Hieracium fenno-orbicans 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 fenno-orbicans Norrl.

Synonym: Hieracium distendens Brenner

Native status

Native. Open places in pine and spruce forests.

Distribution

Finland: Ab, N, Ka, St, Ta, Kl, Oa, Tb, Sb, Kb, Obo, Obu, Ks; northern European Russia ( Samuelsson 1954, Schljakov 1989, Sennikov 2000, Sennikov 2008 b).

Notes

According to Sennikov (2002 a), the name Hieracium fenno-orbicans Norrl. was validly published in Lindberg (1906), whereas H. distendens Brenner was described in Brenner (1906). Both works are minor notes, which appeared in the same volume of Memoranda Societatis pro Fauna et Flora Fennica. Both have been originally issued as preprints, which effectively established their priority. Lindberg's correspondence was typeset before Brenner's note and, therefore, likely has been printed and distributed earlier and has priority over the latter. The reverse synonymy accepted by Hackman and Sennikov (1998) has no standing.

Diagnosis

Stems 40–50 cm tall. Rosulate leaves oblong to broadly oblong, base broadly cuneate, subrotund or truncate, apex subrotund, with numerous serrate teeth, thin, grass-green, with sparse simple hairs 0.4–0.5 mm long above, on long petioles. Cauline leaf single, triangular. Phyllaries triangular, with acute apex, 9–10 mm long, grey-green, with rather dense to dense half-black to blackish simple hairs 1–1.5 mm long, rather dense to dense glandular hairs 0.4–0.7 (1) mm long and sparse stellate hairs along the margins, apex with some long ciliae. Synflorescence branches with solitary simple hairs, rather dense to dense glandular hairs 0.3–0.5 mm long and stellate hairs. Styles with black papillae. Ligules glabrous.