Plants - United States.

Flora of North America : = north of Mexico.. volume 24,. Magnoliophyta: Commelinidae (in part): Poaceae, pt. 1 / by: (Language materials, printed)

Flora of North America : = north of Mexico.. volume 27,. Bryophyta, part 1 / by: (Language materials, printed)

Flora of North America : = North of Mexico,. volume 19.. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1 / by: (Language materials, printed)

Predicting invasions of nonindigenous plants and plant pests by: (Language materials, printed)

Ecosystem- United States.

Nonindigenous pests- Control- United States.

Pest Control- United States.

Invasive plants- Control- United States.

Plants- United States.

Botany- North America.

Biological invasions- Prevention.- United States

Plants- Canada.

Plant invasions- Prevention.- United States