Hieracium kuusamoense Vainio

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 kuusamoense Vainio

Native status

Native. Tundra, in shrubs and along brooks.

Distribution

Finland: Ok, Obu, Ks, Lkk, Lks, Le, Li; northern Scandinavia, northern European Russia ( Schljakov 1989, Sennikov 2008 b), extending eastwards as far as southern Siberia ( Chepinoga et al. 2024). In Asia, the species was reported from the mountains as far as the Tian-Shan and the Himalayas ( Sennikov 2012).

Notes

This species has been synonymised with Hieracium plicatum Lindeb. ( Tyler 2017) , but differs from the latter in its rosulate leaves being much more numerous and cauline leaves being largely reduced in size.

Diagnosis

Stems 30–40 cm tall. Basal leaves always present at anthesis, narrowly lanceolate to narrowly rhombic-lanceolate, base narrowly cuneate, apex narrowly triangular, with prominent serrate teeth, rigid, dark-green, with sparse to dense simple hairs 0.5–0.8 (1) mm and stellate hairs above, on rather short petioles. Cauline leaves similar, shortly petiolate, 2–3. Phyllaries narrowly triangular, with acute apex, (8) 9–10 mm long, dark grey-green, with abundant whitish simple hairs 1–1.5 (1.8) mm long, sparse glandular hairs 0.1–0.2 (0.3) mm long and sparse stellate hairs along the margin, apex with numerous long ciliae. Synflorescence branches strongly abbreviated under the central head, with dense simple hairs, sparse to rather dense glandular hairs 0.1–0.2 (0.3) mm long and stellate hairs. Styles with black papillae. Ligules glabrous.