Stenotaphrum secundatum(Walter) Kuntze

St. Augustine grass

WFO wfo-0000901635 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Stenotaphrum secundatum, photographed by Tony Rebelo
fig. a Tony Rebelo, CC BY-SA 4.0 / 2022-06-10 / obs. 205879309
Stenotaphrum secundatum, photographed by Tony Rebelo
fig. b Tony Rebelo, CC BY-SA 4.0 / obs. 205560070
Stenotaphrum secundatum, photographed by Tony Rebelo
fig. c Tony Rebelo, CC BY-SA 4.0 / obs. 204720198
Stenotaphrum secundatum, photographed by Kevin Faccenda
fig. d Kevin Faccenda, CC BY 4.0 / obs. 204034869
Stenotaphrum secundatum, photographed by Kevin Faccenda
fig. e Kevin Faccenda, CC BY 4.0 / obs. 204033400
Stenotaphrum secundatum, photographed by Scott Ward
fig. f Scott Ward, CC BY 4.0 / obs. 202496439
Stenotaphrum secundatum, photographed by Leon Perrie
fig. g Leon Perrie, CC BY 4.0 / obs. 192628538
Stenotaphrum secundatum, photographed by linkie
fig. h linkie, CC BY 4.0 / obs. 195424731

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 59 botanical countries

Regions where Stenotaphrum secundatum is native: Benin, Cameroon, Chad, Congo, DR Congo, Equatorial Guinea, Gabon, Ghana, Gulf of Guinea Is., Ivory Coast, Liberia, Nigeria, Senegal, Sierra Leone, Togo, Alabama, Florida, Georgia, Louisiana, Mexico Gulf, Mexico Southeast, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, Argentina Northeast, Argentina Northwest, Bahamas, Belize, Bermuda, Bolivia, Brazil Northeast, Brazil South, Brazil Southeast, Cayman Is., Chile Central, Chile North, Chile South, Costa Rica, Cuba, Dominican Republic, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Southwest Caribbean, Suriname, Trinidad-Tobago, Uruguay, Windward Is. BeninCameroonChadCongoDR CongoEquatorial GuineaGabonGhanaGulf of Guinea Is.Ivory CoastLiberiaNigeriaSenegalSierra LeoneTogoAlabamaFloridaGeorgiaLouisianaMexico GulfMexico SoutheastMississippiNorth CarolinaSouth CarolinaTennesseeVirginiaArgentina NortheastArgentina NorthwestBelizeBoliviaBrazil NortheastBrazil SouthBrazil SoutheastChile CentralChile NorthChile SouthCosta RicaCubaDominican RepublicFrench GuianaGuatemalaGuyanaHaitiHondurasJamaicaNicaraguaPanamáParaguayPeruPuerto RicoSouthwest CaribbeanSurinameTrinidad-TobagoUruguay BahamasBermudaCayman Is.Leeward Is.Windward Is.
Native distribution of Stenotaphrum secundatum, 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 Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Cayman Is. CAY
Chile Central CLC
Chile North CLN
Chile South CLS
Costa Rica COS
Cuba CUB
Dominican Republic DOM
French Guiana FRG
Guatemala GUA
Guyana GUY
Haiti HAI
Honduras HON
Jamaica JAM
Leeward Is. LEE
Nicaragua NIC
Panamá PAN
Paraguay PAR
Peru PER
Puerto Rico PUE
Southwest Caribbean SWC
Suriname SUR
Trinidad-Tobago TRT
Uruguay URU
Windward Is. WIN
Benin BEN AFRICA
Cameroon CMN
Chad CHA
Congo CON
DR Congo ZAI
Equatorial Guinea EQG
Gabon GAB
Ghana GHA
Gulf of Guinea Is. GGI
Ivory Coast IVO
Liberia LBR
Nigeria NGA
Senegal SEN
Sierra Leone SIE
Togo TOG
Alabama ALA NORTHERN AMERICA
Florida FLA
Georgia GEO
Louisiana LOU
Mexico Gulf MXG
Mexico Southeast MXT
Mississippi MSI
North Carolina NCA
South Carolina SCA
Tennessee TEN
Virginia VRG

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 62 in flower of 173 examined

Peak flowering in Jun. Each bar is the share of Stenotaphrum secundatum 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. 62 of 173 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 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.

Also published as 13 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.

  • Diastemanthe platystachys Steud.
  • Ischaemum secundatum Walter
  • Rottboellia paleacea Steud. ex Döll
  • Rottboellia stolonifera Poir.
  • Rottboellia tripsacoides Lam.
  • Stenotaphrum americanum Schrank
  • Stenotaphrum dimidiatum var. americanum (Schrank) Hack.
  • Stenotaphrum dimidiatum var. secundatum (Walter) Domin
  • Stenotaphrum glabrum var. americanum (Schrank) Döll
  • Stenotaphrum glabrum var. glabrum
  • Stenotaphrum sarmentosum Nees
  • Stenotaphrum secundatum var. secundatum
  • Stenotaphrum secundatum var. variegatum Hitchc.

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.