taxonID	type	description	language	source
E056827B996DFFF6FF59F911CC4EF86C.taxon	materials_examined	Type: — NEW ZEALAND. South Island: north-west Nelson, Kahurangi National Park, Salisbury Lodge, along the Potholes track, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104126 (holotype: WELT).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996DFFF6FF59F911CC4EF86C.taxon	diagnosis	Diagnosis: — C. confusus resembles C. obscurus in the dark maroon colour of the labellum but differs by its dark to light green dorsal sepal with obtuse to slightly retuse apex that extends beyond the labellum. It differs from C. trilobus by its widely ovate to cordiform, distinctly mucronate leaf and dark maroon labellum.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996DFFF6FF59F911CC4EF86C.taxon	description	Terrestrial herbs, 12 – 30 mm tall at flowering. Leaf distinctly petiolate, petiole (2.8) 7.5 – 12.5 (31.4) mm long; lamina cordiform to widely ovate, (9.7) 10.8 – 14.1 (19.0) × (10.8) 13.5 – 17.4 (21.3) mm; margin entire; apex mucronate with mucro (0.1) 0.8 – 1.5 (2.2) mm long. Flower solitary, held erect on a peduncle (0.6) 2.8 – 4.3 (7.8) mm long; floral bract triangular to widely deltoid when flattened, (1) 2.6 – 3.9 (6.6) × (1.3) 1.7 – 2.4 (3) mm; dorsal sepal dark or light green, with red-maroon streaks and blotches towards the apex, arching over the labellum, concave to cucullate, narrow at the base and spathulate towards the tip, apex obtuse or slightly retuse; lateral sepals linear-filiform, whitish or red to maroon, (13.1) 19.0 – 27.0 (46.1) mm long; petals similar to the lateral sepals but longer, (27.0) 36.9 – 49.7 (75.0) mm long; labellum dark red to maroon with a pale green to yellowish centre, auriculate at base, aperture (0.8) 1.8 – 2.3 (3.0) mm in diameter; lamina deflexed, ca. 7 – 10 mm wide, with a central groove formed by an inwards folding of the lamina, extending downwards almost to the lower margin and sunken pit formed at the point where the lamina bends, upper margin incurving, mostly entire but finely erose or lacinate towards the lower margin, apex notched, inner surface covered with small hairs. Ovary (3.0) 4.3 – 6.0 (7.6) mm long. Column 2.1 mm long, straight, with truncate to emarginate wings at either side of the stigma.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996DFFF6FF59F911CC4EF86C.taxon	materials_examined	Specimens examined: — NORTH ISLAND: Tongariro National Park, Whakapapa, sites along Whakapapanui stream, 16 October 2012, McGlynn SP 104176 (WELT); Tongariro National Park, Whakapapa, sample sites along Whakapapanui stream, 22 October 2011, McGlynn SP 104402 (WELT); Egmont / Taranaki National Park, Stratford plateau, 30 October 2012, McGlynn SP 104180 (WELT); Egmont National Park, Dawson falls, on Ridge track to Wilkies pools / Waingongoro hut, 30 October 2012, McGlynn SP 104403 (WELT). SOUTH ISLAND: Kahurangi National Park, at the intersection of Gordons Pyramid route and Potholes track, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104397 (WELT). Kahurangi National Park, along Gordons Pyramid route, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104398 (WELT); Kahurangi National Park, along Potholes track, close to Sphinx Valley cave, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104399 (WELT); Arthur‘s Pass National Park, at the end of Otira Valley track, 12 December 2011, Lehnebach & Zeller SP 104143 (WELT); Arthur‘s Pass National Park, Kellys Creek, Carrol‘s hut track, 11 December 2011, Lehnebach & Zeller SP 104400 (WELT); Arthur‘s Pass National Park, Otira Valley, 12 December 2011, Lehnebach & Zeller SP 104401 (WELT).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996DFFF6FF59F911CC4EF86C.taxon	distribution	Distribution: — Endemic to NZ, both North and South Islands (Fig. 6 D). It may also be present in the Chatham Islands, but further study of fresh fertile material is needed to confirm its presence there.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996DFFF6FF59F911CC4EF86C.taxon	biology_ecology	Habitat: — Found in leaf litter under southern beech [Fuscospora Heenan & Smissen (R. S. Hill & J. Read) (2013: 12 – 13) or Lophozonia Turczaninow (1858: 396), Nothofagaceae] forest, scrub or tussock in subalpine habitats, damp mossy subalpine open areas, 1000 – 1100 m. Phenology: — Flowering October to early December; fruiting November to January.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996DFFF6FF59F911CC4EF86C.taxon	etymology	Etymology: — The epithet confusus is a reference to the similarity between the flowers of C. confusus and C. obscurus and leaf shape to those of C. macranthus and C. orbiculatus.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996DFFF6FF59F911CC4EF86C.taxon	biology_ecology	Conservation status: — Corybas confusus is common in montane, sub-alpine and alpine areas of the North and South Islands. It is, therefore, regarded as ‘ Not Threatened’ using the criteria of Townsend et al. (2008).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996FFFF5FF59FF7BCAB1F7CF.taxon	materials_examined	Type: — NEW ZEALAND. South Island: Nelson Lakes National Park, Lake Rotoiti, along Lakeside track, near Whisky falls, 25 November 2011, Lehnebach & Zeller SP 104133 (holotype: WELT!).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996FFFF5FF59FF7BCAB1F7CF.taxon	diagnosis	Diagnosis: — Similar to C. confusus in lip colour but differs by its short dorsal sepal firmly appressed against the upper margins of the labellum and reniform to cordiform leaf. It differs from C. trilobus by the overall non-transparent, dark maroon to black flower.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996FFFF5FF59FF7BCAB1F7CF.taxon	description	Terrestrial herbs, 14 – 30 mm tall at flowering. Leaf distinctly petiolate, petiole (5.1) 14.2 – 23.1 (40.8) mm long; lamina reniform to cordiform, (5.8) 10.9 – 13.4 (18.2) × (9.6) 16 – 21.5 (26.7) mm; margin entire; apex mucronate with mucro (1.1) 15 – 2.2 (2.5) mm long. Flower solitary, held erect on a peduncle (2.0) 3.6 – 5.3 (7.8) mm long, floral bract triangular to sub-triangular when flattened, (2.3) 3.6 – 5.8 (7.7) × (1.5) 2.1 – 2.6 (4.0) mm; dorsal sepal dark red to dark maroon to black, arching over the labellum, concave to cucullate, narrow at the base and widely spathulate towards the tip, apex retuse to emarginated; lateral sepal linear-filiform, crimson to dark red, (11.7) 16.1 – 18.0 (20.6) mm long; petals similar to the lateral sepals but longer, (27.3) 35.7 – 43.6 (57.2) mm long; labellum mostly dark crimson to almost black with a pale green centre, auriculate at base, aperture (1.6) 1.7 – 2.1 (2.4) mm in diameter; lamina deflexed, ca. 10 mm wide, with a central groove formed by the inwards folding of the lamina, extending downwards almost to the lower margin and sunken pit formed at the point where the lamina bends, margin incurving, mostly entire but erose at the lower edge, inner surface of the labellum covered glandular trichomes. Ovary (3.0) 4.6 – 7.0 (8.4) mm long. Column 1.6 mm long, curved, retuse column wings at either sides of the stigma.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996FFFF5FF59FF7BCAB1F7CF.taxon	materials_examined	Specimens examined: — SOUTH ISLAND: Nelson Lakes National Park, Cascade track. 26 November 2011, Lehnebach & Zeller SP 104134 (WELT); Nelson Lakes National Park, St Arnaud Range track, 27 November 2011, Lehnebach & Zeller SP 10413527 (WELT); Nelson Lakes National Park, Mt Robert road, 9 November 2012, Lehnebach, Moorhouse & Upson SP 104152 (WELT); Nelson Lakes National Park, Lake Rotoiti, Lakeside track from Mt Robert road to Coldwater hut, near Whiskey falls, 25 November 2011, Lehnebach & Zeller SP 104404 (WELT); Nelson Lakes National Park, Lake Rotoiti, Lakeside track from Mt Robert road to Coldwater hut, 25 November 2011, Lehnebach & Zeller SP 104405 (WELT).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996FFFF5FF59FF7BCAB1F7CF.taxon	etymology	Etymology: — A reference to the dark colour of the flower.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996FFFF5FF59FF7BCAB1F7CF.taxon	distribution	Distribution: — Endemic to NZ. Only known from Nelson Lakes National Park in the South Island and nearby forested areas (Fig. 7 D).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996FFFF5FF59FF7BCAB1F7CF.taxon	biology_ecology	Habita t: — Found in leaf litter under southern beech forest (Fuscospora or Lophozonia, Nothofagaceae] or Myrtaceae scrub, 600 – 1000 m. Phenology: — Flowering October to early November; fruiting September to December. Conservation status: — This species is common within the limits of Nelson Lakes National Park and nearby forested areas. According to Scanlen & St. George (2011) it also occurs in a few sites of the upper South Island, but we were not able to find any photographic or voucher material to confirm whether these sightings correspond to C. obscurus. Based on our field observations and following the New Zealand Threat Classification System (Townsend et al. 2008), we suggest C. obscurus should be ranked as Naturally Uncommon.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF4FF59FF7BCD0AF89C.taxon	materials_examined	Type: — NEW ZEALAND. North Island, Hunua Regional Park, Wairoa Loop track, 10 August 2012, Lehnebach & Zeller SP 104149 (holotype: WELT!).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF4FF59FF7BCD0AF89C.taxon	diagnosis	Diagnosis: — Similar to C. hypogaeus in flower and leaf shape but it can be distinguished by its straight ovary, labellum with a white centre and dorsal sepal extending beyond the labellum. It differs from C. trilobus by its long dorsal sepal and the white centre of the labellum.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF4FF59FF7BCD0AF89C.taxon	description	Terrestrial herbs, 14 – 20 mm tall at flowering. Leaf distinctly petiolate, petiole (9.0) – 9.8 – 12.7 – (22.6) mm long; lamina reniform to cordiform, (8.5) 10.0 – 13.2 (13.8) × (12.6) 14.0 – 19.0 (20.3) mm; margin entire; apex acuminate (1.5) 2.1 – 2.7 (3.3) mm long. Flower solitary, held erect on a peduncle (2.5) 3.3 – 3.9 (4.4) mm long; floral bract ovate when flattened, (3.7) 4.4 – 5.8 (7.6) × (2.0) 2.1 – 2.5 (2.7) mm; dorsal sepal light green with a few blotches of dark red, arching over the labellum, concave to cucullate, narrow at the base and wide towards the tip, apex rounded or slightly mucronate; lateral sepals linear-filiform, white or translucent with dark red specks, (11.8) 15.0 – 18.0 (19.8) mm long; petals similar to the lateral sepals but longer, (32.8) 38.9 – 47 (53.3) mm long; labellum white in the centre, dark red towards the margins, and covered with short trichomes, auriculate at base; aperture (1.5) 1.7 – 2.0 (2.1) mm diameter; lamina deflexed, ca. 5 mm wide, with a central groove formed by the inward folding of the lamina, extending downwards half way the lamina and sunken pit formed at the point where the lamina bends, lateral margins incurve, mostly entire, lower margin laciniate to finally denticulate. Ovary (3.3) – 4.0 – 4.4 – (5.3) mm long. Column 1.8 mm long, straight, with truncate column wings on both sides of the stigma.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF4FF59FF7BCD0AF89C.taxon	materials_examined	Specimens examined: — NORTH ISLAND: Auckland, Hunua Regional Park, September 2012, Gaskett SP 104166 (WELT); Auckland, Hunua Regional Park, September 2012, Scanlen SP 104167 (WELT).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF4FF59FF7BCD0AF89C.taxon	etymology	Etymology: — This species is named in honour of Ian Saint George, who has greatly contributed to the knowledge of NZ orchids and promoted their study and conservation.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF4FF59FF7BCD0AF89C.taxon	distribution	Distribution: — Endemic to NZ, known only from the Hunua Ranges in the North Island (Fig. 8 D).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF4FF59FF7BCD0AF89C.taxon	biology_ecology	Habitat: — In leaf litter under scrub or podocarp-broadleaved forest, gravelly soil or decaying trunks of tree ferns, 140 – 330 m. Phenology: — Flowering mid-August to September; fruiting October to early November. Conservation status: — This species is only known from the type locality where a population of about hundred individuals occurs. Scanlen & St. George (2011) noted a second site existed in the 1960 s, but this has now been lost. Based on these observations, our field observations and following the New Zealand Threat Classification System (Townsend et al. 2008), C. sanctigeorgianus should be ranked as “ Nationally Critical ”.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF3FF59F864CC13F844.taxon	materials_examined	Type: — NEW ZEALAND. South Island: north-west Nelson, Kahurangi National Park, track to Gordon’s Pyramid from Salisbury Lodge, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104127 (holotype: WELT!).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF3FF59F864CC13F844.taxon	diagnosis	Diagnosis: — C. vitreus resembles C. wallii in the overall pale colour of its flower but differs by its translucent labellum lamina with a non- isometric, dark maroon to purple band along the lateral margin and straight translucent lower margin. It can be distinguished from C. trilobus by its broadly ovate flower in frontal view and emarginate to retuse dorsal sepal.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF3FF59F864CC13F844.taxon	description	Terrestrial herbs, 14 – 30 mm tall at flowering. Leaf distinctly petiolate, petiole (3.3) 6.8 – 13 (24.7) mm long; lamina cordiform, (3.3) 8.5 – 11.3 (14.1) × (7.8) 12.3 – 16.0 (19.6) mm; margin entire; apex mucronate with mucro (0.2) 1.4 – 2 (2.8) mm long. Flower solitary, held erect on a peduncle (0.7) 2.7 – 5.5 (8.1) mm long; floral bract triangular to widely deltoid when flattened, (1.8) 3 – 4 (6.8) × (1.3) 1.8 – 2.4 (3.2) mm; dorsal sepal pale green and less often with a few maroon streaks, concave to cucullate, arching over the labellum, narrow at the base and widely spathulate towards the tip, apex retuse to emarginated; lateral sepals linear-filiform, whitish to pale maroon, (12) 15.4 – 21.6 (26.7) mm long; petals are similar to the lateral sepals but longer, (21.3) 33 – 43.6 (56.5) mm long; labellum lamina mostly translucent, less often with a few streaks of maroon, covered with short trichomes, auriculate at base, aperture (1.2) 1.8 – 2 (2.6) mm in diameter; lamina deflexed, ca. 7 mm wide, with a central groove formed by the inwards folding of the lamina, extending downwards half way the labellum and sunken pit formed at the point where the lamina bends; lateral margin of the labellum incurving, entire, with a non-isometric dark maroon to purple band, lower margin translucent, straight and erose. Ovary (4.5) 5.3 – 7.1 (8.4) mm long. Column 1.8 mm long, straight, round wings flanking the stigma. Senescent flowers with apex of the dorsal sepal pressing against the labellum blocking access to the column.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF3FF59F864CC13F844.taxon	materials_examined	Specimens examined: — NORTH ISLAND: Boundary Stream Mainland Island, Kamahi loop track, 25 September 2012, Lusk SP 104186 (WELT); Eastern Ruahine Ranges, slopes opposite to Waipawa river, 26 September 2011, Lehnebach, Zeller & Lusk s / n, spirit collection (WELT). SOUTH ISLAND: Kahurangi National Park, Salisbury track, 15 November 2011, Lehnebach, Frericks & Moorhouse SP 104390 (WELT); Kahurangi National Park, Gordons Pyramid route close to Salisbury track, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104391 (WELT); Kahurangi National Park, Gordons Pyramid route close to Salisbury track, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104392 (WELT); Kahurangi National Park, Gordons Pyramid route, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104396 (WELT); St Arnaud Range, road to Rainbow skifield, 10 November 2012, Lehnebach, Moorhouse & Upson SP 104155 (WELT); Arthur‘s Pass National Park, Avalanche Peak track, 10 December 2011, Lehnebach & Zeller SP 104140 (WELT); Mount Cook National Park, Governor‘s Bush track, 20 November 2012, Lehnebach & Zeller SP 104158 (WELT); Kinloch, Glacier Burn track, 23 November 2012; Lehnebach & Zeller SP 104394 (WELT); Routeburn track, track to Key Summit from the Divide, 25 November 2012, Lehnebach & Zeller SP 104395 (WELT).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF3FF59F864CC13F844.taxon	etymology	Etymology: — The epithet reflecting the transparent nature of the labellum of this species.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF3FF59F864CC13F844.taxon	distribution	Distribution: — Endemic to New Zealand. North and South Islands (Fig. 9 D).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B996EFFF3FF59F864CC13F844.taxon	biology_ecology	Habitat: — In leaf litter, under southern beech forest (Fuscospora or Lophozonia, Nothofagaceae) or Myrtaceae scrub, between 600 to 1300 m. Phenology: — Flowering September to October; fruiting November to early January. Conservation status: — Corybas vitreus is common in montane areas of the southern North Island and widespread in the South Island. It is, therefore, regarded as ‘ Not Threatened’ using the criteria of Townsend et al. (2008).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9969FFF2FF59F84DCD30F7E7.taxon	materials_examined	Type: — NEW ZEALAND. North Island: Tongariro National Park, Whakapapa, along Whakapapanui stream, 21 October 2011, McGlynn SP 104210 (holotype: WELT!)	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9969FFF2FF59F84DCD30F7E7.taxon	diagnosis	Diagnosis: — C. wallii resembles C. vitreus in the pale colour of its flower but it differs by its conspicuously yellow to pale green labellum lamina and margins, the presence of numerous glandular trichomes on the internal and external surface of the labellum and larger leaves. It differs from C. trilobus by its overall pale green to yellow flower.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9969FFF2FF59F84DCD30F7E7.taxon	description	Terrestrial herbs, 13 – 34 mm tall at flowering. Leaf distinctly petiolate, petiole (5.5) 9.3 – 15.1 (28.8) mm long; lamina cordiform to sub-oblong or sub-hastate, (6.4) 8.8 – 11.2 (14) × (9.3) 12.6 – 17.0 (23.5) mm; margin entire; apex mucronate with mucro (0.2) 1.5 – 2.0 (2.6) mm long. Flower solitary, held erect on a peduncle (2.7) 4.4 – 6.2 (11.6) mm long, floral bract narrowly triangular to deltate when flattened, (2.6) 4.2 – 5.5 (10) × (1.4) 2.2 – 2.8 (3.7) mm, dorsal sepal pale yellowgreen, arching over the labellum, concave to cucullate, narrow at the base and widely spathulate towards the tip and at times bearing trichomes on the upper surface, apex emarginated or rounded; lateral sepal linear-filiform, pale yellowgreen, at times pale pink, (9.4) 13.3 – 17.8 (25) mm long; petals are similar to the dorsal sepals but longer, (24.5) 39.5 – 51.2 (62.2) mm long; labellum pale green or yellowish, less often with a few blotches of pink near the upper section, auriculate at base, aperture (1.2) 1.8 – 2.1 (2.6) mm in diameter; lamina deflexed, ca. 7 mm wide, with a central groove formed by the inwards folding of the lamina, extending downwards to the lower margin and sunken pit formed at the point where the lamina bends, margin incurve, mostly entire but erose at the lower margin, inner surface of the labellum covered with glandular trichomes, some also present in the outer surface. Ovary (3.0) 4.7 – 6.5 (9.0) mm long. Column 2.3 mm long, straight with deltate to shallowly deltate wings flanking the stigma.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9969FFF2FF59F84DCD30F7E7.taxon	materials_examined	Specimens examined: — NORTH ISLAND: Boundary Stream Main Island, Tumunako loop track, 19 October 2012, Lusk SP 104188 (WELT); Tongariro National Park, Whakapapa, sites along Whakapapanui river, 21 October 2011, McGlynn SP 104175 (WELT); Egmont / Taranaki National Park, about 75 m up Nature Loop track, behind camphouse, 14 November 2011, McGlynn SP 104179 (WELT); Egmont National Park, North Egmont visitor centre, Ngatoro loop walk, 14 November 2011, McGlynn SP 104409 (WELT); Egmont National Park, North Egmont Visitor Centre, Ngatoro loop walk, 29 October 2012, McGlynn SP 104410 (WELT); Egmont National Park, Stratford Plateau to ski field, 30 October 2012, McGlynn SP 104411 (WELT); Ruahine Forest Park, track to Rangiwahia hut, 24 September 2012, McGlynn SP 104178 (WELT); Eastern Ruahine Ranges, Sunrise trackt to Sunrise hut, 26 September 2011, Lehnebach, Zeller & Lusk SP 104406 (WELT); Eastern Ruahine Ranges, Swamp track, 26 September 2011, Lehnebach, Zeller & Lusk SP 104407 (WELT); Eastern Ruahine Ranges, Swamp track, 26 September 2011, Lehnebach, Zeller & Lusk SP 104408 (WELT); Tararua Forest Park, Otaki Forks, Pukeatua track, near the summit of Pukeatua, 25 October 2014, Lehnebach & Zeller SP 104164 (WELT); Rimutaka Range, Mount Climie, under scrub by the roadside, 02 Nov 2014, Lehnebach & Zeller SP 104169 (WELT). SOUTH ISLAND: Kahurangi National Park, track to Salisbury lodge, 15 November 2011, Lehnebach, Frericks & Moorhouse SP 104124 (WELT); Kahurangi National Park, Gordons Pyramid route, close to Potholes track, 16 November 2011, Lehnebach, Frericks & Moorhouse SP 104393 (WELT); Nelson Lakes National Park, Mt Robert road, 9 November 2012, Lehnebach, Moorhouse & Upson SP 104151 (WELT).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9969FFF2FF59F84DCD30F7E7.taxon	etymology	Etymology: — This species is named after Walli (Walburga) Zeller, mother of the second author of this article.	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9969FFF2FF59F84DCD30F7E7.taxon	distribution	Distribution: — Endemic to New Zealand. North and South Islands (Fig. 10 D).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9969FFF2FF59F84DCD30F7E7.taxon	biology_ecology	Habitat: — In leaf litter under southern beech (Fuscospora or Lophozonia Nothofagaceae] or kamahi (Weinmania racemosa Linnaeus (1782: 227), Cunnoniaceae) forest, mossy seepages or gravelly soils, between 600 to 1150 m. Phenology: — Flowering October to mid November, fruiting September to early January. Conservation status: — Corybas wallii is common montane and sub-alpine areas of the North and South Islands. It is, therefore, regarded as ‘ Not Threatened’ using the criteria of Townsend et al. (2008).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
E056827B9972FFE8FF59FF02CC7BFE1C.taxon	distribution	NORTH ISLAND: Whanganui, Gordon Park Scenic Reserve, 02 October 2012, McGlynn SP 104181 (WELT); Whanganui, Gordon Park Scenic Reserve, 02 October 2012, McGlynn SP 104182 (WELT); Whanganui, Gordon Park Scenic Reserve, 21 October 2012, McGlynn SP 104183 (WELT). Masterton, Upper Plain road, Highden Station, a QEII covenant, 15 September 2012, Enright SP 104184 (WELT); Masterton, Upper Plain road, Highden Station, a QEII covenant, 15 September 2012, Enright SP 104423 (WELT). Turakina Valley Road, Sutherland’s Bush, a Forest and Bird Reserve, in Podocarp-broadleaf forest by river terrace, 19 November 2012, McGlynn SP 104195 (WELT).	en	Lehnebach, Carlos A., Zeller, Andreas J., Frericks, Jonathan, Ritchie, Peter (2016): Five new species of Corybas (Diurideae, Orchidaceae) endemic to New Zealand and phylogeny of the Nematoceras clade. Phytotaxa 270 (1): 1-24, DOI: 10.11646/phytotaxa.270.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.270.1.1
