Coprosma

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Coprosma is a genus of flowering plants in the family Rubiaceae. It is found in New Zealand, Hawaiian Islands, Borneo, Java, New Guinea, islands of the Pacific Ocean to Australia and the Juan Fernández Islands.[1]

Description

The name Coprosma means "smelling like dung"[2][3] and refers to the smell (methanethiol) given out by the crushed leaves of a few species.[4]

Many species are shrubs or subshrubs with tiny evergreen leaves, but some are small trees and some have much larger leaves.[5] The flowers have insignificant petals and are wind-pollinated, with long anthers and stigmas. Most species are dioecious, but some (particularly those native to New Zealand) species can sometimes have individuals with perfect flowers.[6] Natural hybrids are common.[7] The fruits are non-poisonous juicy berries variously coloured bright orange, red, blue, white, or colourless, most often containing two small seeds.[8] The orange fruit of the larger species were eaten by Māori children, and are also popular with birds.[citation needed] It is said that coffee can be made from the seeds, Coprosma being related to the coffee plants.[citation needed] A notable feature of the genus is the domatia, hollows on the leaf undersides in the axils of leaf veins, that encourage certain kinds of mites to take up residence, which feed on and reduce parasitic fungi which attack the leaf.[9] Although some early research attributed to the domatia and stipules the ability to harbour nitrogen-fixing bacteria,[10] more rigorous tests found this not to be the case.[11]

Species

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References

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  1. ^ Page Module:Citation/CS1/styles.css has no content."Coprosma in the World Checklist of Rubiaceae". Retrieved 13 June 2014.
  2. ^ Page Module:Citation/CS1/styles.css has no content.Forster, Johann Reinhold (1776). Characteres generum plantarum, quas in itinere ad insulas maris Australis: collegerunt, descripserunt, delinearunt, annis 1772-1775. doi:10.5962/bhl.title.4448.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Verstraete B, De Block P, Robbrecht E (2025). "A survey of generic names in Rubiaceae (Gentianales) with notes on context and patterns in naming". Taxon. 74 (5): 1153–1171. doi:10.1002/tax.13360.
  4. ^ Page Module:Citation/CS1/styles.css has no content.Cambie, R.C. (August 1976). "A New Zealand Phytochemical Register — Part III". Journal of the Royal Society of New Zealand. 6 (3): 307–379. doi:10.1080/03036758.1976.10421479.
  5. ^ Page Module:Citation/CS1/styles.css has no content.Cantley, J. T. (2014). Evolution and historical biogeography of pacific coprosma (Rubiaceae) (Doctor of Philosophy thesis). Hawai'i: ProQuest Dissertations & Theses. Retrieved 2025-09-21.
  6. ^ Page Module:Citation/CS1/styles.css has no content.Cantley, J.T.; D. Frohlich; C.T. Martine (2016). "Multiple Records of Monoecy and Leakiness in Dioecious Taxa of Hawaiian Coprosma spp. (Rubiaceae)". Records of the Hawaiian Biological Survey. 118: 9–12. ISSN 2376-3191.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Gardner, Rhys (2002). "Tony Druces table of hybrid New Zealand coprosmas" (PDF). Auckland Botanical Society Journal. 57: 138-139.
  8. ^ Page Module:Citation/CS1/styles.css has no content.Oliver, W. R. B (1935). "The genus Coprosma". Bernice P Bishop Museum Bulleting. 132.
  9. ^ Page Module:Citation/CS1/styles.css has no content.Monks A, O'Connell DM, Lee WG, Bannister JM, KYS, Dickinson JM (2007). "Benefits associated with the domatia mediated tritrophic mutualism in the shrub Coprosma lucida". Oikos. 116 (5): 873–881. Bibcode:2007Oikos.116..873M. doi:10.1111/j.0030-1299.2007.15654.x.
  10. ^ Page Module:Citation/CS1/styles.css has no content.Stevenson, Greta (October 1959). "Fixation of Nitrogen by Non-nodulated Seed Plants". Annals of Botany. 23 (4): 622–635. doi:10.1093/oxfordjournals.aob.a083680.
  11. ^ Page Module:Citation/CS1/styles.css has no content.Silvester, W. B.; Astridge, Sandra (August 1971). "Reinvestigation of Coprosma for ability to fix atmospheric nitrogen". Plant and Soil. 35 (1–3): 647–650. doi:10.1007/BF01372694.

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