Striped Sun Orchid, Beautiful Sun Orchid
Thelymitra concinna Col., Thelymitra fimbriata Col., Thelymitra pachyphylla Cheeseman, Thelymitra caesia Petrie
Vascular – Native
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.
2n = 66
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
Endemic. North, South, Stewart and Chatham Islands.
Widespread from coastal to montane areas (up to 800 m a.s.l.). Preferring open shrubland, clay plans and gumland vegetation, often in wetlands. Sometimes under mature kauri (Agathis australis (D.Don.) Lindl.) or along ridge lines in mature forest.
Terrestrial, tuberous, glabrous, spring to summer-green perennial herb; found as solitary plants or growing in colonies of 4-many plants arising through vegetative extension. Plants at flower up to 800 mm tall. Stem robust, fleshy, erect, 2.5-4.8 mm diameter, yellow green to dark green (sometimes almost glaucous green). Leaf firmly fleshy to subcoriaceous, rather thick, erect to suberect, 80-240 x 6-20 mm, yellow-green, dark green to reddish green, channelled, deeply keeled and v-shaped in cross section. Bracts, 2-4, foliaceous, closely sheathing, broadly to narrowly lanceolate, of similar colour to stems and leaves. Inflorescence a (1-)6-14-flowered raceme. Flower 10-18 mm diameter, segments usually blue or pink, rarely white, petals usually prominently striped with dark blue, sepals less markedly so; sometimes segments pink or blue without stripes. Sepals and petals similar, broadly ovate, lateral sepals slight narrower than the rest. Labellum slightly obovate. Column erect 6-8 mm tall, dark blue, pink, mauve, or white; post-anther lobe variable, mostly shorter than or equal to anther height, rarely taller; margins variable, usually thickened, sometimes slightly to prominently incurved, or irregularly denticulate and often tuberculate; usually dark orange, red-brown or red in the upper portion with the distal margins usually yellow; column-arms usually higher than anther, flat, red-brown to red, variably ornamented within a single raceme or population; most commonly with the margins thinly membranous, basally coloured red, toothed or lobed (anteriorly, posteriorly or both), the upper teeth grading into branched fimbriae, these extending to the top of the arm, or plain without ornamentation, or plain grading into teeth, or plain grading into fimbriae; teeth and fimbriae red, orange, yellow or in gradations between these.
The prominently keeled, erect to suberect, rather thick and fleshy leaves are distinctive, while the usually striped flowers and rather variable, though usually reddish column arms of varying ornamentation are diagnostic of this species. It is most likely to be confused with T. cyanea (Lindl.) Benth. which differs by the absence of a post-anther lobe, and by its consistently ribbon-like, more or less spirally twisted, yellow column arms. It could also be confused with T. xdentata L.B.Moore a sterile hybrid which differs by the less brightly-coloured, inconspicuous column-arm teeth that extend down the from margin of the column-arm wing; and yellow cilia held in globose masses.
October - January
December - April
Very easily grown in a sunny, well drained site. Often naturalises in gardens within urban areas abutting indigenous vegetation in northern New Zealand. Although easily cultivated, like all orchids it should not be removed from the wild.
thelymitra: Woman’s hat
pulchella: Pretty little thing
Where To Buy
Not commercially available.
Notes on taxonomy
An extremely variable plant that evolved through hybridisation with Thelymitra cyanea and T. longifolia J.R.Forst. et G.Forst. Both parents account for the wide variation in flower colour, column and column-arm shape, colour and ornamentation.
Description adapted from Moore and Edgar (1970).
References and further reading
Moore, L.B.; Edgar, E. 1970: Flora of New Zealand. Vol. II. Government Printer, Wellington.