Coprosma elatirioides
Synonyms
None (first described in 2003)
Family
Rubiaceae
Flora category
Vascular – Native
Endemic taxon
Yes
Endemic genus
No
Endemic family
No
Structural class
Dicotyledonous Trees & Shrubs
NVS code
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.
COPELA
Chromosome number
2n = 44
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 | Not Threatened
Previous conservation statuses
2009 | Not Threatened
2004 | Not Threatened
Brief description
A low wide-angled bushy shrub with small narrow leaves inhabiting open damp areas in the South Island. Twigs long slender and flexible, covered in short fuzz. Leaves curved sideways, very narrow, around 10mm long, with tiny clustered hairs on underside (lens needed), margin red. Fruit white with blue flecks.
Distribution
Endemic. South and Stewart Islands.
Habitat
Lowland to subalpine, favouring open swamps, mires, pakihi, and associated poorly drained soils, often in wetland systems dominated by red tussock (Chionochloa rubra) and/or wire rush (Empodisma minus).
Features
Semi-erect to prostrate, shortly rhizomatous, evergreen, dioecious, trailing shrub up to 0.5-1 x 2-6(-8) m. Main stems 2 or more, up to 40 mm diam., arising from a dense network of lateral roots, buried stems and short-rhizomes; branches numerous, wiry, slender, lianoid, long-trailing, arising at angles of > 45 deg, frequently rooting at nodes. Mature outer bark rust-brown or maroon-brown; inner bark lime-green to green yellow. Brachyblasts numerous, very leafy; internodes 0.1-0.2 mm, scarcely visible, obscured by leaves and stipules. Leaves opposite, linear-filiform, falcate, coriaceous; petioles scarcely differentiated from lamina; lamina often falcate, 0.2-0.5 mm long, crimson or dark green, (4-)10(-30) x (0.3-)0.6(-1.2) mm, margins involute, apex obtuse, base attenuate. Leaf colour usually wine-red, sometimes light green or dark green with red margins, adaxial surface bearing patent, deciduous eglandular hairs (40x magnification); leaf domatia common, 1-3 per leaf when present; midrib scarcely evident. Stipules 0.3-0.6 mm long, orange-brown or purple, shortly sheathing, sheath < 1/4 length of stipule and apical denticle, narrowly triangular, marginal fringe chartaceous, dark abaxial surface heavily invested in white hairs, 0.1-0.5 mm long; margin of stipules entire; denticles (3-)5(-6), glandular, black, deciduous; with 1-2 at apex of stipule, and (1-)3(-4) on stipule sheath. Plants unisexual; flowers subsessile, axillary, solitary or paired in uppermost leaves of previous growth flush. Pedicel minute. Male flowers mostly paired; calyx vestigial; corolla 5-6 mm long; tube 1.5-2 mm long, funnelform, pale yellow copiously flecked with red or pink; lobes 3-4, broadly elliptic or lanceolate, 4.5-5 x 1.6-1.8 mm, recurved; filaments 4-6 mm long, cream; anthers 3-4, 2.5-3 x 1-1.5 mm, oblong, apex acute or attenuated; pollen creamy yellow. Female flowers mostly solitary; calyx adnate to ovary, pale yellow flecked crimson or pink; lobes 4, 0.75- 1 mm long, obovate to oblanceolate, basal portion pale yellow flecked with red fading to pale yellow in upper portion; corolla tube 2-2.5 mm long, narrowly campanulate, yellow, striped and/or flecked red; lobes 3-4, linear-lanceolate to lanceolate 2.5-3 x 0.6 mm, strongly decurved; ovary ovoid, green, 0.8-1 x 0.6-0.8 mm; stigmas 2, 8- 14 mm long, terete, pale yellow to cream, densely papillose-pubescent. Drupe ellipsoid, 4-6 x 3-4 mm, white stippled with dark blue flecks (rarely entirely dark navy blue); calyx persistent. Pyrenes (1-)2, unequal; the larger (2.5-)3.0(-4.5) x 1.8-2.5 mm, ovoid to ellipsoid, plano-convex, apex obtuse, rarely acute; base obtuse to acute; operculum distinct, obovate-obtriangular.
Similar taxa
Differs from the vegetatively similar C. intertexta by its long-trailing, subscandent, almost lianoid habit; longer branchlets; shortly sheathing conspicuously denticulate stipules; fleshy coriaceous, adaxially pubescent leaves with obtuse apices; and its restriction to wetlands. From other Coprosmas it differs by its long trailing, non-flexuous, wiry branchlets, stipule characters, and its habitat preference.
Flowering
October - November
Flower colours
Red/Pink, Yellow
Fruiting
March - July
Life cycle
Fleshy drupes are dispersed by frugivory (Thorsen et al., 2009).
Propagation technique
Easily grown from fresh fruit and cuttings. An excellent wetland plant.
Etymology
coprosma: From the Greek kopros ‘dung’ and osme ‘smell’, referring to the foul smell of the species, literally ‘dung smell’
Attribution
Description based on Markey and de Lange (2003)
References and further reading
Markey, A.S.; de Lange, P.J. 2003: A new species of Coprosma Sect. Acerosae (Rubiaceae) endemic to the South and Stewart Islands of New Zealand. New Zealand Journal of Botany 41: 459-473.
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
Citation
Please cite as: de Lange, P.J. (Year at time of access): Coprosma elatirioides Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/coprosma-elatirioides/ (Date website was queried)