The New Zealand Plant Conservation Network

Species

Pimelea oreophila subsp. hetera

Etymology

Pimelea: from the Greek pimele, referring to the seeds
oreophila: Mountain lover

Common Name(s)

Pimelea

Current Conservation Status

2012 - Not Threatened

Conservation status of New Zealand indigenous vascular plants, 2012
The conservation status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2012 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2009 and replaces all previous NZTCS lists for vascular plants. Authors: Peter J. de Lange, Jeremy R. Rolfe, Paul D. Champion, Shannel P. Courtney, Peter B. Heenan, John W. Barkla, Ewen K. Cameron, David A. Norton and Rodney A. Hitchmough. File size: 792KB

Previous Conservation Status

2009 - Data Deficient

Authority

Pimelea oreophila subsp. hetera C.J.Burrows

Family

Thymelaeaceae

Flora Category

Vascular - Native

NVS Species Code

PIMOSH

Structural Class

Dicotyledonous Lianes and Related Trailing Plants

Synonyms

None (first described in 2011)

Distribution

Endemic. New Zealand: South Island (Nelson, Marlborough, northern Canterbury to Hanmer and the upper Hurunui River)

Habitat

Montane to alpine (usually above the treeline) in tall tussock grasslands sometimes on rock and debris slides at lower altitudes.

Features

Procumbent, trailing shrub, with few to many, moderately thick (2.5–3.5 mm), light brown, flexible young stems, these moderately densely covered in short, appressed hairs, internodes 1–4 mm, node buttresses lunate, not prominent on leafless stems. Older stems brown, thick (to 5 mm), up to 500 mm long, occasionally with adventitious roots, sometimes climbing in upright shrubs. Reduced in stature on exposed sites with rocky substrates, sometimes forming short-stemmed, appressed rosettes. Branching mainly sympodial. Young stems brown, moderately densely covered in short or moderately long, white, grey or sometimes yellowish appressed hair cover; older stems darker brown, glabrate. Internodes of young stems 1–5mm long. Node buttresses lunate to elongate, or sometimes extending the full length of internodes, with bands of hair between; usually not very prominent on leafless stems. Leaves decussate, on short (0.5–1.0 mm), often red petioles, ascending at first, usually becoming patent, often with a distichous appearance on prostrate stems. Lamina 4–8 × 2–4 mm, elliptic to ovate, medium green, flat to slightly keeled, sometimes red-margined, mid-vein evident; tip acute but usually blunt-pointed, sometimes obtuse; base cuneate; abaxial hairs dull white, short, varying from very sparse to a continuous but only moderately dense cover, sometimes tufted at the tip, often becoming glabrous as leaves age; stomata on both adaxial and abaxial surfaces. Inflorescences terminal, 5–15-flowered, receptacle densely covered in short hairs. Involucral bracts 4, the same size as ordinary leaves, or larger (6 × 4 mm). Plants gynodioecious. Flowers white, fragrant, on short pedicels (0.3 mm) densely covered with short hairs outside; inside hairless. Female tube 2.5–4.0 mm long, ovary portion 3 mm, calyx lobes 1–2 ×1 mm; hermaphrodite tube 4–6 mm long, ovary portion 2 mm, calyx lobes 2.0–3.0 × 1.5–2.0 mm. Anther dehiscence introrse. Ovary with dense clump of short or long hairs at summit. Fruits ovoid, fleshy, red, 4 × 3 mm. Seeds ovoid 2.7 × 2.3 mm.

Similar Taxa

Distinguished from the other subspecies of Pimelea oreophila by the short or long leaves whose abaxial surface is either sparsely or moderately densely covered in short hairs and by the consistent absence of an apical coma. Pimelea oreophila subsp. hetera is also recognised in the field by its geographic restriction to Nelson, Buller, Marlborough and northern Canterbury.

Flowering

September - February

Flower Colours

White

Fruiting

unknown

Propagation Technique

Easily grown from semi-hardwood and hardwood cuttings. Does best in a well drained soil and planted in a sunny situation (such as in a rockery or pot)

Threats

Probably not threatened. However as Pimelea oreophila subsp. lepta was not assessed by Burrows (2011) using the New Zealand Threat Classification Manual (Townsend et al. 2008) it has no valid threat assessment. So at this stage it seems best to recommend a interim threat assessment of "Data Deficient".

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

This page last updated on 6 Jan 2014