Bolboschoenus fluviatilis

Family (Traditional)Cyperaceae
Species:Bolboschoenus fluviatilis (Torr.) Sojak
Common NameRiver Bulrush
Growth Habitgraminoid
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: DRU; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: graminoid; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: June; Reproductive Phenology: July; Reproductive Phenology: August; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Rank: 3-ranked; Leaf Type: grass-like; Leaf Venation: parallel; Leaflet Margins: entire; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: Brown (incl. Maroon); Fruit Dehiscence: No; Fruit Type: Achene; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: N/A; Perianth Present: No; Petal Fusion: N/A; Pistil Complexity: Compound; Pistil Number: 1; Placentation Type: Basal; Sepal Fusion: N/A; Sepal Number: 0; Sporangium Arrangement: N/A; Stamen Number: 3; Tepal Fusion: N/A; Tepal Number: 0
C value 6
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** Not applicable or data not available.

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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
Schoenoplectus fluviatilis Schoenoplectus fluviatilis (Torr.) M.T. Strong
Scirpus maritimus var. fluviatilis Scirpus maritimus var. fluviatilis

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: Ballard (KY), Bell (KY), Fulton (KY), Henderson (KY), Henry (TN), Humphreys (TN)

Herbaria represented by specimen data listed below: APSC, BEREA

Range of years during which specimens were collected: 1979 - 1991

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
APSC0061670 Henderson Kentucky
Bolboschoenus fluviatilis
APSC0037772 Henry Tennessee
Bolboschoenus fluviatilis
APSC0037771 Henry Tennessee 22 May 1991 Edward Chester
Bolboschoenus fluviatilis
APSC0037768 Fulton Kentucky
Bolboschoenus fluviatilis
APSC0065972 Fulton Kentucky
Bolboschoenus fluviatilis
APSC0061671 Henderson Kentucky
Bolboschoenus fluviatilis
APSC0037770 Humphreys Tennessee
Bolboschoenus fluviatilis
N/A Fulton Kentucky 11 Jul 1979 Raymond Athey
Bolboschoenus fluviatilis
APSC0092477 Ballard Kentucky
Bolboschoenus fluviatilis
BEREA003200 Bell Kentucky Ralph L. Thompson
Bolboschoenus fluviatilis
BEREA003199 Bell Kentucky Ralph L. Thompson
Bolboschoenus fluviatilis
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