Flowers Yellow

Tall shrub 6 to 20 feet high; flowers large and showy	Flannel bush
Smaller shrub; less than 5 feet high
Stems covered with white wool
Stems with sharp spines	Cotton thorn
Stems without spines	Gray horsebrush
Stems not covered with white wool
Flowers in spring; 5 petals	Black bush
Flowers in late summer; brush-like at stem tips	Rabbitbrush