Paspalum distichum

ClassificationMonocots
FamilyPoaceae
Family (Traditional)Poaceae
GenusPaspalum
Species:Paspalum distichum L.
Common NameKnotgrass
Growth Habitgraminoid
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: GILES; Natural Area Presence: LC; Duration: Perennial; General Ecology: Mudflat; General Ecology: Terrestrial; Growth Habit: graminoid; Moisture Requirements: Mesic-Hydric; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: May; Reproductive Phenology: June; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Reproductive Phenology: November; Leaf Arrangement: alternate; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; 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: No; Fruit Type: Caryopsis; Fruit Type: Grain; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Superior; Overall Flower Symmetry: N/A; Perianth Present: No; Placentation Type: Parietal; Placentation Type: Basal; Sporangium Arrangement: N/A
C value 7
StatusNative; AGCP (OBL), EMP (FACW) (NWPL); TN[SNR] KY[S3S4] (State Rank); G5 (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Currently no photos are available for this plant.

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
Ecoregions
  • 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

Synonyms

SynonymFull Citation
Anastrophus paspaloides Anastrophus paspaloides (Michx.) Nash
Digitaria disticha Digitaria disticha (L.) Fiori & Paol.
Digitaria paspalodes Digitaria paspalodes Michx.
Digitaria paspaloides Digitaria paspaloides Michx.
Dimorphostachys oaxacensis Dimorphostachys oaxacensis (Steud.) E. Fourn. ex Hemsl.
Milium distichum Milium distichum (L.) Muhl.
Milium paspalodes Milium paspalodes (Michx.) Elliott
Panicum fernandezianum Panicum fernandezianum Colla
Panicum paspaliforme Panicum paspaliforme J. Presl
Panicum polyrrhizum Panicum polyrrhizum J. Presl
Paspalum bracteatum Paspalum bracteatum Dufour ex Kunth
Paspalum chepica Paspalum chepica Steud.
Paspalum distichum subsp. paspalodes Paspalum distichum subsp. paspalodes (Michx.) Thell.
Paspalum distichum var. digitaria Paspalum distichum var. digitaria (Poir.) Hack.
Paspalum distichum var. indutum Paspalum distichum var. indutum Shinners
Paspalum distinctum Paspalum distinctum L.
Paspalum elliottii Paspalum elliottii S. Watson
Paspalum fernandezianum Paspalum fernandezianum Colla
Paspalum michauxianum Paspalum michauxianum Kunth
Paspalum oaxacense Paspalum oaxacense Steud.
Paspalum paspalodes Paspalum paspalodes
Paspalum paspalodes var. paspalodes Paspalum paspalodes var. paspalodes (Michx.) Scribn.
Paspalum paspaloides Paspalum paspaloides (Michx.) Scribn.
Paspalum vaginatum var. pubescens Paspalum vaginatum var. pubescens Döll

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: Calloway (KY), Fayette (KY), Fulton (KY), Livingston (KY), Lyon (KY), Trigg (KY), Davidson (TN), Henry (TN), Humphreys (TN), Shelby (TN), Stewart (TN), Wilson (TN)

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

Range of years during which specimens were collected: 1962 - 1997

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used
TENN-V-0166264 Shelby Tennessee
TENN
Paspalum distichum
TENN-V-0017912 Trigg Kentucky
TENN
Paspalum distichum
TENN-V-0017927 Fulton Kentucky
TENN
Paspalum distichum
APSC0043135 Humphreys Tennessee
APSC
Paspalum distichum
TENN-V-0017926 Livingston Kentucky
TENN
Paspalum distichum
TENN-V-0210025 Davidson Tennessee A. Gattinger
5		 TENN
Paspalum distichum
APSC0043142 Stewart Tennessee
APSC
Paspalum distichum
APSC0043149 Trigg Kentucky 06 Sep 1984 Edward Chester
 APSC
Paspalum distichum
APSC0059373 Stewart Tennessee
APSC
Paspalum distichum
APSC0043136 Henry Tennessee 05 Aug 1989 Edward Chester
 APSC
Paspalum distichum
APSC0043146 Trigg Kentucky 12 Sep 1986 Edward Chester
 APSC
Paspalum distichum
MEM000205 Shelby Tennessee 12 Jun 1962 Jack L. Tayloe
298		 MEM
Paspalum distichum
APSC0043139 Lyon Kentucky 14 Jul 1988 Edward Chester
 APSC
Paspalum distichum
APSC0043147 Stewart Tennessee
APSC
Paspalum distichum
APSC0043144 Stewart Tennessee
APSC
Paspalum distichum
TENN-V-0017925 Lyon Kentucky
TENN
Paspalum distichum
APSC0064830 Wilson Tennessee
APSC
Paspalum distichum
APSC0043148 Lyon Kentucky
APSC
Paspalum distichum
31234100152535 Lyon Kentucky 12 Aug 1979 Raymond Athey
4413		 EKY
Paspalum distichum
31234100152501 Fayette Kentucky 04 Jul 1997 Timothy J. Weckman
3586		 EKY
Paspalum distichum
31234100152519 Calloway Kentucky 15 Sep 1982 Raymond Athey
4689		 EKY
Paspalum distichum
31234100152527 Fulton Kentucky 18 Jul 1972 Raymond Athey
1962		 EKY
Paspalum distichum
31234100185394 Livingston Kentucky 12 Jul 1994 Gary W. Libby
396		 EKY
Paspalum distichum
31973000022988 Livingston Kentucky 12 Jul 1994 Libby, Gary
396		 KNK
Paspalum distichum
31234100152543 Trigg Kentucky 28 Sep 1980 Raymond Athey
4573		 EKY
Paspalum distichum
APSC0043141 Stewart Tennessee
APSC
Paspalum distichum
APSC0043140 Trigg Kentucky 06 Jul 1989 Susan Holt
 APSC
Paspalum distichum
APSC0043143 Lyon Kentucky 16 Jul 1986 Edward Chester
 APSC
Paspalum distichum
TENN-V-0244143 Stewart Tennessee
TENN
Paspalum distichum
MDKY00005039 Fulton Kentucky
MDKY
Paspalum distichum
TENN-V-0017911 Lyon Kentucky
TENN
Paspalum distichum
TENN-V-0017910 Livingston Kentucky
TENN
Paspalum distichum
APSC0043137 Livingston Kentucky 17 Oct 1977 Raymond Athey
 APSC
Paspalum distichum
APSC0069325 Livingston Kentucky 17 Oct 1977 Raymond Athey
 APSC
Paspalum distichum
APSC0043145 Lyon Kentucky
APSC
Paspalum distichum
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