Pictorial guide to the flora of the British Isles

Home ⟩ Pictorial Guide ⟩ Apiaceae / Umbelliferae ⟩ Silaum silaus / pepper saxifrage

Silaum silaus (L.) Schinz & Thell.

pepper saxifrage (Apiaceae / Umbelliferae)

 SpreadBias within British IslesDirection of bias
WidespreadStrong tendencySE
Plant Atlas 2020
BSBI Distribution Map

Silaum silaus typically grows in pH-neutral water-meadows on clay-rich soils; it is found across England and nearby parts of Wales, as well as along part of the course of the disused Waverley Route railway (VC80: Roxburghshire).

Botley (VC22: Berkshire); 2014-06-17

 pepper saxifrage / Silaum silaus: _Silaum silaus_ typically grows in pH-neutral water-meadows on clay-rich soils; it is found across England and nearby parts of Wales, as well as along part of the course of the disused Waverley Route railway (VC80).

The flowers of Silaum silaus are a distinctive yellowish white colour.

Botley (VC22: Berkshire); 2014-06-17

 pepper saxifrage / Silaum silaus: The flowers of _Silaum silaus_ are a distinctive yellowish white colour.

Each secondary umbel of Silaum silaus is adorned with numerous simple bracts.

Botley (VC22: Berkshire); 2014-06-17

 pepper saxifrage / Silaum silaus: Each secondary umbel of _Silaum silaus_ is adorned with numerous simple bracts.

The fruits of Silaum silaus have noticeable but narrow ridges.

Lower Slaughter (VC33: East Gloucestershire); 2021-08-03

 pepper saxifrage / Silaum silaus: The fruits of _Silaum silaus_ have noticeable but narrow ridges.

All images copyright © Christopher J. Dixon unless otherwise indicated.

L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne