellow. Style 0.3–0.4 mm long, glabrous, persistent in fruit; stigmas 2, 0.4–0.6 mm long, flat, spreading, cream or pale yellow, withering and falling. Fruit 16–18 × 14–16 mm, ovoid, globose berry, initially green, maturing white, white mottled purple, or white flushed purple; calyx persistent; mesocarp 0.8–1.3 mm thick, fleshy, white. Pyrenes 2, 4.0–5.0 × 4.0–5.2 mm, broadly ovoid to circular, with a flattened surface plane or with 2–3-faces and ridges inbetween, testa dark purple-brown, black-brown, brown or orange, surfaces distinctly tuberculate, indistinctly ridged or tuberculate.
Melicytus chathamicus is a singular species which could not be confused with any other indigenous Chatham Islands plant. The thick, olive-green, leathery toothed lanceolate to oval leaves, flowers which emerge in bunches from the branchlets, and profusion of globose, white, white-flecked purple or white tinged purple berries serve to immediately distinguish it.
September - April
Widespread and common in forested habitats secure from browsing animals.
melicytus: From the Greek meli (honey) and kytos (hollow container), referring to the staminal nectaries of the flowers. Literally “honey-cave”
chathamicus: From the Chathams
Where To Buy
Occasionally available from specialist native plant nurseries.
Recorded growing in the wild in the Awarua Ecological District in Southland, presumably from garden escapes.
Fact sheet prepared by P.J. de Lange for NZPCN (26 April 2022). Description by P.J. de Lange (26 April 2022).
Please cite as: de Lange, P.J. (Year at time of access): Melicytus chathamicus Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/melicytus-chathamicus/ (Date website was queried)