Silphiodaucus prutenicus

Silphiodaucus prutenicus, formerly classified as Peucedanum prutenicum and commonly known as Prussian carrot or eastern hog's-fennel, is a slender biennial or short-lived perennial herb of the family Apiaceae, native to dry meadows, sandy grasslands, oak woodland margins and forest steppes of central and eastern Europe, from Germany and Poland eastward through Ukraine and Russia into western Siberia. The plant grows 50–120 cm tall from a stout taproot and a short rootstock, producing erect, somewhat ridged, glabrous stems that are sparingly branched in the upper portion. The leaves are alternate and finely divided: two to three times pinnately dissected into narrow, linear-lanceolate ultimate segments 1–3 cm long, giving the foliage a feathery, dill-like appearance. The pale yellow flowers are very small (about 2 mm across) and are borne in compound umbels 4–8 cm wide, each with 10–20 unequal rays; both involucre and involucels of small linear bracts may be present. Flowering occurs from July to September. The fruits are flattened, broadly elliptic, winged schizocarps 5–8 mm long.