Picris hieracioides

Tracheophyta MagnoliopsidaAsteraceaePicrisPicris hieracioides

Ecology

A biennial or perennial herb, mainly of calcareous soils, occurring in the less heavily grazed swards in chalk and limestone grassland, on roadsides and railway banks, and in quarries and lime-pits. It is intolerant of heavy grazing and is a poor competitor in dense vegetation. Lowland.

Status

Native

World Distribution

Eurasian Temperate element.

© G. Toone, IWNHAS

Broad Habitats

Calcareous grassland (includes lowland and montane types)

Light (Ellenberg): 8

Moisture (Ellenberg): 4

Reaction (Ellenberg): 8

Nitrogen (Ellenberg): 3

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.8

July Mean Temperature (Celsius): 16

Annual Precipitation (mm): 781

Life form information

Height (cm): 95

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 885

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 8

Atlas Change Index: -0.06

Weighted Changed Factor: 14

Weighted Change Factor Confidence (90%)

28

Distribution information

JNCC Designations

NBNSYS0000004526

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