Houstonia serpyllifolia

Classification	Dicots
Family	Rubiaceae
Family (Traditional)	Rubiaceae
Genus	Houstonia
Species:	Houstonia serpyllifolia Michx.
Common Name	Thymeleaf Bluet
Growth Habit	forb
Plant Notes	**
Characteristics	Armaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: Yes; Woody Herbaceous: Herbaceous; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Mesic; Moisture Requirements: Mesic-Hydric; Moisture Requirements: Hydric; Moisture Requirements: Wetland; Region of Origin: North America; Reproductive Phenology: May; Reproductive Phenology: June; Reproductive Phenology: July; Leaf Arrangement: opposite; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaflet Margins: entire; Leaflet Number: 0; Anther Type: Dorsifixed; Base Flower Color: Blue; Fruit Dehiscence: Yes; Fruit Type: Capsule; Fruit Wet/Dry: Dry; Hypanthium Present: No; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Perianth Present: Yes; Petal Number: 4; Placentation Type: Axillary; Sexuality: monoclinous; Sporangium Arrangement: N/A
C value	10
Status	Native; AGCP (FACW), EMP (FAC) (NWPL); TN[SNR] KY[S1] (State Rank); G4? (Global Rank)
Specimen(s)	View and Download Specimen Details »

** Not applicable or data not available.

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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

Interior River Valleys and Hills
- Shawnee / Caseyville Hills
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
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Synonyms

Synonym	Full Citation
Hedyotis serpyllifolia	Hedyotis serpyllifolia

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: Letcher (KY), Whitley (KY), Bradley (TN), Carter (TN), Coffee (TN), Cumberland (TN), Hamilton (TN), Johnson (TN), Monroe (TN), Polk (TN), Sevier (TN), Sullivan (TN), Unicoi (TN), Van Buren (TN)

Herbaria represented by specimen data listed below: APSC, EKY, ETSU, HTTU, MTSU, TENN, UCHT

Range of years during which specimens were collected: 1983 - 2012

Accession No. (click for full details)	County	State	Coll. Date	Collector & Collection No.	Herbarium & Herbarium Name Used
TENN-V-0202896	Johnson	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202898	Monroe	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202904	Unicoi	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202901	Monroe	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202899	Monroe	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202903	Sullivan	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202894	Johnson	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202905	Van Buren	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202900	Monroe	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202897	Johnson	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202902	Monroe	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202892	Carter	Tennessee			TENN Houstonia serpyllifolia
APSC0083222	Letcher	Kentucky			APSC Houstonia serpyllifolia
HTTU015715		Tennessee			HTTU Houstonia serpyllifolia
HTTU015713	Johnson	Tennessee			HTTU Houstonia serpyllifolia
HTTU015714		Tennessee			HTTU Houstonia serpyllifolia
HTTU024437	Cumberland	Tennessee			HTTU Houstonia serpyllifolia
MTSU017923	Coffee	Tennessee	26 Mar 2005	Kathleen Kimbro	MTSU Houstonia serpyllifolia
MTSU017962	Polk	Tennessee	17 Apr 1983	Leslie Wilson 65	MTSU Houstonia serpyllifolia
UCHT040592		Tennessee			UCHT Houstonia serpyllifolia
UCHT040593	Hamilton	Tennessee			UCHT Houstonia serpyllifolia
UCHT040590	Bradley	Tennessee			UCHT Houstonia serpyllifolia
UCHT040591		Tennessee			UCHT Houstonia serpyllifolia
UCHT040594		Tennessee			UCHT Houstonia serpyllifolia
UCHT040595	Monroe	Tennessee			UCHT Houstonia serpyllifolia
ETSU035405	Carter	Tennessee			ETSU Houstonia serpyllifolia
ETSU035408	Carter	Tennessee			ETSU Houstonia serpyllifolia
ETSU008782	Carter	Tennessee			ETSU Houstonia serpyllifolia
ETSU035411	Carter	Tennessee			ETSU Houstonia serpyllifolia
ETSU035406	Carter	Tennessee			ETSU Houstonia serpyllifolia
TENN-V-0245498	Sevier	Tennessee			TENN Houstonia serpyllifolia
31234100746799	Whitley	Kentucky		Martina Hines	EKY Houstonia serpyllifolia
N/A	Carter	Tennessee	22 Apr 2012	Frosty Levy	ETSU Houstonia serpyllifolia
TENN-V-0202895	Johnson	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0204634	Johnson	Tennessee			TENN Houstonia serpyllifolia
TENN-V-0202893	Carter	Tennessee			TENN Houstonia serpyllifolia

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Houstonia serpyllifolia

Related Links

Species Distribution Map

Ecoregions

Synonyms

Specimens and Distribution

Plant Photos