Classification
Class
Magnoliopsida Brongn.
Order
Asterales Link
Family
Compositae Giseke
Genus
Macrolearia Saldivia
 Nomenclature
Scientific Name:
Macrolearia chathamica (Kirk) Saldivia in Saldivia et al., Syst. Bot. 47: 624 (2022)
Synonymy:
  • ≡ Olearia chathamica Kirk, Trans. New Zealand Inst. 23: 444 (1891)
TYPE: NEW ZEALAND. Chatham Island, H. H. Travers s.n. (lectotype: WELT SP31984 designated by Saldivida et al. 2022, isolectotypes [probably]: SP33902, SP33951 [in part]
  • = Olearia chathamica var. dendyi Cockayne, Trans. & Proc. New Zealand Inst. 34: 320 (1901 [1902])
TYPE: NEW ZEALAND. Pitt Island, Jan 1901, A. Dendy s.n. (lectotype: WELT SP56809 designated by Daldividia et al. 2022, isolectotype: CHR 290137
 Description

Shrub up to 2 m. tall; branchlets, lvs below, and peduncles clad in soft white tomentum. Lvs 2.5–8 × 1·5–4 cm., lanceolate to elliptic or oblong-ovate, acute, with short broad petiole, coriac., closely serrate, teeth blunt, calloused. Peduncles 5 cm. or more long; bracts few, linear-lanceolate. Capitula 3·5–4·5 cm. diam.; outer phyll. densely clad in cobwebby tomentum on back, acute; ray-florets white to purplish, disk-florets purplish; achenes linear, slightly curved, pubescent to almost glab., 4–5 mm. long; pappus-hairs slender, up to 5 mm. long.

[From: Allan (1961) Flora of New Zealand. Volume 1. as Olearia chathamica Kirk]

 Biostatus
Indigenous (Endemic)
 Phenology

Flowering: Oct.–Feb.

 Bibliography
Cockayne, L. 1902: A short account of the plant-covering of Chatham Island. Transactions and Proceedings of the New Zealand Institute 34: 243–325.
de Lange, P.J.; Norton, D.A.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Hitchmough, R.; Townsend, A.J. 2009: Threatened and uncommon plants of New Zealand (2008 revision). New Zealand Journal of Botany 47: 61–96. [as Olearia chathamica Kirk] [Declining]
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76. [as Olearia chathamica Kirk]
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [as Olearia chathamica Kirk] [Nationally Vulnerable]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [as Olearia chathamica Kirk] [Declining]
Kirk, T. 1891: On the Macrocephalous Olearias of New Zealand. Transactions of the New Zealand Institute 23: 443–448.
Saldivia, P.; Wagstaff, S.J.; Breitwieser, I.; Orlovich, D.A.; Lord, J.M. 2022: A generic taxonomic synopsis of the Pleurophyllum clade (Asteraceae: Astereae: Celmisiinae) with the recognition of the New Zealand endemic new genus Macrolearia. Systematic Botany 47(2): 607–634.