Kentucky Plant Atlas




  
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Rubiaceae <Spermacoceae> Houstonia <Houstonia> [Hedyotis] caerulea
Houstonia caerulea L.
ALI: no HAB: s-7,10,11, ::, B, 4 ABU: g10, s10, -2
This small rhizomatous perennial is widespread on acid soils in eastern North America, except on the Gulf Coastal Plain. It is most common in thin woods and disturbed openings. It is sometimes locally abundant in mowed areas, where easily confused with pusilla. Although variable in ploidy (2n = 16, 32, 48), no segregates have been generally recognized (Cr; Church & Taylor 2005).