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This species is accepted, and its native range is New Guinea.
A specimen from Kew's Herbarium


Wilson, P.G. (2008). Typification of Metrosideros regelii (Myrtaceae) and consideration of its generic position. Kew Bulletin 63: 347.

Morphology General Habit
Tree or shrub; bark grey, scaly
Morphology General Indumentum
Indumentum of simple hairs, relatively dense on young growth but becoming ± glabrous, with some hairs persisting on the undersurface of leaves, along the midvein and at the base of the lamina
Morphology General Shoots
New shoots with at least the first pair of leaves scale-like, c. 1.5 mm long (as in Dawson 1970, fig 1)
Morphology Leaves
Leaves 8.5 – 9  ×  c. 9 mm; lamina usually with two ascending lateral veins, venation reticulate with relatively large vein islets containing conspicuous oil glands; petiole 1.5 – 2 mm long
Morphology Reproductive morphology Flowers
Flowers red, c. 8 mm diam., hypanthium turbinate, 0.8 – 1 mm deep, the outside (and the backs of the sepals) glandular-warty; sepals ciliate, 0.6 – 0.9 mm long and up to 1.5 mm wide, the outer one semi-petaloid; petals c. 2.5 mm long
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens relatively few, in a single series; filaments 10 – 13 mm long, anthers c. 0.5 mm long
Morphology Reproductive morphology Flowers Gynoecium Style
Style c. 11 mm long
Morphology Reproductive morphology Fruits
Fruit capsular, c. 3.5 mm  ×  4.5 mm; fruiting hypanthium with 5 thickened veins, fenestrate
Morphology Reproductive morphology Inflorescences
Inflorescences borne in the lower axils or just below (ramiflorous), an axillary cluster of monads or metaxymonads (Briggs & Johnson 1979); pedicels 2 – 3 mm long, upper bracteoles at the base, or close to the base, of the hypanthium, 1.8 × c. 1 mm, glandular
Morphology Stem
Young stems with a very narrow, simple wing c. 0.2 mm wide
Mt Musgrave is to be found at approximately 8°55'35''S 147°28'55"E (WGS 84), with the summit c. 3060 m in altitude. From the account of the expedition (MacGregor 1890a, b), it is very likely that the specimen was collected on May 30th 1889 when they reached the higher parts of Mt Musgrave. MacGregor’s account (MacGregor 1890a: 205) states that it was on that day that they reached ‘a height exceeding 8000 feet’, the altitude mentioned on the specimen label. MacGregor describes Mt Musgrave as “composed of slate and quartz right to the top” and the trees above 6000 feet, where this species was found, as “smaller, and often very crooked”. Two days later, on Mt Knutsford (a neighbouring mountain with identical geology), he remarked that “the forest at this altitude [6500 feet] had the myrtaceous appearance noted on the higher regions of Mt Musgrave; and here, as there, the trees were not as a rule large” (MacGregor 1890a: 208).
New Guinea, Central Province, Mt Musgrave 8000′, 1889, MacGregor s.n., (lectotype K!, left hand element, designated here).

Native to:

New Guinea

Metrosideros regelii F.Muell. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Feb 17, 2005 Sir W Macgregor [s.n.], Australia K000276105 lectotype

First published in Trans. Roy. Soc. Victoria, n.s., 1(2): 6 (1889)

Accepted by

  • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Govaerts, R., Sobral, N., Ashton, P., Barrie, F., Holst, B.K., Landrum, L.L., Matsumoto, K., Fernanda Mazine, F., Nic Lughadha, E., Proença, C. & al. (2008). World Checklist of Myrtaceae: 1-455. Kew Publishing, Royal Botanic Gardens, Kew.


Kew Bulletin

  • Bailey, F. M. (1904). Contributions to the New Guinea Flora. Proc. Roy. Soc. Queensland 18: 1 – 5.
  • Briggs, B. G. & Johnson, L. A. S. (1979). Evolution in the Myrtaceae — evidence from inflorescence structure. Proc. Linn. Soc. New South Wales 102: 157 – 256.
  • Dawson, J. W. (1970). Pacific Capsular Myrtaceae 3. The Metrosideros complex: Mearnsia halconensis group and Metrosideros diffusa group. Blumea 18: 447 – 452.
  • Dawson, J. W. (1976). Pacific Capsular Myrtaceae XI. Redefinition of Metrosideros Banks ex Gaertn. and definition of infrageneric categories. Blumea 23: 7 – 11.
  • Dawson, J. W. (1984). New species and combinations in New Caledonian Metrosideros and Carpolepis (Myrtaceae) with notes on other species. Bull. Mus. Natl. Hist. Nat., Adansonia 4: 465 – 489.
  • Dawson, J. W., Whitaker, A. H., Whitaker, V. A., Gardner, R. C. & Wright, S. D. (2000). Two new species of Metrosideros (Myrtaceae) from New Caledonia: Dual characterisation with morphology and nrDNA sequence variation. Blumea 45: 433 – 441.
  • Gibbs, L. S. (1917). Myrtaceae, pp. 150 – 156 in ‘A Contribution to the Phytogeography and Flora of the Arfak Mountains’. Taylor & Francis, London.
  • MacGregor, W. (1890a). Journey to the Summit of the Owen Stanley Range, New Guinea. Proc. Roy. Geogr. Soc. London, n.s., 12: 193 – 223 + Map.
  • MacGregor, W. (1890b) Despatch Reporting Tour of Inspection Made by His Honour The Administrator of British New Guinea, Extending from Manu-Mano on the Coast of the Possession to the Owen Stanley Range in the Interior. Appendix D, pp. 37 – 48. In: British New Guinea. Annual Report on British New Guinea from 4th September, 1888, to 30th June, 1889. Government Printer, Brisbane.
  • Mueller, F. (1889). Records of observations on Sir William MacGregor’s highland-plants from New Guinea. Trans. Roy. Soc. Victoria, n.s., 1(2): 1 – 45.
  • Wilson, P. G., O’Brien, M. M., Heslewood, M. M. & Quinn, C. J. (2005). Relationships within Myrtaceae sensu lato based on a matK phylogeny. Pl. Syst. Evol. 251: 3 – 19.
  • Wright, S. D., Keeling, D. J., Ashton, F. G., Dawson, J. W. & Gardner, R. C. (2000). Phylogenetic analyses of New Caledonian Metrosideros and Carpolepis (Myrtaceae) from nrDNA (ITS) sequences. Austral. Syst. Bot. 13: 919 – 926.
  • ____, Gray, R. D. & Gardner, R. C. (2003) Energy and the rate of evolution: inferences from plant rDNA substitution rates in the Western Pacific. Evolution 57: 2893 – 2898.

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Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.