Hieracium semicurvatum Norrl.

Sennikov, Alexander, 2025, The collection-based inventory and spatial analysis of Hieracium s. str. (Asteraceae) in Finland, Biodiversity Data Journal 13, pp. e 154676-e 154676 : e154676-

Hieracium semicurvatum Norrl.

Native status

Native. Birch forests.

Distribution

Finland: Lkk, Le; Norway, Sweden, northern European Russia ( Samuelsson 1954).

Diagnosis

Stems 35–50 cm tall. Basal leaves greyish-green, rhombic-lanceolate to broadly oblong, base broadly cuneate to truncate, apex broadly triangular to subrotund, with a distinct serrate dentation in the basal and middle parts, on a very long petiole, with dense simple hairs ca. 1 mm long and stellate hairs along the central nerve above; cauline leaf 1, reduced in size. Synflorescence of 2–3 flowering heads, with rather short stiff branches. Phyllaries narrowly triangular, with acute or narrowly attenuated apex, ca. 11 mm long, dark-olivaceous, with rather dense to dense black-based simple hairs 1.5–2 mm long, dense glandular hairs 0.2–0.5 mm long and sparse stellate hairs in the basal part, apex with a small coma of long ciliae. Synflorescence branches with rather dense simple hairs up to 1 mm long, abundant stiff glandular hairs 0.5–0.7 mm long and stellate hairs. Styles with black papillae. Ligules glabrous.