Aira praecox

Tracheophyta MagnoliopsidaPoaceaeAiraAira praecox

Ecology

An annual of sandy, gravelly and rocky places, commonly on thin acidic soils around rock outcrops, on walls, cliff-tops, heaths and sand dunes. It is rarely recorded as a wool casual. Generally lowland, but reaching 685 m on Mangerton Mountain (S. Kerry).

Status

Native

World Distribution

Suboceanic Southern-temperate element; widely naturalised outside its native range.

Broad Habitats

Light (Ellenberg): 8

Moisture (Ellenberg): 2

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 2

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.5

July Mean Temperature (Celsius): 14.3

Annual Precipitation (mm): 1149

Height (cm): 10

Perennation - primary

Annual

Life Form - primary

Therophyte (annual land plant)

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 2450

Count of 10km squares in Ireland: 659

Count of 10km squares in the Channel Isles: 13

Atlas Change Index: -0.19

Weighted Changed Factor: -14

Weighted Change Factor Confidence (90%)

20

JNCC Designations

NBNSYS0000002625