Loudetia simplex(Nees) C.E.Hubb.

common russet grass

WFO wfo-0000878679 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Loudetia simplex, photographed by bat (Maria Vorontsova)
fig. a bat (Maria Vorontsova), CC0 1.0 / 2022-03-05 / obs. 187892024

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
01158713
Filed as
Loudetia simplex (Nees) C.E.Hubb.
Det. by
B.-E. Van Wyk 1999-01-01
Collected
P. C. Zietsman 1999-01-28
Origin
ZA
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 37 botanical countries

Regions where Loudetia simplex is native: Angola, Benin, Burkina, Burundi, Cameroon, Cape Provinces, Central African Republic, Chad, Congo, DR Congo, Eswatini, Ethiopia, Free State, Gabon, Gambia, Ghana, Guinea, Ivory Coast, Kenya, KwaZulu-Natal, Liberia, Madagascar, Malawi, Mali, Mozambique, Niger, Nigeria, Northern Provinces, Rwanda, Senegal, Sierra Leone, Sudan-South Sudan, Tanzania, Togo, Uganda, Zambia, Zimbabwe AngolaBeninBurkinaBurundiCameroonCape ProvincesCentral African RepublicChadCongoDR CongoEswatiniEthiopiaFree StateGabonGambiaGhanaGuineaIvory CoastKenyaKwaZulu-NatalLiberiaMadagascarMalawiMaliMozambiqueNigerNigeriaNorthern ProvincesRwandaSenegalSierra LeoneSudan-South SudanTanzaniaTogoUgandaZambiaZimbabwe
Native distribution of Loudetia simplex, 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.
RegionTDWG codeContinent
Angola ANG AFRICA
Benin BEN
Burkina BKN
Burundi BUR
Cameroon CMN
Cape Provinces CPP
Central African Republic CAF
Chad CHA
Congo CON
DR Congo ZAI
Eswatini SWZ
Ethiopia ETH
Free State OFS
Gabon GAB
Gambia GAM
Ghana GHA
Guinea GUI
Ivory Coast IVO
Kenya KEN
KwaZulu-Natal NAT
Liberia LBR
Madagascar MDG
Malawi MLW
Mali MLI
Mozambique MOZ
Niger NGR
Nigeria NGA
Northern Provinces TVL
Rwanda RWA
Senegal SEN
Sierra Leone SIE
Sudan-South Sudan SUD
Tanzania TAN
Togo TOG
Uganda UGA
Zambia ZAM
Zimbabwe ZIM

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 206 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 0.5 °C 4.4 °C 11.0 °C
Warmest month, mean daily high 22.1 °C 25.6 °C 29.1 °C
Annual rainfall 634 mm 887 mm 2,082 mm
Rainfall in the driest quarter 12 mm 19 mm 75 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 206 research-grade observations of Loudetia simplex 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 29 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.

  • Arundinella hildebrandtii Mez
  • Arundinella simplex (Nees) Roberty
  • Arundinella stipoides Hack.
  • Loudetia camerunensis (Stapf) C.E.Hubb.
  • Loudetia elegans Hochst.
  • Loudetia madagascariensis (Baker) Bosser
  • Loudetia perrieri A.Camus
  • Loudetia pilgeriana Conert
  • Loudetia simplex subsp. stipoides (Hack.) Bosser
  • Loudetia stipoides (Hack.) Conert
  • Stipa madagascariensis Baker
  • Trichopteryx camerunensis Stapf
  • Trichopteryx elegans (A.Braun) Hack.
  • Trichopteryx elegans var. subulifolia Franch.
  • Trichopteryx elisabethvilleana De Wild.
  • Trichopteryx gracilis Peter
  • Trichopteryx incompta Franch.
  • Trichopteryx kapiriensis De Wild.
  • Trichopteryx nigritiana Stapf
  • Trichopteryx simplex (Nees) Engl.
  • Trichopteryx simplex var. crinita Stapf
  • Trichopteryx simplex var. gracilis Rendle
  • Trichopteryx simplex var. longifolia Peter
  • Trichopteryx simplex var. minor Stapf

and 5 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. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. 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.