Erigeron rigidus Fr., Novit. Fl. Suec. Mant. III: 107 1843

• Main Authors: Sennikov, Alexander N., Kozhin, Mikhail N.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2023
• Subjects: Biodiversity; Taxonomy; Plantae; Tracheophyta; Magnoliopsida; Asterales; Asteraceae; Erigeron; Erigeron rigidus; Fennoscandia; White Sea
• Online Access: https://doi.org/10.5281/zenodo.10170248; http://treatment.plazi.org/id/AC7AF6378AA35193B535DDEDDD0BDE69

3. Erigeron rigidus Fr., Novit. Fl. Suec. Mant. III: 107 (1843) Fig. 6 Erigeron acris rigidus - Erigeron acris var. rigidus (Fr.) A.Blytt, Norges Fl. 2: 562 (1874) - Erigeron politus subsp. rigidus (Fr.) Jørg. in Forh. Vidensk.-Selsk. Kristiania 1894(8): 27 (1894). Erigeron acris ruber = Erigeron acris var. ruber Hartm., Handb. Skand. Fl., ed. 1: 315 (1820). Type. Sweden. Lule lappmark, S.N. Casström (holotype S, not traced). Type. Norway. Filefjell: Nystuen, M. Blytt (lectotype UPS, designated here). Description. Stems 25-50 cm tall, branched in the upper third, intensely to slightly purple-coloured, evenly covered by numerous hairs 0.5-1 mm long. Cauline leaves 4-8(12) under the synflorescence, spaced, gradually decreasing towards the stem top, completely covered by numerous hairs 0.5-1 mm long on both sides but subglabrous at the base below. Synflorescence with long branches carrying solitary to 2-3 capitula, nearly corymbose at the top, with numerous hairs 0.4-0.7 mm long. Phyllaries 6-7.5 mm long, purple-coloured completely or in the apical part, rather densely covered by hairs up to 0.5-0.8 mm long. Ray flowers intensely lilac. Pappus greyish-white. Flowers in July to August, fruits in August. Distribution in Murmansk Region. Coastal area of the White Sea, road from Alakurtti to Salla and Vuorijarvi Village, isolated at Kirovsk Town, Zasheyek Village and Kola Town (Fig. 4C). Global distribution. Boreal zone of Fennoscandia and Eastern Europe, southern limit unknown. Nomenclature note. Fries (1843a) mentioned two areas from which his new species was described, Filefjeld in Norway and Norrland in Sweden. The Norwegian report was based on a single specimen collected by M. Blytt in Nystuen and cited in the protologue, which is a syntype. The basis for the Swedish part of the distribution area was not specified in the protologue but Fries indicated by an exclamation mark that he had seen some (otherwise uncited) material. The specimen collected by Blytt has been traced at UPS (Hjertson, pers. comm.) and is ...