Silphium laciniatum

ClassificationDicots
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusSilphium
Species:Silphium laciniatum L.
Common NameCompass Plant; Compassplant
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: CCNMP; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Sub-xeric; Moisture Requirements: Dry-mesic; Moisture Requirements: Mesic; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: alternate; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Petiole Type: sessile; Leaf Type: broadleaf; Leaflet Margins: dentate; Leaflet Margins: entire; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: Yellow; Carpel Number/Pistil: 1; Fruit Complexity: Simple; Fruit Dehiscence: No; Fruit Type: Cypsela; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Position: terminal; Inflorescence Types: head; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Overall Flower Symmetry: Zygomorphic; Ovules per Carpel: 1; Perianth Present: Yes; Petal Fusion: Yes; Petal Number: 5; Pistil Complexity: Simple; Pistil Number: 1; Placentation Type: Basal; Sepal Fusion: N/A; Sepal Number: N/A; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Number: N/A
C value 8
StatusNative; TN[S2] KY[S2] (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
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

No synonyms exist for this species.

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), Barren (KY), Christian (KY), Graves (KY), Grayson (KY), Jefferson (KY), McCracken (KY), Carroll (TN), Haywood (TN), Henry (TN), Montgomery (TN), Washington (TN)

Herbaria represented by specimen data listed below: APSC, EKY, ETSU, TENN, VDB

Range of years during which specimens were collected: 1971 - 1996

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
APSC0023652 Henry Tennessee 29 Jul 1990 Edward W. Chester with Bonnie Chester
90-348
APSC
Silphium laciniatum
BRIT97796 Tennessee
VDB
Silphium laciniatum
TENN-V-0226906 Carroll Tennessee
TENN
Silphium laciniatum
TENN-V-0226908 Haywood Tennessee
TENN
Silphium laciniatum
TENN-V-0226910 Henry Tennessee
TENN
Silphium laciniatum
APSC0119775 Jefferson Kentucky
APSC
Silphium laciniatum
APSC0023660 Christian Kentucky 14 Aug 1996 Edward Chester
APSC
Silphium laciniatum
APSC0119773 Graves Kentucky
APSC
Silphium laciniatum
31234100732682 McCracken Kentucky M. Evans
EKY
Silphium laciniatum
TENN-V-0226915 Montgomery Tennessee
TENN
Silphium laciniatum
TENN-V-0226909 Henry Tennessee
TENN
Silphium laciniatum
APSC0058505 Ballard Kentucky
APSC
Silphium laciniatum
APSC0023661 Christian Kentucky 24 Aug 1981 Edward W. Chester, Jim Price, K. Kio
81-729
APSC
Silphium laciniatum
BRIT97791 Tennessee
VDB
Silphium laciniatum
31234100289139 Christian Kentucky Raymond Athey
EKY
Silphium laciniatum
TENN-V-0226914 Henry Tennessee
TENN
Silphium laciniatum
TENN-V-0226907 Haywood Tennessee
TENN
Silphium laciniatum
APSC0023662 Christian Kentucky 24 Aug 1981 Edward Chester
APSC
Silphium laciniatum
APSC0023659 Christian Kentucky 14 Aug 1996 Edward W. Chester
13173
APSC
Silphium laciniatum
APSC0023651 Christian Kentucky 14 Aug 1996 Edward Chester
APSC
Silphium laciniatum
BRIT97794 Tennessee
VDB
Silphium laciniatum
BRIT97795 Tennessee
VDB
Silphium laciniatum
ETSU012969 Washington Tennessee
ETSU
Silphium laciniatum
31234100289154 Barren Kentucky Charles J. Lapham
EKY
Silphium laciniatum
TENN-V-0226911 Henry Tennessee
TENN
Silphium laciniatum
APSC0058504 McCracken Kentucky 30 Aug 1971 Raymond Athey
APSC
Silphium laciniatum
APSC0087716 McCracken Kentucky 19 Jul 1986 Max Medley
APSC
Silphium laciniatum
APSC0058506 Ballard Kentucky
APSC
Silphium laciniatum
BRIT97793 Tennessee
VDB
Silphium laciniatum
BRIT97797 Tennessee
VDB
Silphium laciniatum
31234100732658 Grayson Kentucky L. Phillippe
EKY
Silphium laciniatum
TENN-V-0227134 McCracken Kentucky
TENN
Silphium laciniatum
APSC0069706 Ballard Kentucky
APSC
Silphium laciniatum
APSC0023654 Montgomery Tennessee 11 Jul 1994 Edward W. Chester
13050
APSC
Silphium laciniatum
APSC0023656 Montgomery Tennessee
APSC
Silphium laciniatum
APSC0119776 Jefferson Kentucky
APSC
Silphium laciniatum
APSC0119774 McCracken Kentucky
APSC
Silphium laciniatum
APSC0087715 McCracken Kentucky 19 Jul 1986 Max Medley
APSC
Silphium laciniatum
APSC0058503 McCracken Kentucky 30 Aug 1971 Raymond Athey
APSC
Silphium laciniatum
BRIT97792 Tennessee
VDB
Silphium laciniatum
BRIT97790 Tennessee
VDB
Silphium laciniatum
31234100289121 Christian Kentucky Raymond Athey
EKY
Silphium laciniatum
TENN-V-0226913 Henry Tennessee
TENN
Silphium laciniatum
TENN-V-0226912 Henry Tennessee
TENN
Silphium laciniatum
APSC0023655 Montgomery Tennessee
APSC
Silphium laciniatum
APSC0023657 Montgomery Tennessee 26 Aug 1981 Edward W. Chester, Jim Price
81-732
APSC
Silphium laciniatum
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Plant Photos

Silphium laciniatum - Dwayne Estes
Silphium laciniatum - Dwayne Estes
Silphium laciniatum - Dwayne Estes
Silphium laciniatum - Dwayne Estes
Silphium laciniatum - Dwayne Estes
Silphium laciniatum - Dwayne Estes
Silphium laciniatum - Tara Littlefield
Silphium laciniatum - Tara Littlefield
Silphium laciniatum - Tara Littlefield
Silphium laciniatum - Tara Littlefield
Silphium laciniatum - Tara Littlefield
Silphium laciniatum - Tara Littlefield
Silphium laciniatum - Theo Witsell
Silphium laciniatum - Theo Witsell
Silphium laciniatum - Theo Witsell
Silphium laciniatum - Theo Witsell
Silphium laciniatum - Theo Witsell
Silphium laciniatum - Theo Witsell
Silphium laciniatum - Theo Witsell
Silphium laciniatum - Theo Witsell