Vascular Plants of North Carolina
Account for Itch-grass - Rottboellia cochinchinensis   (Loureiro) W.D. Clayton
Members of Poaceae:
Only member of Rottboellia in NC.
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Section 5 » Order Cyperales » Family Poaceae
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Author(Loureiro) W.D. Clayton
DistributionSo far documented from Robeson County only: soybean field, 1.7 miles NW of Rowland, 5 Nov. 1984 (D.T. Patterson s.n. (DUKE). Other collections from the same site later in the same month.

Native of southeastern Asia; in N.A. mostly in the Gulf Coast states; scattered elsewhere.
AbundanceVery rare, so far as is known. Other populations may not have been documented with herbarium specimens.
HabitatSoybean and other crop fields. This is a Federal noxious weed, and Soil Conservation Service agents monitor it.
PhenologyFlowering and fruiting August-November.
IdentificationItch-grass may grow 2-5 or more feet tall and so stands above crops. The stems produce distinctive prop-roots from the lower nodes. The inflorescences are axillary and terminal, and look like narrow stacks of little cylinders one atop another.
Taxonomic Comments
Other Common Name(s)
State RankSE
Global RankGNR
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US Status
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