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MONOECIA DIANDRIA.
772. Serapias palustris.
In Bogs at Hilton and Castle Eden Dean, D. Near Polam, D.—W. Backhouse, jun. In Butterby and Cocken Woods, D.—W. Weighell. Near Low Park End, N.
MONOECIA MONANDRIA.
773. Zannichellia palustris.
In Ditches near Gateshead; also in Ponds near Hilton Castle, D. In Ditches near St Peter's Quay; also in Ponds near St Anthony's, N.
MONOECIA DIANDRIA.
774. Lemna trisulca.
In Ditches near Sunderland, D. In Hell Kettles near Darlington, D.—W. Backhouse, jun. In Ditches near Newcastle, N.
775. Lemna minor.
In Ditches and Pools, frequent.
