Tubular Water-dropwort - Oenanthe fistulosa

Description

Medium to tall, greyish, hairless, stoloniferous plant. Stems little branched, ridged, hollow and often constricted at the nodes. Basal leaves 1 to 2 pinnate with oval lobed leaflets. Upper leaves pinnate with narrower leaflets, untoothed, with sheathing long hollow stalks. Flowers white or pink 3 mm in small umbels with only 2 to 4 thickened rays. Generally without bracts.

Identification difficulty
ID guidance

All umbels terminal; fruits without stalks, forming a globular cluster when ripe; leaves with petioles longer than the divided part; stems hollow and very thin-walled.

Recording advice

A series of photos of the plant in its habitat, with details of flower heads and/or fruits, stems and leaves (RPR)

Habitat

Shallow water and marshy habitats on fertile soils.

When to see it

Flowers June to September.

Life History

Perennial.

UK Status

Widespread and fairly frequent in Britain from Yorkshire southwards, though less frequent in the south west.

VC55 Status

Scarce and declining in Leicestershire and Rutland. In the Flora of Leicestershire (Primavesi and Evans 1988) it was found in 45 of the 617 tetrads, and in the Flora of Rutland (Messenger 1971) in 2 tetrads.

In the current Checklist (Jeeves, 2011) it is listed as Native; possibly scarce; it has declined sharply and now known from about 10 localities, almost all in the Soar valley.

It is listed on the current VC55 Rare Plant Register (Hall and Woodward 2022) because of its threat-level

 

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
Tubular Water-dropwort
Species group:
Wildflowers
Kingdom:
Plantae
Order:
Apiales
Family:
Apiaceae
Records on NatureSpot:
12
First record:
23/06/2015 (Robinson, Simon)
Last record:
04/03/2023 (Nicholls, David)

Total records by month

% of records within its species group

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