Polygonum oxyspermum Meyer & Bunge ex Ledeb. in Nederland gevonden

A single large specimen of Polygonum oxyspermum, belonging to the subsp. raii, has been found at a flood mark at the sea shore in SW.-Holland (Walcheren); a diagnosis of the specimen is given below. It is as yet uncertain whether this first record of the species can be regarded as a first establishment of it, or merely as an incidental occurrence.