Nabalus asper

ClassificationDicots
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusNabalus
Species:Nabalus asper (Michx.) Torr. & A.Gray
Common NameRough Rattlesnakeroot
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: Yes; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: BE; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Region of Origin: North America; 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: White; 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: 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 9
StatusNative
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: Grayson (KY), McCracken (KY), Perry (TN)

Herbaria represented by specimen data listed below: APSC

Range of years during which specimens were collected: 1971 - 2002

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
APSC0060242 McCracken Kentucky 27 Aug 1971 Raymond Athey
APSC
Nabalus asper
APSC0060247 McCracken Kentucky 31 Aug 1976 Raymond Athey
APSC
Nabalus asper
APSC0060243 McCracken Kentucky 31 Aug 1976 Raymond Athey
APSC
Nabalus asper
APSC0024418 Perry Tennessee 03 Oct 2002 Dwayne Estes
04254
APSC
Nabalus asper
APSC0049276 Grayson Kentucky
APSC
Nabalus asper
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Plant Photos

Nabalus asper - Ashley B. Morris
Nabalus asper - Ashley B. Morris
Nabalus asper - Theo Witsell
Nabalus asper - Theo Witsell
Nabalus asper - Theo Witsell
Nabalus asper - Theo Witsell
Nabalus asper - Theo Witsell
Nabalus asper - Theo Witsell
Nabalus asper - Theo Witsell
Nabalus asper - Theo Witsell