Tephroseris crispa

Tephroseris crispa (with no established common name, though sometimes referred to as hawkweed or groundsel, neither of which is botanically quite correct) is a perennial herbaceous plant growing in humid mountainous areas. In the Czech Republic, it is found in category C4 (requiring further attention) on the Red List of Endangered Species. The perennial herb grows to heights of 20 – 70 cm. The stem is erect, unbranched, with longitudinal grooves, woolly or hairless. The leaves are likewise woolly or hairless; the bottom-stem leaves have long petioles that are wider at the base, with ovate-lanceolate blades that are irregularly serrate or curly at the edge. Mid-stem leaves have short petioles that are alate, constricted and semi-amplexicaul at the base; the leaves themselves are of ovate shape. The leaves at the top of the stem are the smallest, of elongated lanceolate shape, sessile, and semi-amplexicaul. The inflorescence is a flower head, 24 – 35 mm wide on average, on elongated peduncles, whereas several flower heads form a false umbel. The tongue-shaped flower petals are orange-yellow. The plant is flowering from May through August. The fruit is a hairy cylindrical achene. Tephroseris crispa has a short rhizome.