Houstonia nigricans var. nigricans

Family (Traditional)Rubiaceae
Species: Houstonia nigricans
Infraspecies:Houstonia nigricans (Lam.) Terrell var. nigricans
Common NameVirginia or West Virginia spiraea
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: Yes; Woody Herbaceous: Herbaceous; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Region of Origin: North America; Reproductive Phenology: May; Reproductive Phenology: June; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Leaf Arrangement: opposite; Leaf Complexity: simple; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaflet Number: 0; Anther Type: Dorsifixed; Base Flower Color: Pink; Base Flower Color: White; Fruit Dehiscence: Yes; Fruit Type: Capsule; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Perianth Present: Yes; Placentation Type: Axillary; Sexuality: monoclinous; Sporangium Arrangement: N/A
C value 8
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
Houstonia angustifolia var. scabra Houstonia angustifolia var. scabra
Houstonia fruticosa Houstonia fruticosa
Houstonia nigricans var. nigricans Houstonia nigricans var. nigricans
Stenaria nigricans Stenaria nigricans (Lam.) Terrell

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: Bullitt (KY), Estill (KY), Franklin (KY), Garrard (KY), Jackson (KY), Jessamine (KY), Mercer (KY), Wilson (TN)

Herbaria represented by specimen data listed below: EKY

Range of years during which specimens were collected: 1956 - 2010

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100660735 Mercer Kentucky 13 Jul 1991 David D. Taylor
Stenaria nigricans
31234100660792 Wilson Tennessee 01 Jul 1972 Sallie Potter
Stenaria nigricans
31234100750486 Garrard Kentucky 22 Aug 2010 W. W. Overbeck
Stenaria nigricans
31234100660719 Jackson Kentucky 01 Aug 1987
Stenaria nigricans
31234100660685 Estill Kentucky 04 Jul 1978 William H. Martin
Stenaria nigricans
31234100660727 Jessamine Kentucky 28 Jul 1982 Ronald L. Jones
Stenaria nigricans
31234100660677 Estill Kentucky William Martin
Stenaria nigricans
31234100660651 Bullitt Kentucky 08 May 1981 Richard H. Hannan
Stenaria nigricans
31234100660669 Estill Kentucky 21 Oct 1988 Richard G. Guetig
Stenaria nigricans
31234100660701 Garrard Kentucky 30 Jul 1956 Mary E. Wharton
Stenaria nigricans
31234100660693 Franklin Kentucky 08 Jul 1981 Steven Rice
Stenaria nigricans
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