Isolepis inundataR.Br.

WFO wfo-0000449223 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Isolepis inundata, photographed by Paul Bell-Butler
fig. a Paul Bell-Butler, CC BY 4.0 / 2021-10-29 / obs. 166245082
Isolepis inundata, photographed by Thomas Mesaglio
fig. b Thomas Mesaglio, CC BY 4.0 / obs. 125813976
Isolepis inundata, photographed by Thomas Mesaglio
fig. c Thomas Mesaglio, CC BY 4.0 / obs. 97859397
Isolepis inundata, photographed by Jacqui Geux
fig. d Jacqui Geux, CC BY 4.0 / obs. 31645115
Isolepis inundata, photographed by Russell Best
fig. e Russell Best, CC BY 4.0 / obs. 75678714
Isolepis inundata, photographed by Russell Best
fig. f Russell Best, CC BY 4.0 / obs. 75679587
Isolepis inundata, photographed by Stephen Thorpe
fig. g Stephen Thorpe, CC BY 4.0 / obs. 117882301
Isolepis inundata, photographed by Jenny Christianson
fig. h Jenny Christianson, CC0 1.0 / obs. 30652385

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
Smithsonian, US National Herbarium
Accession
US 94756
Filed as
Isolepis inundata R.Br.
Det. by
Strong, Mark T., (BOT), Smithsonian Institution - National Museum of Natural History (UNITED STATES)
Collected
Wilkes Explor. Exped.
Origin
AU
The sheet
View the digitised specimen (CC0 1.0)

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 10 botanical countries

Regions where Isolepis inundata is native: New Guinea, Chatham Is., New South Wales, New Zealand North, New Zealand South, Norfolk Is., Queensland, South Australia, Tasmania, Victoria New GuineaNew South WalesNew Zealand NorthNew Zealand SouthQueenslandSouth AustraliaTasmaniaVictoria Chatham Is.Norfolk Is.
Native distribution of Isolepis inundata, 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
Norfolk Is. NFK
Queensland QLD
South Australia SOA
Tasmania TAS
Victoria VIC
New Guinea NWG ASIA-TROPICAL

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 68 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 2.9 °C 6.6 °C 10.6 °C
Warmest month, mean daily high 19.9 °C 24.2 °C 27.7 °C
Annual rainfall 676 mm 1,024 mm 1,609 mm
Rainfall in the driest quarter 119 mm 167 mm 324 mm

It is found where winters are cool but frost is light or absent. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 68 research-grade observations of Isolepis inundata 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 14 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.

  • Isolepis conspersa Nees
  • Isolepis gunnii Steud.
  • Isolepis multinervosa Boeckeler
  • Isolepis propinqua R.Br.
  • Isolepis propinqua Nees
  • Isolepis urvillei Steud.
  • Scirpus cartilagineus var. propinqua Benth.
  • Scirpus conspersus (Nees) Boeck.
  • Scirpus conspersus (Nees) Laing
  • Scirpus inundatus (R.Br.) Poir.
  • Scirpus inundatus var. major C.B.Clarke
  • Scirpus nanus F.Phil.
  • Scirpus phaeocarpus F.Phil.
  • Scirpus urvillei Boeckeler

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.