Juncaceae
Thread rush
Juncus filiformis
- Family
- Juncaceae
- Genus
- Juncus
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Common names
By language (21)
- Belarusian
- Сітнік ніткападобны
- Bulgarian
- Нишковидна дзука
- Catalan
- Jonc filiforme
- Chinese
- 丝状灯心草, 絲狀燈心草, 丝状灯芯草
- Czech
- Sítina niťovitá
- Dutch
- Draadrus, Draad-Rus
- English
- Thread rush
- Estonian
- Niitluga
- Finnish
- Jouhivihvilä
- French
- Jonc filiforme
- German
- Faden-Binse, Faden-Simse, Jonc filiforme
- hsb
- Ćeńka syćina
- Latvian
- Pavedienu donis
- Lithuanian
- Jonc filiforme
- Macedonian
- Кончеста ситка
- Norwegian Bokmål
- Trådsiv
- Polish
- Sit cienki
- Slovenian
- Nitasto ločje
- Swedish
- Trådtåg, Jonc filiforme
- Ukrainian
- Ситник нитковидний
- Welsh
- Brwynen edafeddog
Synonyms
- Juncus balticus f. pusillus (Fr.) Neuman
- Juncus filiformis f. flaccidus Borza & Nyár.
- Juncus filiformis f. flaccidus Zapał.
- Juncus filiformis f. prostratus Freiberg
- Juncus filiformis f. pusillus (Fr.) Neuman
- Juncus filiformis lus. prolifer Asch. & Graebn.
- Juncus filiformis unranked transsilvanicus (Schur) Asch. & Graebn.
- Juncus filiformis var. aphyllus E.Mey.
- Juncus filiformis var. foliatus E.Mey.
- Juncus filiformis var. kulczynskii Racib.
- Juncus filiformis var. pluriflorus Krylov
- Juncus filiformis var. pusillus Fr.
- Juncus filiformis var. transsilvanicus (Schur) Nyman
- Juncus transsilvanicus Schur
- Juncus trichodes Steud.
Flowers
- In flower
- June to August (from 22 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Graminoid
- Lifespan
- Perennial
- In the US and Canada
- Alaska: native, Canada: native, Greenland: native, Lower 48 states: native, St. Pierre and Miquelon: native
Photos
FlowerPhoto: Natalia Kazakova, CC BY 4.0, from iNaturalist 
FlowerPhoto: Fyodor Pudovikov, CC BY 4.0, from iNaturalist 
FlowerPhoto: Fyodor Pudovikov, CC BY 4.0, from iNaturalist 
FlowerPhoto: Георгий Виноградов (Georgy Vinogradov), CC BY 4.0, from iNaturalist 
Photo: Matti Virtala, CC0, from Wikimedia Commons 
Photo: Юлия, CC BY 4.0, from iNaturalist 
Photo: Franz Xaver, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Юлия, CC BY 4.0, from iNaturalist 
Photo: Franz Xaver, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Sam Turner, CC BY 4.0, from iNaturalist 
Photo: Étienne Lacroix-Carignan, CC0, from iNaturalist 
Photo: Ivar Leidus, CC BY-SA 3.0, from Wikimedia Commons
More in Juncus
- Common rushJuncus effususJuncaceae
- Toad rushJuncus bufoniusJuncaceae
- Compact rushJuncus conglomeratusJuncaceae
- Jointed rushJuncus articulatusJuncaceae
- Saltmarsh rushJuncus gerardiJuncaceae
- Spiny rushJuncus acutusJuncaceae
- Baltic rushJuncus balticusJuncaceae
- Poverty rushJuncus tenuisJuncaceae
- Leafybract dwarf rushJuncus capitatusJuncaceae
- Mosquito rushJuncus squarrosusJuncaceae
- Roundfruit rushJuncus compressusJuncaceae
- European meadow rushJuncus inflexusJuncaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.