Eragrostis ferruginea(Thunb.) P.Beauv.

WFO wfo-0000867740 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 7 observations

This species has been photographed under an open licence only 7 times, 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.

Eragrostis ferruginea, photographed by Jacy Chen
fig. a Jacy Chen, CC BY 4.0 / 2021-10-10 / obs. 163432889
Eragrostis ferruginea, photographed by Jacy Chen
fig. b Jacy Chen, CC BY 4.0 / obs. 105854325
Eragrostis ferruginea, photographed by Jacy Chen
fig. c Jacy Chen, CC BY 4.0 / obs. 75924602
Eragrostis ferruginea, photographed by harum.koh
fig. d harum.koh, CC BY-SA 4.0 / obs. 2607893
Eragrostis ferruginea, photographed by harum.koh
fig. e harum.koh, CC BY-SA 4.0 / obs. 2562979
Eragrostis ferruginea, photographed by harum.koh
fig. f harum.koh, CC BY-SA 4.0 / obs. 1288226
Eragrostis ferruginea, photographed by Jacy Chen
fig. g Jacy Chen, CC BY 4.0 / obs. 163432910
Eragrostis ferruginea, photographed by WATANABE Hitoshi 渡辺仁
fig. h WATANABE Hitoshi 渡辺仁, CC BY 4.0 / obs. 98508064

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 3530416
Filed as
Eragrostis ferruginea (Thunb.) P.Beauv.
Det. by
Soreng, Robert J., Research Associate (BOT), Smithsonian Institution - National Museum of Natural History (UNITED STATES)
Collected
Tibet-MacArthur, J. Wen, Z. Nie, R. J. Soreng, K. Rankin, L. Yue, M. Wang & X. Yue 2007-08-06
Origin
CN
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 13 botanical countries

Regions where Eragrostis ferruginea is native: China North-Central, China South-Central, China Southeast, Japan, Korea, Taiwan, Tibet, Assam, East Himalaya, Laos, Myanmar, Nepal, Vietnam China North-CentralChina South-CentralChina SoutheastJapanTaiwanTibetAssamEast HimalayaLaosMyanmarNepalVietnam Korea
Native distribution of Eragrostis ferruginea, 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
Japan JAP
Korea KOR
Taiwan TAI
Tibet CHT
Assam ASS ASIA-TROPICAL
East Himalaya EHM
Laos LAO
Myanmar MYA
Nepal NEP
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 50 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -7.9 °C 1.2 °C 10.2 °C
Warmest month, mean daily high 21.7 °C 27.5 °C 30.8 °C
Annual rainfall 733 mm 1,509 mm 4,456 mm
Rainfall in the driest quarter 30 mm 164 mm 682 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 50 research-grade observations of Eragrostis ferruginea 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.

  • Eragrostis ferruginea var. fujianensis N.X.Zhao & X.T.Ma
  • Eragrostis mairei Hack.
  • Eragrostis mairei var. eglandis B.S.Sun & S.Wang
  • Eragrostis orientalis Trin.
  • Eragrostis pogonia Steud.
  • Poa barbata Thunb.
  • Poa ferruginea Thunb.

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.