Auckland Museum. Vicinity Westport, 11.1905, W. Townson. Sheet No. 3376(1).* Since writing the above, Th. pachyphylla has been found to consist of two distinct jordanons, one in the North Island (Plate 79, Figs. D–H) and one in the South and Stewart Islands (Plate 81, Figs. F–G). Th. venosa typica and Th. ixioides typica have been recorded from New Caledonia. 9. Th. caesia Petr. Trans. N.Z. Inst., 51, 1919, 107 Up to 90 cm. high. Leaf up to 32 cm. long, recurved, concave with exterior ridges, linear-acuminate. Flowers 1–6, deep mauve with darker striae, perianth segments up to 15 mm. long. Column inclined backwards, reddish-blue with darker striae. Midlobe erect, as high as or higher than the anther, but not cucullate, reddish-brown with paler margins. Lateral lobes secondary, short, oblique, with bright yellow fimbriae. Distribution. Endemic—2. (North Auckland), 3a. (Kaipara), common throughout, from Kaikohe to the Waitakere Ranges, Matthews, Irwin, Bartlett, Hatch, etc. 5. (Volcanic Plateau), National Park, 12.1948, J. B. Irwin. 7. (Ruahine-Cook), Wallaceville Hill, 12.1946, J. Johnston. Silverstream and Upper Hutt, 11.1949, A. P. Druce. 10. (North-western), Westport, 12.1947, W. R. B. Oliver. Flowers Oct.–Dec., sea-level–2,000 ft.; scattered in scrub or tussock and along roadsides. Related to Th. pachyphylla Cheesmn. Group (g) 10. Th. aristata Ldl. Gen. et Spec. Orch., 1840, 521. Hatch, Trans. R.S.N.Z., 76, 1946, 59 Th. grandis F. Muel. ex Benth. Flor. Austr., 6, 1873, 319 Th. angustifolia Hook. f. Flor. Tasmn., 2, 1860, 5 (not of R. Br.) Th. megcalyptra R. D. Fitzg. Austr. Orch., 1, 1879, 5 Up to 30 cm. high. Leaf up to 10 cm. long (Australian specimens have been recorded with leaves up to 40 cm. long, but the New Zealand plants seem to have uniformly short leaves), shallow-concave with exterior ridges, linear-obtuse. Flowers 1–10, pale mauve, fragrant, perianth segments up to 10 mm. long. Column inclined slightly backwards, pale pink. Midlobe higher than the anther, cucullate, more or less emarginate, brownish-black all over. Lateral lobes secondary, horizontal, with short dense tufts of white or pink cilia. Distribution. Australia—not uncommon throughout all the States. New Zealand—2. (North Auckland). Kaitaia, 10.1920, H. B. Matthews. Kaikohe, 10.1949, Irwin and Gibson. 3a. (Kaipara), Nihotupu, 11.1946, E. D. Hatch. 4. (East Cape), Lnke Waikaremoana, 11.1949, C. Trevarthen. Flowers Oct.–Dec., sea-level–2,000 ft.; scattered along tracks, roadsides, and in scrub and grass. New South Wales has a jordanon in which the midlobe tends towards the longifolia type, and suggests perhaps the manner in which that complex came into being. 11. Th. longifolia J. R. and G. Forst. Char. Gen. Plant., 1776, 98, t49 A compound species of 6 jordanons, 1 in south-eastern Australia and Tasmania, 1 in New Caledonia, 1 in the Auckland Islands, and 3 in New Zealand proper.