Bartonia paniculata

Characteristics
Dicots
Gentianaceae
Bartonia
Bartonia paniculata (Michx.) Muhl. ssp. paniculata
Twining Screwstem
forb
7
**
Native TN[SNR] KY[SNR] (State Rank) G5T5 (Global Rank)
Armaments
No
Base Flower Color
White
Carpel Number/Pistil
2
Duration
Annual; Biennial
Fruit Dehiscence
Yes
Fruit Type
Capsule
Fruit Wet/Dry
Dry
General Ecology
Terrestrial
Growth Habit
forb
Leaf Arrangement
opposite
Leaf Complexity
simple
Leaf Duration
deciduous
Leaf Fragrance
No
Leaflet Margins
entire
Leaflet Number
0
Moisture Requirements
Mesic; Hydric
Overall Flower Symmetry
Actinomorphic
Parent Rock
Chert
Perianth Present
Yes
Petal Number
4
Pistil Number
1
Placentation Type
Parietal
Soil Composition
Mineral; Organic
Soil pH
Circumneutral
Stamen Number
4
Unconsolidated Rock
No; Yes
Woody Herbaceous
Herbaceous
View details of Herbarium specimens
** Not applicable or data not available.
Classification
Gentianales
Bartonia
Bartonia paniculata (Michx.) Muhl. ssp. paniculata - Twining Screwstem
Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display 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.

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
  • Interior River Valleys and Hills
    • Shawnee / Caseyville Hills
  • Mississippi Alluvial Plain
  • Mississippi Valley Loess Plains
Synonyms
Specimens and Distribution

Click on an Accession Number to view additional details about the specimen.

Range of years during which specimens were collected:

Plant Photos
Bartonia paniculata ssp. paniculata - 21
Bartonia paniculata ssp. paniculata - Tara Littlefield View Full Size
Bartonia paniculata ssp. paniculata - 19
Bartonia paniculata ssp. paniculata - Theo Witsell View Full Size
Bartonia paniculata ssp. paniculata - 19
Bartonia paniculata ssp. paniculata - Theo Witsell View Full Size
Bartonia paniculata ssp. paniculata - 19
Bartonia paniculata ssp. paniculata - Theo Witsell View Full Size