Hieracium aquilonium (Elfstr.) 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 aquilonium (Elfstr.) Norrl.

Native status

Native. Riversides, tundra.

Distribution

Finland: Le; northern Norway and Sweden.

Diagnosis

Stems 25–35 cm tall. Basal leaves greyish-green, lanceolate to spatulate, base narrowly cuneate to attenuate, apex triangular to narrowly subrotund, with indistinct or without teeth, on a rather long petiole, with dense simple hairs 1.5–2 mm long above; cauline leaves 2–3, usually strongly reduced. Synflorescence of 1 (2) flowering head (s). Phyllaries very narrowly triangular to nearly linear, with acute to narrowly attenuated apex, 11–12 mm long, dark-olivaceous, with abundant black-based simple hairs 2–2.5 mm long, rather dense to dense glandular hairs 0.2–0.5 mm long and without stellate hairs, apex with abundant long ciliae. Synflorescence branches with rather dense simple hairs 2–3.5 mm long, dense stiff glandular hairs 0.5–1 mm long and stellate hairs. Styles with blackish (discoloured) papillae. Ligules sparsely ciliate.