Yellow Hawkweed and Yellow Devil Hawkweed
Hieracium caespitosum Dumort and H. floribundum Wimm. & Grab.
Similar, low-growing, perennials spreading by rhizomes and runners forming patches and adapted to poor, dry sites. Leaves of yellow hawkweed are rough, dull, with long hairs on both surfaces and wider near the tips than base. Leaves of yellow devil hawkweed are shiny, longer and narrower, with few, if any, hairs. Leaves of both are mostly basal. Both contain a milky latex and both have erect flowering stalks. Those of yellow devil hawkweed may be 20 to 80 cm tall; while those of yellow hawkweed are 20 to 50 cm tall. Dandelion-like flowers occur in terminal clusters and are compound with bright yellow ‘petals’. Florets produce a single, dry seed with a grey white pappus or tuft of hairs to aid dispersal. Both bloom in mid-summer. Other yellow hawkweeds may be found, especially the shorter and hairier mouse-eared hawkweed.
Yellow Hawkweed – In Flower
