Trinia glauca

Tracheophyta MagnoliopsidaUmbelliferaeTriniaTrinia glauca


This monocarpic, dioecious perennial herb is restricted to dry limestone sites, typically occurring in short-grazed, open, species-rich turf on S.-facing slopes. In heavily grazed turf the plant can be perennial until the opportunity arises to flower. Reproduction is by seed. Lowland.



World Distribution

European Southern-temperate element.

Broad Habitats

Calcareous grassland (includes lowland and montane types)

Light (Ellenberg): 9

Moisture (Ellenberg): 2

Reaction (Ellenberg): 8

Nitrogen (Ellenberg): 1


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 4.9

July Mean Temperature (Celsius): 16.4

Annual Precipitation (mm): 889

Life form information

Height (cm): 20

Perennation - primary

Biennial, including monocarpic perennials

Life Form - primary




Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 6

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: 0.12

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