Ceratocapnos claviculata

Tracheophyta MagnoliopsidaFumariaceaeCeratocapnosCeratocapnos claviculata


A climbing or scrambling annual of freely-draining acidic, mineral or peaty soils. It occurs in deciduous and coniferous woodland, especially in clearings and in recently felled areas, under Pteridium and in scrub, and occasionally over rock outcrops. In Ireland, it occurs on shaded boulder slopes. Generally lowland, but reaching 430 m on Deadwater Fell (S. Northumb.).



World Distribution

Oceanic Temperate element.

© P. Shannon

Broad Habitats

Light (Ellenberg): 5

Moisture (Ellenberg): 5

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 5


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.3

July Mean Temperature (Celsius): 14.6

Annual Precipitation (mm): 1111

Life form information

Height (cm): 75

Perennation - primary


Life Form - primary

Therophyte (annual land plant)



Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 1122

Count of 10km squares in Ireland: 20

Count of 10km squares in the Channel Isles: 2

Atlas Change Index: 0.57

Weighted Changed Factor: 28

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


External Species Accounts

PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.

Atlas text references

Atlas (30c) Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1991) Meusel H, Jäger E, Weinert E
1965.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.