Sporobolus indicus(L.) R.Br.

smut grass

WFO wfo-0000901192 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Sporobolus indicus, photographed by chiuluan
fig. a chiuluan, CC BY 4.0 / 2022-05-09 / obs. 196306459

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.

Native range 52 botanical countries

Regions where Sporobolus indicus is native: Alabama, Florida, Georgia, Louisiana, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mississippi, North Carolina, South Carolina, Texas, Virginia, Argentina Northeast, Argentina Northwest, Bahamas, Belize, Bermuda, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Chile Central, Chile North, Chile South, Colombia, Costa Rica, Cuba, Desventurados Is., Dominican Republic, Ecuador, El Salvador, Galápagos, Guatemala, Haiti, Honduras, Jamaica, Leeward Is., Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Trinidad-Tobago, Turks-Caicos Is., Uruguay, Venezuela, Windward Is. AlabamaFloridaGeorgiaLouisianaMexico CentralMexico GulfMexico NortheastMexico NorthwestMexico SoutheastMexico SouthwestMississippiNorth CarolinaSouth CarolinaTexasVirginiaArgentina NortheastArgentina NorthwestBelizeBoliviaBrazil NorthBrazil NortheastBrazil SouthBrazil SoutheastBrazil West-CentralChile CentralChile NorthChile SouthColombiaCosta RicaCubaDominican RepublicEcuadorEl SalvadorGuatemalaHaitiHondurasJamaicaNicaraguaPanamáParaguayPeruPuerto RicoTrinidad-TobagoUruguayVenezuela BahamasBermudaGalápagosLeeward Is.Turks-Caicos Is.Windward Is.
Native distribution of Sporobolus indicus, 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
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Bahamas BAH
Belize BLZ
Bermuda BER
Bolivia BOL
Brazil North BZN
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Brazil West-Central BZC
Chile Central CLC
Chile North CLN
Chile South CLS
Colombia CLM
Costa Rica COS
Cuba CUB
Desventurados Is. DSV
Dominican Republic DOM
Ecuador ECU
El Salvador ELS
Galápagos GAL
Guatemala GUA
Haiti HAI
Honduras HON
Jamaica JAM
Leeward Is. LEE
Nicaragua NIC
Panamá PAN
Paraguay PAR
Peru PER
Puerto Rico PUE
Trinidad-Tobago TRT
Turks-Caicos Is. TCI
Uruguay URU
Venezuela VEN
Windward Is. WIN
Alabama ALA NORTHERN AMERICA
Florida FLA
Georgia GEO
Louisiana LOU
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southeast MXT
Mexico Southwest MXS
Mississippi MSI
North Carolina NCA
South Carolina SCA
Texas TEX
Virginia VRG

Not drawn on the map: Desventurados Is.. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

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.

Flowering 64 in flower of 110 examined

Proportion of examined Sporobolus indicus in flower, by month
Month In flower Examined Share 95% interval
Jan 2 6 33% 10% to 70%
Feb 4 4 too few examined
Mar 2 2 too few examined
Apr 8 11 73% 43% to 90%
May 9 13 69% 42% to 87%
Jun 3 4 too few examined
Jul 4 7 57% 25% to 84%
Aug 11 16 69% 44% to 86%
Sep 4 7 57% 25% to 84%
Oct 7 12 58% 32% to 81%
Nov 7 19 37% 19% to 59%
Dec 3 9 33% 12% to 65%

Peak flowering in Apr. Each bar is the share of Sporobolus indicus observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 64 of 110 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 3 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Where it actually grows measured, from 1,424 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -0.6 °C 8.8 °C 15.6 °C
Warmest month, mean daily high 21.7 °C 29.7 °C 33.6 °C
Annual rainfall 655 mm 1,482 mm 3,488 mm
Rainfall in the driest quarter 41 mm 150 mm 406 mm

It is found where winters bring light 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 1,424 research-grade observations of Sporobolus indicus 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. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 30 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.

  • Agrostis elongata Lam.
  • Agrostis indica L.
  • Agrostis orientalis Nees
  • Agrostis tenacissima L.f.
  • Agrostis tenuissima Spreng.
  • Andropogon intortus Crantz
  • Paspalum lanceifolium Desv.
  • Paspalum parviflorum Desv.
  • Sporobolus angustus Buckley
  • Sporobolus berteroanus (Trin.) Hitchc. & Chase
  • Sporobolus exilis (Trin.) Balansa
  • Sporobolus indicus f. africanoides Jovet & Guédès
  • Sporobolus indicus f. indicus
  • Sporobolus indicus f. microspiculus Jovet & Guédès
  • Sporobolus indicus subsp. indicus
  • Sporobolus indicus var. andinus Renvoize
  • Sporobolus indicus var. exilis (Trin.) T.Koyama
  • Sporobolus indicus var. indicus
  • Sporobolus indicus var. tenacissimus (L.f.) Peter
  • Sporobolus lamarckii Ham.
  • Sporobolus orientalis Kunth
  • Sporobolus tenacissimus (L.f.) P.Beauv.
  • Vilfa angusta Buckley
  • Vilfa berteroana Trin.

and 6 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.