Houstonia serpyllifolia

Characteristics
Dicots
Rubiaceae
Houstonia
Houstonia serpyllifolia Michx.
Thyme Leaf Bluet
forb
10
**
Native AGCP (FACW), EMP (FAC) (NWPL) TN[SNR] KY[S1] (State Rank) G4? (Global Rank)
Anther Type
Dorsifixed
Armaments
No
Base Flower Color
Blue
Duration
Perennial
Fruit Dehiscence
Yes
Fruit Type
Capsule
Fruit Wet/Dry
Dry
General Ecology
Terrestrial
Growth Habit
forb
Leaf Arrangement
opposite
Leaf Complexity
simple
Leaf Dissection
0
Leaf Duration
deciduous
Leaf Fragrance
No
Leaflet Margins
entire
Leaflet Number
0
Moisture Requirements
Mesic; Hydric
Ovary Position
Inferior
Overall Flower Symmetry
Actinomorphic
Perianth Present
Yes
Petal Number
4
Placentation Type
Axillary
Soil Composition
Mineral
Unconsolidated Rock
No; Yes
Woody Herbaceous
Herbaceous
View details of Herbarium specimens
** Not applicable or data not available.
Classification
Rubiales
Houstonia
Houstonia serpyllifolia Michx. - Thyme Leaf Bluet
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
Houstonia serpyllifolia - 3
Houstonia serpyllifolia - Ashley B. Morris View Full Size
Houstonia serpyllifolia - 13
Houstonia serpyllifolia - Dwayne Estes View Full Size
Houstonia serpyllifolia - 13
Houstonia serpyllifolia - Dwayne Estes View Full Size
Houstonia serpyllifolia - 13
Houstonia serpyllifolia - Dwayne Estes View Full Size
Houstonia serpyllifolia - 2
Houstonia serpyllifolia - Joey Shaw View Full Size
Houstonia serpyllifolia - 2
Houstonia serpyllifolia - Joey Shaw View Full Size
Houstonia serpyllifolia - 2
Houstonia serpyllifolia - Joey Shaw View Full Size
Houstonia serpyllifolia - 20
Houstonia serpyllifolia - Milo Pyne View Full Size