Carex berggrenii

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

Carex berggrenii
AM AK330997

Declining (NZ TCS)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Carex
Species:
C. berggrenii
Binomial name
Carex berggrenii
Occurrence data from AVH

It has no synonyms.[5][4]

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.[4]

It flowers from October to February and fruits from October to June[4] 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.[4]

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]

  • AM AK330996-2
  • AM AK330996-3
  • Isolectotype: AM AK199699-1
gollark: Wrong and lies.
gollark: Cease use of "redesign", apioform.
gollark: I think RES has that.
gollark: Tmpim is of course secretly managed by a random neural network on the osmarks.tk servers.
gollark: It feels like I'm using inverted color mode or something, owwww.

References
  1. 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 berggrenii | New Zealand Plant Conservation Network". nzpcn.org.nz. Retrieved 14 November 2019.
  5. "Carex berggrenii Petrie | Plants of the World Online | Kew Science". Plants of the World Online. 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.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.