Ireland

Spring wild oat

Avena fatua

Description
Annual panicle grass.

Characteristic Features
Dense panicle, spikelets with 0-1 awn, florets (seeds) do not readily separate and shed.

Young Plant
The youngest leaf is rolled, leaf blades colored dark green, up to 40 cm (15.75 inch) and 4 - 18 mm (0.16 - 0.71 inch) wide.

Stems
Erect, plant height from 40 to 150 cm (15.75 - 59.05 inch).

Leaves
The membraneous ligule is up to 6 mm (0.24 inch) long, often irregularly toothed (dentate, fringed).
No auricles.
Sheaths smooth or slightly hairy, especially in younger plants.
Leaves are left screwed.