Centinodia bellardi, Polygonum arenarium, Polygonum aviculare, Polygonum chlorocoleum, Polygonum flagellare, Polygonum flagelliforme, Polygonum flavescens, Polygonum gmelini, Polygonum kitaibelianum, Polygonum laxiflorum, Polygonum monspeliense, Polygonum nudum, Polygonum patulum, Polygonum ramiflorum, Polygonum reticulatum, Polygonum rubriflorum, Polygonum strictum, Polygonum tiflisiense, Polygonum virgatum
Narrowleaf knotweed
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www.catalogueoflife.org
QNHG (Qatar Natural History Group) and associated people, for a possibility to participate in their field excursions and to learn about local nature.