Hieracium tenebrescens 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 tenebrescens Norrl.

Native status

Native. Forest margins.

Distribution

Finland: Ab, N, Ta. Endemic to Finland.

Diagnosis

Stems 40–60 cm tall. Rosulate leaves lanceolate to lanceolate-ovate, base cuneate, apex subrotund, with sparse prominent serrate teeth in the basal half, thin, grass-green, with sparse simple hairs 0.5–0.7 mm long above, on rather long petioles. Cauline leaf single, lanceolate-ovate. Phyllaries narrowly triangular, with acute apex, 10 mm long, blackish-green, with rather rare black simple hairs 0.8–1 mm long, very dense or abundant black glandular hairs 0.5–0.8 mm long and rare stellate hairs along the margins in the basal part, apex with few ciliae. Synflorescence branches with solitary or very rare simple hairs, very dense or abundant glandular hairs 0.5–0.7 mm long and stellate hairs. Styles with black papillae. Ligules glabrous.