Current Conservation Status
2012 - At Risk - Declining
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 - At Risk - Declining
2004 - Data Deficient
2012 - DP
2009 - DP
Connorochloa tenuis (Buchanan) Barkworth, S.W.L.Jacobs, et H.Q.Zhang
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.
Agropyron scabrum var. tenue Buchanan, A. tenue (Buchanan) Connor; Elymus tenuis (Buchanan) Á.Löve et Connor
Endemic. In the North Island known from the Volcanic Plateau and Ruahine Range. In the South Island known from North-West Nelson, Marlborough and east of main divide.
A species of open short tussock (Festuca) dominated grassland from sea-level to 900 m.
Prostrate, bronze-leaved grass. Upper culm (stem) internode greatly elongating after flowering and trailing along ground. Leaf-sheath 5-7 cm, hairless. Ligule 0.25-0.3 mm, very finely hairy. Leaf-blade 10-15 cm × 2 mm, bronzed, flat, sometimes rolled, smooth. hairless, ribbed, undersides with small prickle-teeth. Culm to 2 m or more, slender, trailing along ground, upper internode elongating after flowering, sometimes up to 1.5 m. Inflorescence wheat-like 10-15 cm, containing up to 15 spikelets. Awn 15-35 mm. Seed 4.5-5 mm. Description adapted from Edgar & Connor (2000).
Connorochloa tenuis can be distinguished from all other indigenous Elymoid grasses by the easily detached culm trailing the ground, by the uppermost internode greatly elongating following flowering, by the spikelets being appressed to the inflorescence stem, and by the anthers 2-3 mm long, coloured uniformly yellow. Connorochlora it is morphologically most similar to some species of Anthosachne, differing from them in being octoploid and its combination of basal leaves that are 1–1.5(-2.0) mm wide, upper glumes that have 1.3–6.5 mm long awns, and straight lemma awns (9-)15(–35) mm long. Connorochloa is a new, monotypic genus established by Barkworth et al. (2011).
No information available
No information available
Easily grown from divisions of whole plants and from fresh seed.
As large parts of its former range have become increasingly overwhelmed by introduced pasture grasses, observations suggest that Connorochloa has declined. However, there have been no serious attempts to quantify this decline making an accurate conservation assessment impractical. This species should probably be assessed as Data Deficient.
2n = 56
Life Cycle and Dispersal
Florets are dispersed by wind and attachment (Thorsen et al., 2009).
Where To Buy
Not commercially available.
Fact sheet prepared for NZPCN by P.J. de Lange May 2004. Description adapted from Edgar & Connor (2000).
References and further reading
Barkworth, M.E.; Jacobs, S.W.L. 2011: The Triticeae (Gramineae) in Australasia. Telopea 13: 37-56.
Edgar, E.; Connor, H.E. 2000: Flora of New Zealand. Vol. V. Lincoln, Manaaki Whenua Press.
Thorsen, M. J.; Dickinson, K. J. M.; Seddon, P. J. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics 11: 285-309
This page last updated on 29 Jul 2016