Edrastima uniflora(L.) Raf.

clustered mille graines

WFO wfo-0000947923 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Edrastima uniflora, photographed by John Kees
fig. a John Kees, CC0 1.0 / 2021-10-03 / obs. 161305737
Edrastima uniflora, photographed by Eric Knight
fig. b Eric Knight, CC BY 4.0 / obs. 158196654
Edrastima uniflora, photographed by mark-groeneveld
fig. c mark-groeneveld, CC BY 4.0 / obs. 108664459
Edrastima uniflora, photographed by Valerie Anderson
fig. d Valerie Anderson, CC BY 4.0 / obs. 27382452
Edrastima uniflora, photographed by Alison Northup
fig. e Alison Northup, CC BY 4.0 / obs. 25507479
Edrastima uniflora, photographed by Douglas Goldman
fig. f Douglas Goldman, CC BY-SA 4.0 / obs. 177838004
Edrastima uniflora, photographed by Nash Turley
fig. g Nash Turley, CC BY 4.0 / obs. 101967692
Edrastima uniflora, photographed by Nash Turley
fig. h Nash Turley, CC BY 4.0 / obs. 100583773

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 26 botanical countries

Regions where Edrastima uniflora is native: Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Illinois, Kentucky, Louisiana, Maryland, Mississippi, Missouri, New Jersey, New York, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, Argentina Northeast, Brazil Southeast, Cuba, Jamaica, Paraguay, Puerto Rico AlabamaArkansasFloridaGeorgiaIllinoisKentuckyLouisianaMarylandMississippiMissouriNew JerseyNew YorkNorth CarolinaOklahomaSouth CarolinaTennesseeTexasVirginiaArgentina NortheastBrazil SoutheastCubaJamaicaParaguayPuerto Rico DelawareDistrict of Columbia
Native distribution of Edrastima uniflora, 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
Alabama ALA NORTHERN AMERICA
Arkansas ARK
Delaware DEL
District of Columbia WDC
Florida FLA
Georgia GEO
Illinois ILL
Kentucky KTY
Louisiana LOU
Maryland MRY
Mississippi MSI
Missouri MSO
New Jersey NWJ
New York NWY
North Carolina NCA
Oklahoma OKL
South Carolina SCA
Tennessee TEN
Texas TEX
Virginia VRG
Argentina Northeast AGE SOUTHERN AMERICA
Brazil Southeast BZL
Cuba CUB
Jamaica JAM
Paraguay PAR
Puerto Rico PUE

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 34 in flower of 46 examined

Peak flowering in May. Each bar is the share of Edrastima uniflora 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. 34 of 46 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 8 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 295 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -1.2 °C 10.8 °C 16.7 °C
Warmest month, mean daily high 29.1 °C 31.7 °C 33.8 °C
Annual rainfall 1,146 mm 1,375 mm 1,665 mm
Rainfall in the driest quarter 144 mm 204 mm 328 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 295 research-grade observations of Edrastima uniflora 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 17 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.

  • Anistelma glomerata (Michx.) Raf.
  • Hedyotis auricularia Walter
  • Hedyotis fasciculata Bertol.
  • Hedyotis glomerata (Michx.) Elliott
  • Hedyotis nigricans var. fasciculata (Bertol.) W.H.Lewis
  • Hedyotis pilosa Phil. ex Benth. & Hook.f.
  • Hedyotis serpylloides Lam.
  • Hedyotis uniflora (L.) Lam.
  • Hedyotis uniflora var. fasciculata (Bertol.) W.H.Lewis
  • Hedyotis virginica Spreng.
  • Oldenlandia fasciculata (Bertol.) Small
  • Oldenlandia glomerata Michx.
  • Oldenlandia littoralis C.Mohr
  • Oldenlandia uniflora L.
  • Oldenlandia uniflora var. fasciculata (Bertol.) D.B.Ward
  • Stelmanis glomerata (Michx.) Raf.
  • Stelmotis glomerata (Michx.) Raf.

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. USDA PLANTS Database. common name, checklist symbol OLUN. public domain. 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.