How to identify the difference between Japanese and downy brome

Japanese brome (Bromus japonicas) exists as a winter annual or summer annual grass weed in the Canadian Prairies.

Control of downy brome (Bromus tectorum) and Japanese brome (Bromus japonicus) using glyphosate and four graminicides: effects of herbicide rate, plant size, species, and accession, Weed Technology

Bromus tectorum

On the watch for downy and Japanese brome - Manitoba Co-operator

Downy brome Integrated Crop Management

Cheatgrass - Montana Field Guide

Another bad grass that causes havoc

Cheatgrass - Montana Field Guide

Cheatgrass - At Home Colorado - Home and Garden

Downy Brome Management in Montana Agriculture Cropland Weed Research Montana State University Edward Davis, Fabian Menalled. - ppt download