Ischaemum aristatumL.

WFO wfo-0000876115 Accepted WFO 2026-06 4 photographs CC0

Plate 1 figs. a–d · 1 observation

This species has been photographed under an open licence only 1 time, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Ischaemum aristatum, photographed by 葉子
fig. a 葉子, CC0 1.0 / 2020-07-09 / obs. 84872442
Ischaemum aristatum, photographed by 葉子
fig. b 葉子, CC0 1.0 / obs. 84872436
Ischaemum aristatum, photographed by 葉子
fig. c 葉子, CC0 1.0 / obs. 84872460
Ischaemum aristatum, photographed by 葉子
fig. d 葉子, CC0 1.0 / obs. 84872455

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
Royal Botanic Gardens, Kew
Accession
K002383333
Filed as
Ischaemum aristatum L.
Det. by
Frichen
Collected
Thomson, G.
Origin
IN
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 16 botanical countries

Regions where Ischaemum aristatum is native: China North-Central, China South-Central, China Southeast, Hainan, Japan, Korea, Manchuria, Nansei-shoto, Taiwan, Borneo, Solomon Is., Vietnam, Caroline Is., Fiji, Niue, Samoa China North-CentralChina South-CentralChina SoutheastHainanJapanManchuriaTaiwanBorneoSolomon Is.VietnamFiji KoreaNansei-shotoCaroline Is.NiueSamoa
Native distribution of Ischaemum aristatum, 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
China North-Central CHN ASIA-TEMPERATE
China South-Central CHC
China Southeast CHS
Hainan CHH
Japan JAP
Korea KOR
Manchuria CHM
Nansei-shoto NNS
Taiwan TAI
Caroline Is. CRL PACIFIC
Fiji FIJ
Niue NUE
Samoa SAM
Borneo BOR ASIA-TROPICAL
Solomon Is. SOL
Vietnam VIE

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 32 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 9.7 °C 13.9 °C 15.5 °C
Warmest month, mean daily high 27.4 °C 29.2 °C 30.2 °C
Annual rainfall 1,349 mm 3,406 mm 4,515 mm
Rainfall in the driest quarter 146 mm 692 mm 788 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 32 research-grade observations of Ischaemum aristatum 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 33 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.

  • Andropogon corassipes Steud.
  • Andropogon crassipes Steud.
  • Andropogon imberbis Steud.
  • Andropogon incertus Steud.
  • Andropogon monastachyus Steud.
  • Ischaemum aristatum subsp. glaucum (Honda) T.Koyama
  • Ischaemum aristatum subsp. imberbe (Retz.) Matsum. & Hayata
  • Ischaemum aristatum var. aristatum
  • Ischaemum aristatum var. crassipes (Steud.) Yonek.
  • Ischaemum aristatum var. glaucum (Honda) T.Koyama
  • Ischaemum aristatum var. imberbe (Retz.) Hayata
  • Ischaemum aristatum var. momiyamae (Honda) P.S.Hsu
  • Ischaemum aristatum var. momiyamae (Honda) Hsu
  • Ischaemum crassipes (Steud.) Thell.
  • Ischaemum crassipes f. aristatum (Nakai) Ohwi
  • Ischaemum crassipes var. aristatum Nakai
  • Ischaemum crassipes var. formosanum (Hack.) Nakai
  • Ischaemum crassipes var. glaucum Honda
  • Ischaemum crassipes var. hainanense Keng
  • Ischaemum crassipes var. hondae (Matsum.) Nakai
  • Ischaemum crassipes var. momiyamae Honda
  • Ischaemum crassipes var. pilipes H.R.Zhao
  • Ischaemum guangxiense H.R.Zhao
  • Ischaemum hondae Matsuda

and 9 more.

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.