Narrow-leaved Water-dropwort - Oenanthe silaifolia

Description

Tall, erect, sparsely branched plant. Stems hollow and grooved, often constricted at the nodes. Flowers usually white, occasionally pink in terminal umbels that usually have 4 to 10 rays. These become markedly thickened when in fruit.

Identification difficulty
ID guidance

Terminal umbels, with peduncles longer than rays; segments of mid-stem leaves with linear lobes; most umbels with no bracts; stems very thin walled and hollow

Recording advice

A photograph of the plant in its habitat, with details of leaves, flowers and fruit

Habitat

Wet grassland, and in wet brackish places near the coast.

When to see it

Flowers in June and July.

Life History

Perennial.

UK Status

This is a nationally scarce species

VC55 Status

In the 1979 Flora survey of Leicestershire it was found in 2 of the 617 tetrads.

In the current Checklist (Jeeves, 2011) it is listed as Native, and recorded from 6 localities, but recently only from floodplain grassland along the River Soar in Loughborough.  

It is on the Rare Plant Register

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map