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Juncus acutiflorus
Also called Sharp-flowered rush
Juncus acutiflorus, also called sharp-flowered rush, is a rush or a grassy flowering plant in the family Juncaceae. As the name suggests, the plant has notable sharp-looking flowers, flowering between July and September.
The plant commonly grows on acid soils in swampy wetlands and wet heathland and woodlands. This plant is sensitive to nitrate levels in the environment. In a Dutch rich-fen, chlorosis has been noted in stands of Juncus acutiflorus at locations where groundwater containing high levels of nitrate reached the surface. Experiments revealed that the chlorosis could be attributed to iron deficiency although iron levels in the shoots were well above the known physiological threshold values for iron deficiency. Nowadays, nitrate concentrations in ground water as high 1000 μM are no longer an exception in the Netherlands.
Dwarf Rush · Rush · Tapertip rush · Spiny rush · Northern green rush · Antarctic rush · Arctic rush · Jointleaf rush · Austral Rush · Mexican Rush · Baltic Rush · Twoflowered rush
Text excerpted from the Wikipedia article Juncus acutiflorus by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
