Carmichaelia williamsii

Carmichaelia williamsii (common name William's broom or giant-flowered broom)[4] is a species of pea in the family Fabaceae. It is found only in the North Island of New Zealand.[4][2] Its conservation status (2018) is "At Risk (relict)" under the New Zealand Threat Classification System.[1]

Carmichaelia williamsii
(artist:Matilda Smith, 1914)

Relict (NZ TCS)[1]
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Genus:
Carmichaelia
Species:
C. williamsii
Binomial name
Carmichaelia williamsii
Occurrence data from AVH

Description

C. williamsii is the only yellow-flowered native broom, and it is distinguished from the introduced broom (Cytisus scoparius (L.) Link) by its light green, much wider, and more flattened branches, together with its larger, pale-yellow flowers which have purple or red veins, and its late-winter flowering (July to October, though flowering can occur throughout the year).[4]

Taxonomy

The species was first described by Thomas Kirk in 1880.[2][3] The earliest record in AVH, SP026354 was collected by Bishop William Williams in 1879 somewhere in the North Island,[5] and for whom Kirk named it.[3]

Habitat

It is a coastal species found in open forest, scrub, cliff faces and on scree.[4]

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References
  1. 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). "Conservation status of New Zealand indigenous vascular plants, 2017" (PDF). New Zealand Threat Classification Series. 22: 38. OCLC 1041649797.
  2. "Carmichaelia williamsii Kirk | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 8 December 2019.
  3. Thomas, K. (1880). "Art. LVIII.—Descriptions of new Flowering Plants: Carmichaelia williamsii". Transactions and Proceedings of the New Zealand Institute. 12: 394. Retrieved 8 December 2019.
  4. "Carmichaelia williamsii | New Zealand Plant Conservation Network". nzpcn.org.nz. Retrieved 8 December 2019.
  5. "SP026354, Australasian Virtual Herbarium, Council of Heads of Australasian Herbaria". avh.ala.org.au. Retrieved 8 December 2019.


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