Myosotis pygmaea var. minutiflora G.Simpson et J.S.Thomson
Vascular – Native
Herbs - Dicotyledons other than Composites
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.
Current conservation status
The threat classification 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) – more information about this can be found on the NZTCS website 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. Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – a suggested threat classification status has not been assessed by the NZTCS panel.
2017 | Threatened – Nationally Vulnerable | Qualifiers: EF, Sp
Previous conservation statuses
2012 | Threatened – Nationally Vulnerable | Qualifiers: EF, RR, Sp
2009 | Threatened – Nationally Endangered | Qualifiers: DP, EF
2004 | Threatened – Nationally Vulnerable
Endemic. North and South Islands. In the North Island known from East Cape, the South Taranaki Coast, Kapiti Island, along the South Wellington Coast, and at Cape Palliser. In the South Island, locally present in Marlborough, Canterbury, and Central Otago.
Coastal to alpine, in open and more or less shingly places.
Decumbent, annual or rarely short-lived perennial herb, forming small circular patches on open ground. Rosette rather compact, densely to sparsely leafy. Petiole narrow or broad, 3-5 mm long. Leaves 8-25 x 4-10 mm, green, dark green, bronze-green to brown-green, obovate to spathulate or clavate, apex obtuse, rounded, base often oblique, otherwise attenuate, upper leaf surface with copious, stiff to coarse, spreading, straight hairs, undersides glabrescent or glabrous. Lateral branches numerous, decumbent, 10-30(-60) mm long, usually hidden within, though sometimes extending beyond rosette leaves. Stem leaves similar to rosette leaves, shortly petiolate. Bracts sessile, 5-7 x 1-4 mm, narrow oblong, obovate to spathulate, base oblique, subopposite to opposite, overlapping. Inflorescences cymose, cymes simple, few- to many-flowered, subtended by leafy bracts throughout, internodes 2-3(-6) mm long. Calyx 2-3 mm long, elongating to 3-5 mm in fruit, lobes deeply cut to half calyx length, subacute to acute, spreading at fruiting, copiously covered in shortly erect, spreading silky hairs. Flowers subsessile to sessile, white, cream, pale yellow, sometimes striped with blue. Corolla 0.5-1 mm diameter, corolla tube narrowly cylindric, 1-2 mm long, lobes obtuse to subacute; stamens on short filaments, anthers 0.1-0.2 mm, wholly included within corolla tube, anther tips obscured, rarely reaching scales; style 0.1-0.3, stigma capitate. Nutlets 0.9-1.1 x 0.6-0.8 mm, brown-black to grey-black, ovate to ovate-elliptic, distinctly keeled on ventral surface
Myosotis brevis is most similar to M. pygmaea which is the only one of the M. pygmaea complex (comprising M. brevis, M. drucei, M. glauca and M. pygmaea) with which M. brevis has been found growing sympatrically. From M. pygmaea, M. brevis is best distinguished by its annual habit, much smaller flowers, 0.5-1 mm in M. brevis, 1.5-3 mm in M. pygmaea.
September to April
October to August
Usually a strict annual which in good conditions self sows readily. Easily grown from fresh seed but can be difficult to maintain and dislikes humid conditions.
A plant of free-draining but seasonally moist habitats. It cannot tolerate over-shading, so is very vulnerable to taller weed species invading its habitats. Land development is threatening some populations, and has possibly been responsible for the recent loss of others.
Where To Buy
Not commercially available
Notes on taxonomy
Myosotis brevis is a new name and rank for the plant previously treated as M. pygmaea var. minutiflora. A new name at species rank was required for that variety because of the prior existence of another unrelated overseas species M. minutiflora. Myosotis brevis was formalised by de Lange and Barkla in de Lange et al. (2010).
Fact Sheet prepared for the NZPCN by P.J. de Lange (14 April 2006). Description by P.J. de Lange and subsequently published in de Lange et al. (2010).
References and further reading
de Lange, P.J.; Heenan, P.B.; Norton, D.A.; Rolfe, J.R.; Sawyer, J.W.D. 2010: Threatened Plants of New Zealand. Canterbury University Press, Christchurch.
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Myosotis brevis Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/myosotis-brevis/ (Date website was queried)