Bulbinella rossii

Bulbinella rossii, commonly known as the Ross lily, is a species of flowering plant in genus Bulbinella. It is one of the subantarctic megaherbs. The specific epithet honours British Antarctic explorer James Clark Ross, who visited Campbell Island in December 1840.

Ross lily
Ross lily in flower with Australasian pipit
B. rossii as Chrysobactron rossii (Plate XLIV-XLV)

Naturally Uncommon (NZ TCS)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asphodelaceae
Subfamily: Asphodeloideae
Genus: Bulbinella
Species:
B. rossii
Binomial name
Bulbinella rossii
Synonyms
  • Chrysobactron rossii Hook.f.
  • Anthericum rossii (Hook.f.) Hook.f.

Description

Bulbinella rossii is a large, dioecious, perennial lily, growing up to 1 m in height and with a basal diameter of 40 mm. The dark green, fleshy, strap-like leaves are 0.6–1 m long and 15–60 mm wide. The inflorescence is a cylindrical raceme up to 600 mm long. The golden yellow flowers are densely crowded, 10–14 mm in diameter, and are often flushed with orange. The ovoid seed capsule is 10 mm long, containing narrowly winged, dark brown seeds. The plant flowers from October to January and fruits from December to March.[2]

Distribution and habitat

The lily is endemic to New Zealand’s subantarctic Auckland and Campbell Islands. There it is common and widespread from sea level to the tops of the island mountains. Because it thrives where the ground has been disturbed, and because it is not particularly palatable to browsing animals, it is common near old human habitation sites and may form dense colonies in open herbfield and tussock grassland.[2]

Conservation Status

The species is listed as "At Risk - Naturally Uncommon" in the most recent (2018) assessment using New Zealand Threatened Classification for plants, because of its restricted range.[1]

Megaherb community on Campbell Island with Bulbinella rossii (yellow to orange flowers) and Anisotome latifolia (pink flowers)
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References

Notes
  1. Lange, Peter J. de; Rolfe, Jeremy R.; Barkla, John W.; Courtney, Shannel P.; Champion, Paul D.; Perrie, Leon R.; Beadel, Sarah M.; Ford, Kerry A.; Breitwieser, Ilse; Schönberger, Ines; Hindmarsh-Walls, Rowan (May 2018). "Conservation status of New Zealand indigenous vascular plants, 2017" (PDF). New Zealand Threat Classification Series. 22: 42. OCLC 1041649797.
  2. New Zealand Plant Conservation Network

Sources
  • "Bulbinella rossii". line. New Zealand Plant Conservation Network. 2010-04-06. Retrieved 2011-01-25.


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