Hieracium progrediens 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 progrediens Norrl.

Native status

Native. Birch forests, forest margins, shrubs.

Distribution

Tb, Sb, Kb; Sweden ( Tyler 2017), northern European Russia ( Schljakov 1989).

Diagnosis

Stems 50–70 cm tall. Rosulate leaves long-lanceolate, base attenuated to cuneate, apex triangular, with very sparse minute teeth, rather thin, dark-green, with sparse to rather dense simple hairs 1–1.5 mm long above, on rather long petioles. Cauline leaves similar, 2–3. Phyllaries broadly triangular, with acute apex, 11 mm long, blackish-green, usually without simple hairs, with abundant glandular hairs 1–2 mm long and rare stellate hairs along the margins in the basal half, apex with indistinct ciliae. Synflorescence branches without simple hairs, with very dense glandular hairs 0.5–1.2 mm long and stellate hairs. Styles with black papillae. Ligules glabrous.