The New Zealand Plant Conservation Network

Species

Ourisia crosbyi

Etymology

Ourisia: after Ouris, governor of the Falkland Islands
crosbyi: after Crosby-Smith

Common Name(s)

Crosbys Mountain Foxglove

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 - Not Threatened
2004 - Not Threatened

Authority

Ourisia crosbyi Cockayne

Family

Plantaginaceae

Flora Category

Vascular - Native

NVS Species Code

OURCRO

Structural Class

Dicotyledonous Herbs other than Composites

Synonyms

Ourisia macphersonii Cockayne et Allan

Distribution

Endemic. South Island where mainly in the south-west from Westland through Fiordland to Southland. Also on Stewart Island

Habitat

Coastal to montane (up to 1050 m a.s.l.) in favouring well-lit areas on the forest floor; or along steam sides, near waterfalls and on rock slides. In the South Island mainly in beech (Nothofagus Blume) forest.

Features

Perennial herb 132-490 mm tall, with erect leaves and inflorescences; stems 2.4-11.0 mm diameter, internodes 8.5-12.0 mm long, often obscured by leaves, mostly glabrous. Leaves opposite, along creeping stems, densely packed near growing tip; petiole 5.0-145.0 x 0.6-1.4 mm, sparsely or densely eglandular pilose or villous especially along margins; lamina 14.2-116.0 x 7.8-65.0 mm, narrowly ovate, ovate to broadly ovate, apex acute to subacute, base truncate, rarely cuneate or cordate, margin serrate or serrate-crenate, leaf surfaces, sparsely or densely eglandular pilose near apex (on undersides especially on veins). Inflorescence racemose, 1-40-flowered, 142-490 mm long, bracteate, with 3-6 flowering nodes, 2-12 bracts and 1-12 flowers per node; peduncle 1.2-5.9 mm diameter, densely eglandular pilose. Floral bracts up to 13.6-45.1 x 4.0-32.0 mm, sessile sometimes clasping peduncle, lanceolate, narrowly ovate to ovate, margins serrate, upper bracts with further teeth or subentire, eglandular pilose, sometimes only on margins or veins of undersides. Flowers 10.5-20.4 x 8.0-17.0 mm; pedicel 6.3-48.6 mm long, densely eglandular pilose. Calyx 4.2-7.8 x 4.2-9.3 mm, regular, externally and marginally eglandular pubescent, internally mostly glabrous, calyx lobes 4.3-8.1 x 0.6-1.6 mm, posterior all equally divided to base, narrowly lanceolate to lanceolate, apex acute or rounded, prominently 3-veined. Corolla 14.5-19.9 x 14.9-19.5 mm when flattened, bilabiate, tubular-funnelform, white, externally glabrous; tube 4.3-10.7 x 4.1-5.9 mm at apex, 2.4-3.8 mm wide at base, not constricted near base, slightly curved or straight, yellow inside; anterior corolla lobes 6.5-9.9 x 4.7-7.2 at widest point, 2.5-3.3 mm wide at base, posterior corolla lobes 4.3-7.5 x 4.4-7.9 mm wide at widest point, 2.6-2.9 mm wide at base, widely spreading, obcordate or obovate-spathulate, apex emarginate or not. Stamens 4, didynamous; comprising two long stamens 6.7-9.4 mm long, reaching tube opening, and two short stamens 4.5-7.0 mm long; anthers 0.5-1.0 x 0.6-1.2 mm, reniform to horseshoe-shaped; staminode if present c.0.6-0.9 mm long, inserted c.0.3-0.5 mm above base of corolla. Style 4.3-5.4 mm long, straight or angled from base, exserted or flush with tube opening; stigma 0.6-1.1 mm diameter, emarginate; ovary 2.6-3.9 x 1.3-2.3 mm, glabrous. Capsules 4.0-8.2 x 3.0-5.9 mm, glabrous, dehiscence loculicidal. Seeds 0.5-0.9 x 0.2-0.6 mm.

Similar Taxa

Close to the Ourisia macrophylla Hook complex from which O. crosbyi differs by the serrated to serrate-crenate rather than crenate to crenate-serrate leaf and bracts, externally glabrous rather than hairy flowers, and densely, long eglandular, rather than densely short, glandular hairy pedicels.

Flowering

December - February

Flower Colours

White

Fruiting

December - March

Propagation Technique

Difficult - should not be removed from the wild

Threats

Not Threatened

Chromosome No.

2n = 48

Endemic Taxon

Yes

Endemic Genus

No

Endemic Family

No

This page last updated on 3 Jan 2014