Pittosporum crassifolium, karo, stiffleaf cheesewood, kaikaro or kihiki[2] is a relatively fast-growing large shrub or small tree with an erect, fastigiate growth habit.[3][4] It is native to New Zealand.[5]
This species is self-supporting with a simple form that can grow up to 10m tall. Pittosporum crassifolium is part of the wider Pittosporaceae family, which has over 160 species in the southern hemisphere.[6]
^"Pittosporum crassifolium Banks & Sol. Ex A.Cunn". nzflora. Retrieved 15 March 2023.
^"Karo, kaikaro, tarata, kōhūhū, koihu". Maori uses: Medicinal plants, Trees & Shrubs. University of Auckland.
^"Pittosporum crassifolium Banks & Sol. Ex A.Cunn. (Host Plant)". Plant-SyNZ. Retrieved 16 March 2023.
^Cite error: The named reference :4 was invoked but never defined (see the help page).
^Eagle, Audrey (2008). Eagle's complete trees and shrubs of New Zealand volume one. Wellington, NZ: Te Papa Press. p. 210. ISBN 9780909010089.
^Metcalf, L.J (1972). New Zealand Trees & Shrubs, A Comprehensive Guide to Cultivation and Identification. Auckland: Reed Publishing.
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