Hieracium caesitium (Norrl.) Brenner

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 caesitium (Norrl.) Brenner

Synonym: Hieracium maculosum (Dahlst. ex Stenstr.) Dahlst.

Native status

Native. Forest margins, sparse pine forests.

Distribution

Finland: Al, Ab, N, Ka, St, Ta, Sa, Oa, Tb, Sb, Kb, Ok, Obo, Ks, Lks; Norway, Sweden ( Samuelsson 1954), northern European Russia ( Schljakov 1989, Sennikov 2006 c, Sennikov 2008 b). Reported also from Western Europe ( POWO 2025).

Diagnosis

Stems 40–50 cm tall. Rosulate leaves elliptic-ovate to triangular-ovate, base truncate to sagittate, apex rather acute, with prominent coarse teeth at the base, rather thick, bright-green, glabrous or with sparse simple hairs along the margins above, on rather long petioles. Cauline leaf single, reduced in size or absent. Phyllaries narrowly triangular, with a narrowly acute apex, 9–10 mm long, grey-green, with sparse to rather dense dark simple hairs 0.5–0.8 (1) mm long, rare glandular hairs 0.2–0.4 (0.5) mm long and sparse stellate hairs throughout, apex with some long ciliae. Synflorescence branches with rare to sparse simple hairs up to 0.5 mm long, sparse glandular hairs 0.2–0.3 mm long and stellate hairs. Styles with black papillae. Ligules glabrous.