Kentucky Nature Preserves Rare Plants

Kentucky State Nature Preserves Commission

Michaux's Bluets
Houstonia serpyllifolia
Family: Rubiaceae

Protection Status:
State Status:  E
USFWS Status: {null}

Global Rank: G4?
State Rank: S1

Streambanks, grassy balds, moist forests, seepy rock outcrops, spray cliffs, and moist disturbed areas (Weakley 1998); moist soil in the mountains (Gleason & Cronquist 1991).

Species Description:
Perennial herb.

Flowering Period: Early May to late June.

Additional Information at NatureServe

Diagnostic Characteristics:
These diminutive plants are a few inches tall and the stems are prostrate. The blue flowers have a yellow center and a long tube that is hairy within and opens abruptly at the summit. They occur singly on an elongate pedicel. The leaves are generally orbicular. It occurs on moist soils, usually along streams in or near the mountains.

Avoid changes in moisture/hydrologic conditions at the site. Changes could result from overstory removal, stream/wetland alteration or vegetation removal that would result in increased erosion. Disturbance such as ATV trails, timber removal or any activity that results in increased erosion and weed invasion will be detrimental. Exotic pest plants are a threat to this species and should be removed. Avoid creating access to the site through trail or road construction.

Global Range:
Called a Southern Appalachian species by Core; mtns of NC, Oconee Co. SC, sw VA, n GA, TN, WV, n to south-central PA.

Known Kentucky Occurrences:

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Data last updated: Wednesday, May 28, 2014
Kentucky State Nature Preserves Commission
801 Teton Trail
Frankfort,KY 40601
Phone: (502) 573-2886
Fax: (502) 573-2355
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