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Rhopalostylis
Flowers and fruit of Rhopalostylis sapida
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Arecales
Family:	Arecaceae
Subfamily:	Arecoideae
Tribe:	Areceae
Subtribe:	Rhopalostylidinae
Genus:	Rhopalostylis H.Wendl. & Drude
Species
Rhopalostylis baueri Rhopalostylis sapida

Rhopalostylis is a genus of two species of palms native to the South Pacific. Both are smooth-trunked, with regular ringed scars from fallen leaves. The leaves are 3–5 m in length, and the leaf bases encircle the trunk.

Distribution

Rhopalostylis baueri occurs on Norfolk Island and the Kermadec Islands northeast of New Zealand; the Kermadec Islands population, formerly separated as R. cheesemanii, was included in R. baueri in 2005 after comparison revealed no significant differences. R. sapida, known as the nikau palm, is the only palm native to mainland New Zealand, and is found in lowland forests in the North Island, in coastal areas of the South Island as far south as Banks Peninsula, and on the Chatham Islands at 44°S. R. sapida thus has the southernmost range of any palm genus.

Classification

Subfamily: Arecoideae; tribe: Areceae; subtribe: Rhopalostylidinae. Rhopalostylis is closely related to the Lord Howe Island genus Hedyscepe.

Species

Image	Trunk	Scientific name	Common name	Distribution
		Rhopalostylis baueri	Norfolk Island palm, niau, Kermadec nikau	Norfolk Island (Australia) and Kermadec Islands (New Zealand)
		Rhopalostylis sapida	Nīkau	New Zealand the North Island, and on the South Island as far south as Okarito, west and Banks Peninsula in the east. Chatham Island and Pitt Island/Rangiauria

References

1. H.A. Wendland & Drude, Linnaea 39:180, 234. 1875 Type:R. baueri

• de Lange, P.J.; Gardner, R.O.; Crowcroft, G.M.; Stalker, F.; Cameron, E.K.; Braggins, J.E; Christian, M.L. 2005: Vascular flora of Norfolk Island: some additions and taxonomic notes. New Zealand Journal of Botany 43: 563-596.
• "Trilepidea Newsletter (July 2005). (New names for the Kermadec nikau palm and Three Kings cabbage tree)" (PDF). New Zealand Plant Conservation Network. Retrieved 2010-10-02.
• Kew palms checklist: Rhopalostylis

v t e Arecaceae genera
Baker & Dransfield (2016) taxonomy
Calamoideae	Eugeissoneae Eugeissona Lepidocaryeae Oncocalamus Eremospatha Laccosperma Raphia Lepidocaryum Mauritia Mauritiella Calameae Korthalsia Eleiodoxa Salacca Metroxylon Pigafetta Plectocomia Myrialepis Plectocomiopsis Calamus
Nypoideae	Nypa
Coryphoideae	Sabaleae Sabal Cryosophileae Schippia Trithrinax Zombia Coccothrinax Hemithrinax Leucothrinax Thrinax Chelyocarpus Cryosophila Itaya Sabinaria Phoeniceae Phoenix Trachycarpeae Chamaerops Guihaia Trachycarpus Rhapidophyllum Maxburretia Rhapis Livistona Licuala Johannesteijsmannia Pholidocarpus Saribus Lanonia Acoelorraphe Serenoa Brahea Colpothrinax Copernicia Pritchardia Washingtonia Chuniophoeniceae Chuniophoenix Kerriodoxa Nannorrhops Tahina Caryoteae Caryota Arenga Corypheae Corypha Borasseae Bismarckia Satranala Hyphaene Medemia Latania Lodoicea Borassodendron Borassus
Ceroxyloideae	Pseudophoenix Ceroxylon Juania Oraniopsis Ravenea Ammandra Aphandra Phytelephas
Arecoideae	Podococcus Orania Sclerosperma Roystonea Reinhardtia Manicaria Hyospathe Leopoldinia Iriarteeae Iriartella Dictyocaryum Iriartea Socratea Wettinia Chamaedoreeae Hyophorbe Wendlandiella Synechanthus Chamaedorea Gaussia Cocoseae Beccariophoenix Jubaeopsis Voanioala Allagoptera Attalea Butia Cocos Jubaea Syagrus Parajubaea Acrocomia Astrocaryum Aiphanes Bactris Desmoncus Barcella Elaeis Euterpeae Euterpe Prestoea Neonicholsonia Oenocarpus Geonomateae Welfia Pholidostachys Calyptrogyne Calyptronoma Asterogyne Geonoma Pelagodoxeae Pelagodoxa Sommieria Areceae Actinorhytis Archontophoenix Actinokentia Chambeyronia Kentiopsis Areca Nenga Pinanga Basselinia Burretiokentia Cyphophoenix Cyphosperma Lepidorrhachis Physokentia Carpoxylon Satakentia Neoveitchia Cyphokentia Clinosperma Dypsis Lemurophoenix Marojejya Masoala Calyptrocalyx Linospadix Howea Laccospadix Oncosperma Deckenia Acanthophoenix Tectiphiala Ptychosperma Ponapea Adonidia Balaka Veitchia Carpentaria Wodyetia Drymophloeus Normanbya Brassiophoenix Ptychococcus Jailoloa Manjekia Wallaceodoxa Rhopalostylis Hedyscepe Nephrosperma Phoenicophorium Roscheria Verschaffeltia Bentinckia Clinostigma Cyrtostachys Dictyosperma Dransfieldia Heterospathe Hydriastele Iguanura Loxococcus Rhopaloblaste

• Rhopalostylis
• Arecaceae genera
• Flora of New Zealand
• Taxa named by Carl Georg Oscar Drude
• Taxa named by Hermann Wendland
• Flora of Norfolk Island
• Flora of the Kermadec Islands