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

It is nationally scarce and locally rare and therefore a specimen should not be taken.  Take detailed field photos and submit to NatureSpot as soon as possible; and if you think you have found it in a new location, inform the County Recorder as soon you can. (RPR)

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 Flora of Leicestershire (Primavesi and Evans 1988) 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 listed on the current VC55 Rare Plant Register (Hall and Woodward 2022) as Locally Rare (i.e. present in less than 3 sites)

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Species profile

Common names
Narrow-leaved Water-dropwort, Sulphurwort
Species group:
Wildflowers
Kingdom:
Plantae
Order:
Apiales
Family:
Apiaceae
Records on NatureSpot:
2
First record:
26/05/2012 (Neville, Dave)
Last record:
24/05/2023 (Smith, Peter)

Total records by month

% of records within its species group

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