Journal Number 92
September 2004
ORIGINAL PAPERS
Threatened & Uncommon Orchids of New Zealand
From PJ de Lange et al (Threatened and un-common plants of NZ. NZ Journal of Botany 2004; 42: 45-76),
who presented a reappraisal of the conservation status of the indigenous New Zealand vascular plant flora,
using the classification below.
Appendix 1 lists New Zealand threatened and uncommon vascular plants,
and Appendix 2 lists taxonomically
indeterminate plants (cf. de Lange et al. 1991).
QUALIFIERS : EW Extinct in the wild - CD Conservation dependent - DP Data poor - RC Recovering
ST Stable - SO Secure overseas - TO Threatened overseas - HI Human induced - RF Recruitment failure - EF Extreme fluctuations - OL One location - PD Partial decline - IE Island endemic.
* denotes indigenous taxa found naturally outside New Zealand
+ denotes an addition
to this list
ORCHIDS LISTED IN APPENDIX 1 AND 2:
EXTINCT
No NZ orchid is regarded as extinct.
ACUTELY THREATENED
1. Nationally critical (7)
Anzybas carsei CD, HI, RF, EF, OL
Linguella puberula HI, EF
Pterostylis micromega CD, HI, EF
Thelymitra sanscilia DP,EF
Calochilus aff. herbaceus SO, EF
+Microtis aff. unifolia DP, OL
Thelymitra "Ahipara" CD. DP, HR, EF
2. Nationally endangered (0)
3. Nationally vulnerable (1)
Prasophyllum aff. patens CD, DP
CHRONICALLY THREATENED
1. Serious decline (3)
Drymoanthus flavus
*Plumatachilos tasmanicum SO, HI, EF
Pterostylis paludosa EF
2. Gradual decline (0)
AT RISK
1. Sparse (14)
Adelopetalum tuberculatum
Anzybas rotundifolius
*Calochilus paludosus SO, EF
*Calochilus robertsonii SO, EF
*+Corunastylis nuda SO, EF
*+Corunastylis pumila SO, EF
+Hymenochilus tanypodus EF
+Hymenochilus tristis HI,EF
Pterostylis cernua EF
Stegostyla atradenia
+Thelymitra formosa DIP, EF
Thelymitra tholiformis EF
Townsonia deflexa
+Thelymitra aff. ixioides DP, SO, EF
2. Range restricted (4)
*+Petalochilus alatus DP, TO
+Pterostylis silvicultrix IE
+Thelymitra "darkie" EF
+Thelymitra "rough leaf' EF
NON-RESIDENT NATIVE
1. Vagrant (4)
*+Chiloglottis trapeziformis
*Simpliglottis valida SO
*Paracaleana minor SO
*Pterostylis nutans SO
2. Coloniser (4)
*Cryptostylis subulata SO
*Diplodium alveatum SO
*Thelymitra malvina SO
*Thelymitra matthewsii TO
DATA DEFICIENT (14)
Nematoceras rivularis
+Pterostylis auriculata
Pterostylis irwinii
Pterostylis porrecta
+Nematoceras aff. rivularis "rest area"
+N. aff. rivularis "whiskers"
+N. aff. rivularis "Kaimai"
+N. aff. rivularis "Kaitarakihi OL
+N. aff. trilobus "pygmy"
+N. aff. trilobus "Rimutaka"
+N. aff. trilobus "Trotters"
+Pterostylis aff. graminea "sphagnum"
Spiranthes aff. novae-zeelandiae "Motutangi" HI. EF
+Thelymitra aff. longifolia "Whakapapa"
Appendix 3 lists plants previously listed but no longer considered to be threatened.
It contains no orchids.
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