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

Height (cm): 25

Perennation - primary


Life Form - primary

Therophyte (annual land plant)



Clonality - primary

Little or no vegetative spread

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%)


JNCC Designations


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.