Hieracium crinellum Omang

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 crinellum Omang

Synonym: Hieracium schmidtii subsp. residuum Norrl. , syn. nov. Its lectotype (designated here): Finland. Tavastia australis : Kuhmois å en högt berg vid Isojärvi, 19. 07. 1866, J. P. Norrlin (H, isolectotype H).

Native status

Native. Sparsely forested rocks.

Distribution

Finland: Ta; Norway, Sweden ( Tyler 2011). The Finnish occurrence of the species is rather unusual. It is remotely isolated from the Scandinavian part of its distribution area and also distinctly separated from the main distribution of the Oreadea - group in Finland, which is confined to the coastal areas of the Gulf of Bothnia and the Gulf of Finland. Nevertheless, Hieracium subonosmoides shows a similar extension to the mainland rocks of Tavastia australis and apparently represents a similar relic occurrence there.

Notes

Hieracium schmidtii subsp. residuum Norrl. has been long known as a local endemic of Tavastia australis in southern Finland, readily differring from the other Finnish taxa of the Oreadea - group in a longer pubescence on its stems and leaves ( Norrlin 1906, Hackman and Sennikov 1998). The recent treatment of the Oreadea - group in Sweden ( Tyler 2011) revealed that the only taxon with the longer hairs in this country is H. crinellum , which is also dissimilar from the other Swedish taxa. Our examination of the lectotype specimen of H. schmidtii subsp. residuum (Fig. 2), which remains the only collection of the taxon in Finland since its collection year (1866), unambiguously shows its identity to the Swedish collections, described by Tyler, not only in the long simple hairs on the whole plant, but also in the characteristically narrow phyllaries with numerous long ciliae on the top. A new synonymy is consequently proposed here.

Diagnosis

Stems 25–35 cm tall. Rosulate leaves narrowly oblong, base broadly cuneate, apex broadly triangular, with repand margins, thick and rigid, plumbeous-green, glabrous above, with simple hairs 4–5 mm long along the margins, on rather long petioles. Cauline leaf single, usually strongly reduced. Phyllaries very narrowly triangular, with very narrowly attenuated apex, 11–12 mm long, grey-green, with sparse to rather dense simple hairs 2–3 mm long, rather dense glandular hairs 0.1–0.3 mm long and sparse to rather dense stellate hairs throughout, apex with long ciliae. Synflorescence branches with sparse simple hairs, abundant glandular hairs 0.1–0.2 mm long and stellate hairs. Styles with yellow papillae. Ligules glabrous.