Hieracium orbolense (Stenstr.) Dahlst.

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 orbolense (Stenstr.) Dahlst.

Native status

Native. Open forest margins, shrubs.

Distribution

Finland: Al, Ab; Norway, Sweden ( Samuelsson 1954, Tyler 2017).

Diagnosis

Stems 40–50 cm tall. Basal leaves 3–5, usually well-developed at anthesis; cauline leaves 8–10, evenly distributed along the stem, lowermost ones rhombic-lanceolate, base cuneate, apex narrowly triangular, with prominent narrow teeth, rigid, greyish-green, glabrous, but with stellate hairs above, on very short petioles. Phyllaries narrowly triangular, with acute apex, 10–11 mm long, grey-green, with sparse to rather dense simple hairs ca. 1 mm long, sparse to rather dense glandular hairs 0.3–0.5 (0.7) mm long and sparse stellate hairs along the margins and in the basal part, apex with numerous short ciliae. Synflorescence branches with rather rare simple hairs, rare glandular hairs 0.2–0.3 mm long and stellate hairs. Styles with black or blackish papillae. Ligules glabrous.