Crotalaria spectabilis

Family (Traditional)Fabaceae
Species:Crotalaria spectabilis Roth
Common NameRattle Box; Rattlebox; Showy Crotalaria; Showy Rattlebox; Showy Rattlepod
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: Yes; Woody Herbaceous: Herbaceous; Duration: Annual; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Dry-mesic; Moisture Requirements: Mesic; Region of Origin: Asia; Reproductive Phenology: April; Reproductive Phenology: May; Reproductive Phenology: June; Leaf Arrangement: alternate; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Type: broadleaf; Leaflet Margins: entire; Leaflet Number: 0; Base Flower Color: Yellow; Fruit Complexity: Simple; Fruit Dehiscence: Yes; Fruit Type: Legume; Fruit Wet/Dry: Dry; Ovary Position: Superior; Overall Flower Symmetry: Zygomorphic; Perianth Present: Yes; Petal Number: 5; Placentation Type: Parietal; Sporangium Arrangement: N/A
C value N/A
StatusNot Native; AGCP (FACU), EMP (FACU) (NWPL); TN[SNA] (State Rank); GNR (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
  • 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
Crotalaria retzii Crotalaria retzii Hitchc.
Crotalaria sericea Crotalaria sericea Burm.f.

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: Henry (KY), Grainger (TN), Henry (TN), Knox (TN), Madison (TN), Shelby (TN)

Herbaria represented by specimen data listed below: BEREA, MEM, TENN

Range of years during which specimens were collected: 1975 - 1975

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
BEREA013391 Henry Kentucky
Crotalaria spectabilis
BEREA013392 Henry Kentucky
Crotalaria spectabilis
TENN-V-0123662 Knox Tennessee
Crotalaria spectabilis
TENN-V-0123664 Madison Tennessee
Crotalaria spectabilis
TENN-V-0123661 Henry Tennessee
Crotalaria spectabilis
TENN-V-0123660 Grainger Tennessee
Crotalaria spectabilis
TENN-V-0123663 Madison Tennessee
Crotalaria spectabilis
MEM010261 Shelby Tennessee 18 Sep 1975 Robert W. McGowan
Crotalaria spectabilis
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