Hieracium diaphanoides Lindeb.

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 diaphanoides Lindeb.

Synonym: Hieracium tenebrosum Norrl.

Native status

Native. Pine and spruce forests.

Distribution

Finland: Al, Ab, N, Ka, St, Ta, Sa, Oa, Tb, Sb, Kb, Om, Ok; broadly distributed in Northern and Central Europe ( Samuelsson 1954, Schljakov 1989, Sennikov 2000, Schou 2001, Sennikov 2003 b, Sennikov 2008 b, Sennikov and Golubeva 2014, Tyler 2017). Reports from Western and Central Europe, as well as Asia Minor ( POWO 2025), may belong to similar, but different taxa.

Diagnosis

Stems 40–70 cm tall. Rosulate leaves narrowly to broadly lanceolate, lanceolate-oblong or lanceolate-ovate, base cuneate, apex broadly triangular, with rather numerous minute to small serrate teeth, rather thin, dark-green, with sparse simple hairs 0.7–1.2 mm long above, on rather short petioles. Cauline leaves lanceolate-ovate, 2–4. Phyllaries broadly linear, with a broadly triangular, obtuse apex, 10–11 mm long, blackish-green, without or with a few simple hairs at the base, with abundant glandular hairs 0.8–1.5 mm long, and rare stellate hairs along the margins in the basal half, apex with indistinct ciliae. Synflorescence branches with or without simple hairs, with very dense glandular hairs 0.5–1 mm long and stellate hairs. Styles with black papillae. Ligules glabrous.