The lower part of the stem of hieracium albiflorum
has a dense covering of long hairs, but the upper section is mostly hairless. Leaves grow around the base - typically 5 or 6 - and the lower portion of the stem (usually 1 to 5); they too have long hairs, especially on the edges and the lower surfaces.
The inflorescence is an open, lightly branched cluster, the flowerheads consisting of 15 to 30 white, ray-like florets, each with four little notches along the flat tip. Underneath are 8 to 13 long, thin, dark green, pointed-tipped phyllaries, sparsely hairy, and glandular. Like the dandelion species that this plant resembles, the stems of white hawkweed contain a white, milky sap.