Jacobaea vulgaris Gaertn.
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Details
Jacobaea vulgaris Gaertn., Fruct. Sem. Pl. 2, 445, t. 170 (1791)
Jacobaea vulgaris Gaertn.
Nomenclature
Gaertn.
Gaertn.
1791
445, t. 170
ICN
Jacobaea vulgaris Gaertn.
species
Jacobaea vulgaris
Classification
Vernacular names
Synonyms
Descriptions
Erect biennial or perennial herb, 30-120 cm tall. Stems densely lanate above but soon glabrous, usually branched only above, sometimes branched from base. Basal lvs lanate when young, usually becoming almost glabrous but often remaining hairy on veins of lower surface, rarely sparsely to moderately hairy on both surfaces, petiolate; petiole < lamina, amplexicaul; lamina lyrate-pinnatifid, obovate to ovate-oblong, obtuse to subacute at apex, (3)-5-20-(25) × (2)-4-6-(8) cm; segments ovate, oblong, or obovate, 1-2-pinnatisect; venation pinnate. Cauline lvs lyrate-pinnatifid to 1-pinnate; segments again 1-2-pinnatisect; uppermost lvs apetiolate, with narrow segments. Capitula usually numerous in dense, flat-topped corymbs, rarely fewer and more diffuse. Supplementary bracts 3-10, lanceolate, 1.5-3 mm long. Involucral bracts 11-14, ovate-oblong, 3-5 mm long, usually glabrous, sometimes with a few scattered hairs. Ray florets 11-13; ligules bright yellow, 5-12 mm long. Disc golden yellow. Achenes terete, 1.4-2.5 mm long, those of ray florets glabrous, those of disc florets moderately hairy; pappus 3.5-5 mm long, soon deciduous from ray achenes.
Taxonomic concepts
Jacobaea vulgaris Gaertn.
Jacobaea vulgaris Gaertn.
Jacobaea vulgaris Gaertn.
Jacobaea vulgaris Gaertn.
Jacobaea vulgaris Gaertn.
Jacobaea vulgaris Gaertn.
Senecio jacobaea L.
Jacobaea vulgaris Gaertn.
Collections
Metadata
144957cf-6af5-4b5a-b9dd-e5c94864dfc8
scientific name
Names_Plants
16 June 2008
11 March 2009