Vascular Plants of North Carolina
Account for Flattop Mille-graines - Oldenlandia corymbosa   L.
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Section 6 » Order Rubiales » Family Rubiaceae
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DistributionWidely scattered in 5 counties. No doubt other populations exist. First discovered in NC by O.M. Freeman in 1956, NW of Tryon, Polk Co. Recently collected in Duplin (2003), Mecklenburg (2017), and Currituck (2018) counties. Weakley (2018) also mentions a report by Nesom (2000) from Orange County.

Native of South America; in N.A. VA to FL, TX, and AR.
AbundanceVery rare.
HabitatSeasonally wet hardpan forest (Mecklenburg Co.), garden weed (Duplin Co.), sandy roadside (Currituck Co.), cultivated land (Polk Co.).
PhenologyFlowering and fruiting July-October.
IdentificationThis plant is slender, the stems up to a foot or more tall and widely branching. The leaves are opposite and vary from linear to lance-shaped. The flowers occur singly or a few together in upper axils, tiny, white, with 4 pointed petals. The flowers are on quite long pedicels.
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State RankSE
Global RankGNR
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