Juncus articulatus

Family (Traditional)Juncaceae
Species:Juncus articulatus L.
Common NameJointed Rush; Jointleaf Rush
Growth Habitgraminoid
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Duration: Perennial; General Ecology: Mudflat; General Ecology: Terrestrial; Growth Habit: graminoid; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Leaf Arrangement: alternate; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Type: grass-like; Leaf Venation: parallel; Leaflet Margins: entire; Leaflet Number: 0; Base Flower Color: Brown (incl. Maroon); Base Flower Color: Green; Fruit Dehiscence: Yes; Fruit Type: Capsule; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: Actinomorphic; Perianth Present: Yes; Sporangium Arrangement: N/A
C value 4
StatusNative; AGCP (OBL), EMP (OBL) (NWPL); KY[S2S3] (State Rank); G5 (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display the its name. Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

  • State Boundaries
  • Counties
  • Counties - Species Present
  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim


SynonymFull Citation
Juncus articulatus var. obtusatus Juncus articulatus var. obtusatus Engelm.
Luzula hyperborea var. latifolia Luzula hyperborea var. latifolia (Kjellm.) B. Boivin

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Carter (KY), Elliott (KY), Kenton (KY), Pendleton (KY), Perry (KY), Rowan (KY), Wolfe (KY)

Herbaria represented by specimen data listed below: APSC, BEREA, EKY, KNK, MDKY

Range of years during which specimens were collected: -

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31973000003952 Pendleton Kentucky Whitson, Maggie (Mary)
Juncus articulatus
31973000014394 Perry Kentucky
Juncus articulatus
MDKY00005474 Rowan Kentucky
Juncus articulatus
MDKY00005473 Rowan Kentucky
Juncus articulatus
MDKY00005471 Carter Kentucky
Juncus articulatus
MDKY00005472 Rowan Kentucky
Juncus articulatus
MDKY00005475 Rowan Kentucky
Juncus articulatus
APSC0101343 Wolfe Kentucky
Juncus articulatus
31234100097987 Elliott Kentucky Allison W. Cusick
Juncus articulatus
BEREA004735 Kenton Kentucky
Juncus articulatus
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Plant Photos

Juncus articulatus - Shawn Krosnick
Juncus articulatus - Shawn Krosnick
Juncus articulatus - Shawn Krosnick
Juncus articulatus - Shawn Krosnick