Chaenorhinum minus

Tracheophyta MagnoliopsidaScrophulariaceaeChaenorhinumChaenorhinum minus


A spring-germinating annual of open habitats on well-drained, often calcareous, soils, including cultivated fields, forestry tracks, on rough waste ground, old walls, quarries, and especially along railways. 0-425 m (Kirkstone Pass, Westmorland).



World Distribution

As an archaeophyte C. minus has a European Temperate distribution; it is widely naturalised outside this range.

Broad Habitats

Light (Ellenberg): 8

Moisture (Ellenberg): 4

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 4


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 15.3

Annual Precipitation (mm): 899

Life form information

Height (cm): 25

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: 1468

Count of 10km squares in Ireland: 170

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.63

Weighted Changed Factor: -31

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


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 (223d)
Grime JP, Hodgson JG, Hunt R
1988.  Comparative Plant Ecology.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.