Vascular Plants of North Carolina
Account for Flattop Mille-graines - Oldenlandia corymbosa   L.
Members of Rubiaceae:
Members of Oldenlandia with account distribution info or public map:
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Section 6 » Order Rubiales » Family Rubiaceae
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DistributionWidely scattered in 7 counties. No doubt other populations exist. First discovered in NC by Oliver M. Freeman in 1956, NW of Tryon, Polk County. Recently collected in Duplin (2003), Mecklenburg (2017), Currituck (2018), and Moore (2020) counties. Weakley (2018) also mentions a report by Guy Nesom (2000) from Orange County and Brian England reports it from Wake County (several locations from 2014 forward).

Native of South America; in N.A. VA to FL, TX, and AR.
AbundanceRare, but seems to be spreading in SC and NC, according to verbal communications by various botanists.
HabitatSeasonally wet hardpan forest (Mecklenburg Co.), garden weed (Duplin Co.), sandy roadside (Currituck Co.), cultivated land (Polk Co.), gravel driveway (Moore Co.).
PhenologyFlowering and fruiting July-October.
IdentificationThis plant is slender, the stems up to a foot or more tall and widely branching. In unfavorable situations, plants are less than 6 inches long and rather prostrate. 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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Other Common Name(s)
State RankSE
Global RankGNR
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USACE-empFAC link
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B.A. SorrieIn gravel driveway, Whispering Pines, NC, August 2020. MooreOther_non_natural
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