Hieracium chlorellum 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 chlorellum Norrl.

Native status

Native. Sparse pine forests.

Distribution

Finland: Al, Ab, N, Ka, Ta, Sa, Kl, Sb, Kb; Denmark ( Schou 2001), Norway, Sweden ( Samuelsson 1954, Tyler 2006 e), northern European Russia ( Samuelsson 1954, Schljakov 1989, Sennikov 2000, Sennikov 2008 b) reaching as far as Tver Region in the east ( Sennikov 2006 b).

Diagnosis

Stems 30–40 cm tall. Rosulate leaves triangular-ovate or ovate, base sagittate, apex broadly triangular or usually subrotund, with large triangular teeth in the basal half, rather thick, pale-green, with rare simple hairs 0.6–0.8 mm long above (glabrescent in the centre), on short petioles. Cauline leaf single, usually reduced. Phyllaries broadly triangular, with a broadly acute apex, 10–11 mm long, pale grey-green, with sparse to rather dense whitish simple hairs 0.5–0.8 (1) mm long, sparse to rather dense glandular hairs 0.3–0.5 (0.7) mm long and dense stellate hairs throughout, apex with long ciliae. Synflorescence branches with solitary simple hairs, rare to sparse glandular hairs 0.3–0.5 mm long and stellate hairs. Styles with dark papillae. Ligules glabrous.