Juncus kraussiiHochst.

WFO wfo-0000776677 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Juncus kraussii, photographed by Arnim Littek
fig. a Arnim Littek, CC BY 4.0 / 2022-05-27 / obs. 201803906
Juncus kraussii, photographed by Halema J
fig. b Halema J, CC BY 4.0 / obs. 192479621
Juncus kraussii, photographed by Presha Soogrim
fig. c Presha Soogrim, CC BY 4.0 / obs. 195563608
Juncus kraussii, photographed by Arnim Littek
fig. d Arnim Littek, CC BY 4.0 / obs. 189702558
Juncus kraussii, photographed by Arnim Littek
fig. e Arnim Littek, CC BY 4.0 / obs. 187009924
Juncus kraussii, photographed by Arnim Littek
fig. f Arnim Littek, CC BY 4.0 / obs. 185677195
Juncus kraussii, photographed by Arnim Littek
fig. g Arnim Littek, CC BY 4.0 / obs. 180040146
Juncus kraussii, photographed by Lisa Bennett
fig. h Lisa Bennett, CC BY 4.0 / obs. 179451971

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
04198790
Filed as
Juncus kraussii subsp. austerus (Buchenau) Snogerup
Det. by
H. Balslev 2014-01-01
Collected
not recorded
Origin
not recorded
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 20 botanical countries

Regions where Juncus kraussii is native: Cape Provinces, Free State, KwaZulu-Natal, Lesotho, Mozambique, Chatham Is., New South Wales, New Zealand North, New Zealand South, Northern Territory, Queensland, South Australia, Tasmania, Victoria, Western Australia, Argentina South, Brazil South, Brazil Southeast, Chile South, Uruguay Cape ProvincesFree StateKwaZulu-NatalLesothoMozambiqueNew South WalesNew Zealand NorthNew Zealand SouthNorthern TerritoryQueenslandSouth AustraliaTasmaniaVictoriaWestern AustraliaArgentina SouthBrazil SouthBrazil SoutheastChile SouthUruguay Chatham Is.
Native distribution of Juncus kraussii, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Chatham Is. CTM AUSTRALASIA
New South Wales NSW
New Zealand North NZN
New Zealand South NZS
Northern Territory NTA
Queensland QLD
South Australia SOA
Tasmania TAS
Victoria VIC
Western Australia WAU
Cape Provinces CPP AFRICA
Free State OFS
KwaZulu-Natal NAT
Lesotho LES
Mozambique MOZ
Argentina South AGS SOUTHERN AMERICA
Brazil South BZS
Brazil Southeast BZL
Chile South CLS
Uruguay URU

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 1,492 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 4.4 °C 8.8 °C 14.9 °C
Warmest month, mean daily high 18.5 °C 21.9 °C 27.8 °C
Annual rainfall 485 mm 1,010 mm 1,632 mm
Rainfall in the driest quarter 59 mm 153 mm 317 mm

It is barely found anywhere that freezes. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,492 research-grade observations of Juncus kraussii that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 7 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Juncus afer G.Bertol.
  • Juncus austerus Buchenau
  • Juncus fasciculiflorus Adamson
  • Juncus kraussii var. effusus Adamson
  • Juncus kraussii var. parviflorus Adamson
  • Juncus maritimus var. australiensis Buchenau
  • Juncus spretus Schult. & Schult.f.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.