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  4. Euphrasia zelandica

Euphrasia zelandica

Lauder.<br>Photographer: Mike Thorsen, Licence: All rights reserved. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Reporoa Bog, NW Ruahine Range.<br>Photographer: Colin C. Ogle, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>. <a class='member-message' href='/nzpcn/why-join-nzpcn/' target='_blank'>Members can view a larger version of this image.</a>
Kaimanawa range, February.<br>Photographer: John Smith-Dodsworth, Licence: <a target='_blank' href='https://creativecommons.org/licenses/by-nc/4.0'>CC BY-NC</a>.
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Common name

eyebright

Family

Orobanchaceae

Authority

Euphrasia zelandica Wettst.

Flora category

Vascular – Native

Endemic taxon

Yes

Endemic genus

No

Endemic family

No

Structural class

Herbs - Dicotyledons other than Composites

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.

EUPZEL

Current conservation status

  • Conservation status of New Zealand indigenous vascular plants, 2017

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

Distribution

Endemic. North to South Islands from Mount Hikurangi southwards.

Habitat

Montane to subalpine boggy to dry open places

Features

Small, succulent-like annual herb 20-100 mm tall, simple, or branched from base, sometimes minute and flowering when less than 10 mm tall; branches ascending, bifariously white-pubescent, occasionally with short glandular hairs towards tips. Leaves sessile, usually rather distant in lower parts of branches and crowded towards tips, sometimes forming small rosette, approximately 4-9 x 2-6 mm, ovate to suborbicular or flabellate with 2-5 pairs of narrow acute teeth, cuneately narrowed to base, margins thickened and revolute, upper surface clad in short flattened white hairs sometimes mixed with short glandular hairs, occasionally nearly glabrous, lower surface glabrous or sparsely hairy. Flowers, clustered at tips of branches, subsessile or on pedicels up to 4 mm long, sometimes pedicels longer, especially in fruit. Calyx (4)-5-(6) mm long, sometimes much enlarged in fruit, pubescent as leaves, divided 1/3 to nearly 1/2 way; lobes acute, margins and midveins thickened and reddish. Corolla white, 6-10-(12) mm long; tube narrow, slightly to much longer than calyx; lobes of lower lip 1-2 mm wide, entire, obtuse to subacute. Anthers yellow to golden brown, margins glabrous or nearly so, awns slender, approximately equal. Capsule greater than or approximately equal to calyx, 4-8 x 3-5 mm, obovate, setose at apex; seeds numerous, 1-1.5 mm long.

Similar taxa

Similar in appearance to Euphrasia australis which is generally larger in stature than E. zelandica, up to 200 mm high compared to 100 mm, having a stouter appearance. The flower pedicels are shorter on E. zelandica, up to 4 mm, compared to up to 10 mm in E. australis. E. australis has longer sparse glandular hairs compared to, generally many shorter white hairs on E. zelandica. E. australis has a limited range being restricted to West Otago and Fiordland, E. zelandica has a greater distribution range.

Flowering

October - April

Flower colours

White, Yellow

Fruiting

February - April

Life cycle

Seeds is dispersed by wind and possibly water and ballistic projection (Thorsen et al., 2009).

Etymology

euphrasia: Eye-medicine

TAXONOMIC NOTES

Allan (1961) notes, although extreme forms appear very distinct in E. zelandica and E. australis the two species are not always satisfactorily separable; the size differences may be largely epharmonic, and elongated plants with pedicels shorter than leaves sometimes have the pubescence of E. zelandica.

Crossing appears to occur quite freely between E. cockayneana and E. zelandica where they occur together, e.g. at Arthur Pass, where plants combining characters of both species sometimes out-number pure individuals of E. zelandica. The putative hybrids are intermediate in habit with white to cream corollas of intermediate size and a mingling of the characteristic leaf-pubescence of both species. Even plants superficially closely resembling E. zelandica may have the stiff appressed scabridity of E. cockayneana on the leaf-margins.

Attribution

Fact sheet prepared for NZPCN by M.D. Ward 2 (November 2020) Description adapted from Allan (1961).

References and further reading

Allan, H. H. 1961. Flora of New Zealand. Volume 1. Wellington: Government Printer. Pages 856-857.

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: Ward, M.D. (Year at time of access): Euphrasia zelandica Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/euphrasia-zelandica/ (Date website was queried)

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