Scientific NameBromus catharticus
Synonyms (former Scientific Names):
Rescuegrass is a tufted upright grass that grows to approximately 3 feet tall.
Leaves are long, reaching up to 14 inches long, and less than half an inch broad. There are no hairs on the underside of the leaves but there might be some pubescence on the upper side of the leaf. The ligule is a tall membrane (around 4mm).
Rescuegrass can behave as a winter annual or biennial. The leaves of this brome can lack hairs but the leaf sheath can be pubescent while the stem is glabrous.
Flower Seed Head
This seedhead has an open panicle (2.5 to 11in) that tends to droop.
The fruit for rescuegrass is a caryopsis, a dry single seed. The seed is tan, without hairs, and about half an inch in size.
This weed is found in cultivated and non crop areas such as fields, pastures, and roadsides.
Leaf Hair on Upper Surface
hairs on basal half only
rolled in bud
Mature Leaf Width
less than 5 mm,
6 to 15 mm
flat or oval
more than 3 mm