1A
Malta Starthistle
Centaurea melitensis
Also known as Malta thistle
Plants not known to be in Utah, but thought to be present in neighboring states. If found in the state, swift eradication of any plants in this category is a very high priority.
Description
An annual or biennial plant that grows 1-2 feet tall on stiff, branching stems. Leaves are grayish green with stiff hairs, and dotted with resin. Leaf bases extend down the stem and cause the stem to look winged. Sharp purplish spines occur below the yellow flower head.
