Carex talbotii

Last updated

Carex talbotii
Carex berggrenii Petrie (AM AK330997).jpg
Status NZTCS D.svg
Declining (NZ TCS) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Carex
Species:
C. talbotii
Binomial name
Carex talbotii
Kottaim.
Carex berggrenii DistMapNZ.png
Occurrence data from AVH
Synonyms

Carex talbotii, common name Berggren's sedge, is a species of sedge in the family Cyperaceae. [4] It is endemic to New Zealand, being found on both the North and the South Islands. [5]

Contents

Description

It is a small, tufted, dark red-purple or orange-red sedge. Its smooth culms (circular in cross-section) are 15-30 mm long are flattened above, and almost enclosed by light brown sheaths. The linear, almost flat leaves are 30-60 mm by 1-2.5-3 mm, with distinct nerves, and blunt apices. The terminal spike is male (on a peduncle) with the remaining sessile (or almost sessile) spikes being female, and crowded around the base of the male spike. The bracts which subtend the inflorescence are longer than it. [5]

It flowers from October to February and fruits from October to June, [5] and the nuts are dispersed by granivory and wind. [6]

Distribution & habitat

It is found in the Central Ranges of the North Island. In the South Island it is found generally easterly from Lake Tennyson south. It is a montane to subalpine wetland species growing on the margins of lakes and streams. [5]

Conservation status

Assessments under the New Zealand Threat Classification System (NZTCS), declared it to be "At Risk – Naturally Uncommon" (NU) in 2013, and in 2017 to be "At Risk - Declining" (Dec). [1]

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References

  1. 1 2 de Lange, P.J. et al. "Conservation status of New Zealand indigenous vascular plants, 2017" (PDF). 2017. p. 9.
  2. "NZOR Name Details - Carex berggrenii Petrie". www.nzor.org.nz. Retrieved 14 November 2019.
  3. Petrie, D. (1885) Art. XLVII.—Description of New Species of Native Plants, Trans. & Proc. New Zealand Inst. 18: 297
  4. "Carex talbotii Kottaim. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 7 May 2024.
  5. 1 2 3 4 "Carex berggrenii | New Zealand Plant Conservation Network". nzpcn.org.nz. Retrieved 14 November 2019.
  6. Thorsen, M.J.; Dickinson, K.J.M.; Seddon, P.J. (2009). "Seed dispersal systems in the New Zealand flora". Perspectives in Plant Ecology, Evolution and Systematics. 11 (4): 285–309. doi:10.1016/j.ppees.2009.06.001. ISSN   1433-8319.