Wahlenbergia pygmaea subsp. drucei
Mountain harebell, Egmont harebell
Wahlenbergia pygmaea Colenso subsp pygmaea
Vascular – Native
Herbs - Dicotyledons other than Composites
2n = 36
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.
2009 | At Risk – Naturally Uncommon
Previous conservation status
2004 | Range Restricted
Mount Egmont, Taranaki
Montane to alpine. Inhabiting semi-consolidated volcanic grit, where it is usually a pioneer at the foot of a scree or similar bare eroded site. Also colonising white lichen beds (Stereocaulon ramulosum) at lower altitudes on consolidated gravel along the Stony River
Perennial rhizomatous herb with rosulate tufts of leaves at ground level. Leaves bright green, glossy, glabrous or with a few scattered hairs, petiolate; lamina orbicular-spathulate, 10 × 3 to 20 × 5 mm. Leaf margin crenate-serrate, often undulate, teeth conspicuous. Flowers usually insect-pollinated, some forms self-fertile; erect or nodding on short upright scapes, 40-100 mm tall, which may be naked or 1-2-bracted. Corolla pale blue with creamy-white central band in each petal; up to 30 mm diameter, up to 18 mm long, broadly campanulate with tube as broad as or broader than long, lobes c.9 × 7 mm, spreading, broadly elliptic-lanceolate, acute. Calyx lobes c.3.0 × 1.5 mm, glabrous, narrow-triangular. Capsule c.10 × 6 mm, glabrous, domed cylindrical to plump barrel-shaped. Seeds ellipsoid, glossy brown.
Differs from subsp. pygmaea by its restriction of Mt Taranaki; by its spathulate leaves which are conspicuously toothed along the margins; and by the flowers which are pale blue with a creamy-white central band in each petal.
December - February
Easily grown from tip cuttings and the division of whole plants. Fresh seed germinates readily.
A Naturally Uncommon range-restricted endemic that is abundant within the montane to alpine areas of Mt Taranaki. There are no known threats.
wahlenbergia: Named in honour of Wahlenberg, a Swedish botanist and author of A Botany of Lapland.
drucei: After A.P. Druce, one of New Zealand’s most respected field botanists
Where To Buy
Not Commercially Available
Fact Sheet Prepared by P.J. de Lange 12 June 2007. Description adapted from Petterson (1997).
References and further reading
Petterson, J.A. 1997: Revision of the genus Wahlenbergia (Campanulaceae) in New Zealand. New Zealand Journal of Botanv 35: 9-54.
Please cite as: de Lange, P.J. (Year at time of access): Wahlenbergia pygmaea subsp. drucei Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/wahlenbergia-pygmaea-subsp-drucei/ (Date website was queried)