Hawkweed

Description
Hawkweeds hybridize freely with native and non‐native species, and are very difficult to identify to species.
Hawkweeds are all perennials in the sunflower family with milky juice, yellow or orange dandelion‐like flower heads and are bristly‐hairy overall.
Plants have rosettes of strap or lance‐shaped leaves at the base of the stem. Basal leaves of most non‐native hawkweeds usually persist through flowering.
Many non‐native hawkweeds have stolons (runners), allowing for aggressive vegetative reproduction.
Native Washington hawkweed species do not have stolons.  However, some non‐native hawkweeds do not have stolons either.