Cenchrus echinatusL.

southern sandbur

WFO wfo-0000858591 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Cenchrus echinatus, photographed by Augustin Soulard
fig. a Augustin Soulard, CC BY 4.0 / 2022-06-03 / obs. 203733186

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
933637
Filed as
Cenchrus echinatus L.
Det. by
S. A. Mori 2007-01-01
Collected
S. A. Mori 2007-03-08
Origin
BQ
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 71 botanical countries

Regions where Cenchrus echinatus is native: Alabama, Arizona, Arkansas, California, District of Columbia, Florida, Georgia, Kansas, Kentucky, Louisiana, Maryland, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mississippi, Nevada, New Mexico, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, Argentina Northeast, Argentina Northwest, Aruba, Bahamas, Belize, Bermuda, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Cayman Is., Central American Pacific Is., Chile North, Chile South, Colombia, Costa Rica, Cuba, Desventurados Is., Dominican Republic, Ecuador, El Salvador, French Guiana, Galápagos, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Netherlands Antilles, Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Southwest Caribbean, Suriname, Trinidad-Tobago, Turks-Caicos Is., Uruguay, Venezuela, Venezuelan Antilles, Windward Is. AlabamaArizonaArkansasCaliforniaFloridaGeorgiaKansasKentuckyLouisianaMarylandMexico CentralMexico GulfMexico NortheastMexico NorthwestMexico SoutheastMexico SouthwestMississippiNevadaNew MexicoNorth CarolinaOklahomaSouth CarolinaTennesseeTexasVirginiaArgentina NortheastArgentina NorthwestBelizeBoliviaBrazil NorthBrazil NortheastBrazil SouthBrazil SoutheastBrazil West-CentralCentral American Pacific Is.Chile NorthChile SouthColombiaCosta RicaCubaDominican RepublicEcuadorEl SalvadorFrench GuianaGuatemalaGuyanaHaitiHondurasJamaicaNicaraguaPanamáParaguayPeruPuerto RicoSouthwest CaribbeanSurinameTrinidad-TobagoUruguayVenezuela District of ColumbiaArubaBahamasBermudaCayman Is.GalápagosLeeward Is.Netherlands AntillesTurks-Caicos Is.Venezuelan AntillesWindward Is.
Native distribution of Cenchrus echinatus, 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
Aruba ARU
Bahamas BAH
Belize BLZ
Bermuda BER
Bolivia BOL
Brazil North BZN
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Brazil West-Central BZC
Cayman Is. CAY
Central American Pacific Is. CPI
Chile North CLN
Chile South CLS
Colombia CLM
Costa Rica COS
Cuba CUB
Desventurados Is. DSV
Dominican Republic DOM
Ecuador ECU
El Salvador ELS
French Guiana FRG
Galápagos GAL
Guatemala GUA
Guyana GUY
Haiti HAI
Honduras HON
Jamaica JAM
Leeward Is. LEE
Netherlands Antilles NLA
Nicaragua NIC
Panamá PAN
Paraguay PAR
Peru PER
Puerto Rico PUE
Southwest Caribbean SWC
Suriname SUR
Trinidad-Tobago TRT
Turks-Caicos Is. TCI
Uruguay URU
Venezuela VEN
Venezuelan Antilles VNA
Windward Is. WIN
Alabama ALA NORTHERN AMERICA
Arizona ARI
Arkansas ARK
California CAL
District of Columbia WDC
Florida FLA
Georgia GEO
Kansas KAN
Kentucky KTY
Louisiana LOU
Maryland MRY
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southeast MXT
Mexico Southwest MXS
Mississippi MSI
Nevada NEV
New Mexico NWM
North Carolina NCA
Oklahoma OKL
South Carolina SCA
Tennessee TEN
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 52 in flower of 180 examined

Proportion of examined Cenchrus echinatus in flower, by month
Month In flower Examined Share 95% interval
Jan 4 18 22% 9% to 45%
Feb 2 9 22% 6% to 55%
Mar 4 13 31% 13% to 58%
Apr 8 21 38% 21% to 59%
May 5 17 29% 13% to 53%
Jun 3 9 33% 12% to 65%
Jul 4 16 25% 10% to 50%
Aug 6 12 50% 25% to 75%
Sep 4 14 29% 12% to 55%
Oct 8 17 47% 26% to 69%
Nov 2 14 14% 4% to 40%
Dec 2 20 10% 3% to 30%

Peak flowering in Aug. Each bar is the share of Cenchrus echinatus 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. 52 of 180 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.

Where it actually grows measured, from 2,029 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 9.2 °C 15.8 °C 24.0 °C
Warmest month, mean daily high 25.9 °C 29.8 °C 35.2 °C
Annual rainfall 608 mm 1,528 mm 2,991 mm
Rainfall in the driest quarter 7 mm 113 mm 409 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 2,029 research-grade observations of Cenchrus echinatus 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 15 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.

  • Cenchrus brevisetus E.Fourn. ex Hemsl.
  • Cenchrus brevisetus E.Fourn.
  • Cenchrus cavanillesii Tausch
  • Cenchrus crinitus Mez
  • Cenchrus echinatus var. brevisetus (E.Fourn. ex Hemsl.) Scribn.
  • Cenchrus echinatus var. glabratus F.Br.
  • Cenchrus echinatus var. hillebrandianus (Hitchc.) F.Br.
  • Cenchrus echinatus var. morisonii Kuntze
  • Cenchrus echinatus var. pennisetoides F.Br.
  • Cenchrus hillebrandianus Hitchc.
  • Cenchrus insularis Scribn.
  • Cenchrus lechleri Steud.
  • Cenchrus macrocarpus Ledeb. ex Steud.
  • Cenchrus pungens Kunth
  • Panicastrella muricata Moench

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.