Lythrum hyssopifoliaL.

Grass-polygrass polyhyssop loosestrife

WFO wfo-0000366897 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Lythrum hyssopifolia, photographed by James C. Davis
fig. a James C. Davis, CC BY-SA 4.0 / 2022-05-31 / obs. 202324926
Lythrum hyssopifolia, photographed by Mary K. Hanson
fig. b Mary K. Hanson, CC BY 4.0 / obs. 201323139
Lythrum hyssopifolia, photographed by Ken-ichi Ueda
fig. c Ken-ichi Ueda, CC BY 4.0 / obs. 197677071
Lythrum hyssopifolia, photographed by joergmlpts
fig. d joergmlpts, CC BY 4.0 / obs. 194064672
Lythrum hyssopifolia, photographed by Danie Palm
fig. e Danie Palm, CC BY 4.0 / obs. 192411663
Lythrum hyssopifolia, photographed by James C. Davis
fig. f James C. Davis, CC BY-SA 4.0 / obs. 189257871
Lythrum hyssopifolia, photographed by Arnim Littek
fig. g Arnim Littek, CC BY 4.0 / obs. 185475314
Lythrum hyssopifolia, photographed by Madeleine Claire
fig. h Madeleine Claire, CC BY 4.0 / obs. 181761568

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 62 botanical countries

Regions where Lythrum hyssopifolia is native: Algeria, Azores, Canary Is., Chad, Egypt, Ethiopia, Libya, Madeira, Morocco, Senegal, Socotra, Somalia, Tunisia, Cyprus, East Aegean Is., Iran, Iraq, Kazakhstan, Kirgizstan, Lebanon-Syria, North Caucasus, Palestine, Saudi Arabia, Tadzhikistan, Transcaucasus, Türkiye, Turkmenistan, Uzbekistan, Yemen, New South Wales, Queensland, South Australia, Tasmania, Victoria, Albania, Austria, Baleares, Belarus, Belgium, Bulgaria, Central European Russia, Corse, Czechia-Slovakia, East European Russia, France, Germany, Greece, Hungary, Italy, Kriti, Krym, NW. Balkan Pen., Poland, Portugal, Romania, Sardegna, Sicilia, South European Russia, Spain, Switzerland, Türkiye-in-Europe, Ukraine AlgeriaChadEgyptEthiopiaLibyaMoroccoSenegalSomaliaTunisiaCyprusEast Aegean Is.IranIraqKazakhstanKirgizstanLebanon-SyriaNorth CaucasusPalestineSaudi ArabiaTadzhikistanTranscaucasusTürkiyeTurkmenistanUzbekistanYemenNew South WalesQueenslandSouth AustraliaTasmaniaVictoriaAlbaniaAustriaBelarusBelgiumBulgariaCentral European RussiaCorseCzechia-SlovakiaEast European RussiaFranceGermanyGreeceHungaryItalyKritiKrymNW. Balkan Pen.PolandPortugalRomaniaSiciliaSouth European RussiaSpainSwitzerlandTürkiye-in-EuropeUkraine AzoresCanary Is.MadeiraBalearesSardegna
Native distribution of Lythrum hyssopifolia, 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
Albania ALB EUROPE
Austria AUT
Baleares BAL
Belarus BLR
Belgium BGM
Bulgaria BUL
Central European Russia RUC
Corse COR
Czechia-Slovakia CZE
East European Russia RUE
France FRA
Germany GER
Greece GRC
Hungary HUN
Italy ITA
Kriti KRI
Krym KRY
NW. Balkan Pen. YUG
Poland POL
Portugal POR
Romania ROM
Sardegna SAR
Sicilia SIC
South European Russia RUS
Spain SPA
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
Cyprus CYP ASIA-TEMPERATE
East Aegean Is. EAI
Iran IRN
Iraq IRQ
Kazakhstan KAZ
Kirgizstan KGZ
Lebanon-Syria LBS
North Caucasus NCS
Palestine PAL
Saudi Arabia SAU
Tadzhikistan TZK
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Uzbekistan UZB
Yemen YEM
Algeria ALG AFRICA
Azores AZO
Canary Is. CNY
Chad CHA
Egypt EGY
Ethiopia ETH
Libya LBY
Madeira MDR
Morocco MOR
Senegal SEN
Socotra SOC
Somalia SOM
Tunisia TUN
New South Wales NSW AUSTRALASIA
Queensland QLD
South Australia SOA
Tasmania TAS
Victoria VIC

Not drawn on the map: Socotra. 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 487 in flower of 552 examined

Peak flowering in Jul. Each bar is the share of Lythrum hyssopifolia 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. 487 of 552 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 21 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.

  • Chabraea hyssopifolia (L.) Bubani
  • Chabraea hyssopifolia Bubani
  • Hyssopifolia parviflora Opiz
  • Lythrum adsurgens Greene
  • Lythrum glaucum Dulac
  • Lythrum hyssopifolia var. biflorum Rouy & E.G.Camus
  • Lythrum hyssopifolia var. cyprium Hadjik. & Hand
  • Lythrum hyssopifolia var. grandiflorum Clary
  • Lythrum hyssopifolia var. latifolium Rouy & E.G.Camus
  • Lythrum hyssopifolia var. nummulariifolium Rouy & E.G.Camus
  • Lythrum hyssopifolia var. pumilum Klett & Richt.
  • Lythrum hyssopifolium Thunb.
  • Lythrum hyssopifolium St.-Lag.
  • Lythrum parviflorum Bastard ex Rchb.
  • Lythrum prostratum Dombey ex Koehne
  • Lythrum tenellum Thunb.
  • Lythrum thymifolia Krock.
  • Lythrum thymifolium Lam. ex Forsyth f.
  • Pentaglossum linifolium Forssk.
  • Salicaria graefferi Steud.
  • Salicaria hyssopifolia (L.) Lam.

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.