Lachnagrostis billardierei subsp. tenuiseta


Lachnagrostis: From "lachne" (wool) referring to the distinctive callus hairs of this genus and "agrostis" by which Trinius (1820) actually meant "a grass" (not an Agrostis). So the generic name means "a hairy (woolly) grass" not "a hairy (woolly) Agrostis" as is often incorrectly stated (see Gardner 2014).
billardierei: Named after Jacques Houttou de Labillardiere (1755-1834), 19th century French botanist who described several New Zealand plants

Common Name(s)

wind grass

Current Conservation Status

2012 - Data Deficient

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


2012 - SO
2009 - SO


Lachnagrostis billardierei subsp. tenuiseta (D.Morris) S.W.L.Jacobs



Flora Category

Vascular - Native

Structural Class



Indigenous. New Zealand: North Island (Northland and Auckland).


In New Zealand this grass has been gathered from coastal cliff faces and sandy beaches and associated dune systems. However, as it is only recently recognised for New Zealand (Brown 2012) its exact habitat preferences remain to be ascertained.


Lachnagrostis billardierei subsp. tenuiseta has yet to be formally listed by the New Zealand Indigenous Vascular Plant Panel which meets during May 2012. However, available data suggests that this grass will probably be listed as "Data Deifcient" qualified SO [Secure Overseas] until such time as other New Zealand herbarium holdings of L. billardierei s.l. have been examined.

Chromosome No.

2n = 56

Endemic Taxon


Endemic Genus


Endemic Family



Lachnagrostis billardierei subsp. tenuiseta as common eastern Australian ocastal grass has only just been recognised from New Zealand based on three gatherings examined from only one New Zealand Herbarium (Austin 2012). Therefore this subspecies is potentially more widespread as it is very easily confused with L. billardierei subsp. billardierei.



Fact Sheet Prepared for NZPCN by P.J. de Lange (2 May2012).

References and further reading

Brown, J.A. 2012: Illustration, distribution and cultivation of Lachnagrostis robustaL. billardierei and L. punicea (Poaceae). Muelleria 30: 72-80.

Gardner, R.O. 2014: Notes on the wind grass Lachnagrostis filiformis (Poaceae). Auckland Botanical Society Journal 69: 168-170.

Trinius, C.B. 1820: Fundamenta Agrostographiae. J.G.Huebner, Vienna.

This page last updated on 9 Dec 2014