Sporadanthus ferrugineus explained

Sporadanthus ferrugineus, the bamboo rush or giant wire rush, is a restiad plant endemic to the northern North Island of New Zealand.

Taxonomy

It was long considered that Sporadanthus plants in the North Island were the same species as Sporadanthus traversii, which is native to Chatham Island, east of the New Zealand mainland. The North Island plants were described as the separate species S. ferrugineus in 1999, with S. traversii becoming regarded as endemic to Chatham Island.[1]

Distribution

S. ferrugineus grows in acidic, ombrotrophic, restiad-dominated raised bogs. Draining of such bogs for farming in the northern North Island has greatly reduced their extent. S. ferrugineus is now mainly found at the peat domes of Kopuatai and Torehape on the Hauraki Plains and Moanatuatua Swamp in the Waikato basin.[1]

Biology

S. ferrugineus is the only known food source for the moth Houdinia flexilissima.[2]

Conservation

Under the New Zealand Threat Classification System, it is classified as "At Risk - Relict" (It has both a restricted range, and its documented decline shows it as now occupying less than 10% of its former range, but the population is considered stable.)[3]

In 2011, it was voted "Plant of the Year" in a poll run by the New Zealand Plant Conservation Network.[4]

External links

Notes and References

  1. de Lange . Peter J. . Heenan . Peter B.. Clarkson. B. D.. Clarkson. B. R. . 1999 . Taxonomy, ecology, and conservation of Sporadanthus (Restionaceae) in New Zealand . New Zealand Journal of Botany . en . 37 . 3 . 413–431 . 10.1080/0028825x.1999.9512645 . 0028-825X.
  2. Hoare . Robert . Dugdale . John . Watts . Corinne . 2006-11-02 . The world's thinnest caterpillar? A new genus and species of Batrachedridae (Lepidoptera) from Sporadanthus ferrugineus (Restionaceae), a threatened New Zealand plant . Invertebrate Systematics . en . 20 . 5 . 571–583 . 10.1071/is06009 . 1447-2600 . Researchgate.
  3. de Lange. P.J.. Rolfe. J.R.. Barkla. J.W.. Courtney. S.P.. Champion. P.D.. Perrie. L.R.. Beadel. S.M.. Ford. K.A.. Breitwieser. I.. Schönberger. I.. Hindmarsh-Walls. R.. 2018-05-01. Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. 22. 38. 1041649797.
  4. Web site: Rush blitzes competition . 18 December 2011 . New Zealand Plant Conservation Network . 19 December 2011.