Taxonomy: Fam. Compositae// Genus: Erigeron// Species: Erigeron canadensis Retz.

Determined according to the botanical key provided in Flora Europaea Vol. 4 (Tutin et al., 1976) as Conyza canadensis (L.) Chronq. (syn. Erigeron canadensis L.) The accepted name in The Euro+Med PlantBase (source: Greuter, 2006+) is Erigeron canadensis L.

Distribution: Native from North to South America according to the distribution information provided by the Plants of the World Online portal (Royal Botanic Gardens, Kew). Introduced elsewhere.

Habitat: Disturbed ground, alongside roads and paths, near orchards, gardens and cultivated land, waste places, near and in settlements.

Lifeform: Annual, therophyte according to the Raunkiaer system.

Flowering period: Summer- autumn: AUG, SEP.

Erigeron canadensis – habit. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – upper part of plant with synflorescence. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – synflorescence with capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – synflorescence with capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – synflorescence with capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – synflorescence with capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – capitula. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – stem with cauline leaves. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – stem with cauline leaves. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis – stem with cauline leaves. Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Capitula of Erigeron sumatrensis (left) vs Erigeron canadensis from the same habitat (right). Gorge of "Kochanska" River, 29.08.2021. Photo by Trajche Dimitrovski.
Erigeron canadensis - habit. Gorge of "Kochanska" River, 28.08.2020. Photo by Trajche Dimitrovski.
Erigeron canadensis - upper part of plant with synflorescence (left) and stem with cauline leaves (right). Gorge of "Kochanska" River, 28.08.2020. Photo by Trajche Dimitrovski.
Erigeron canadensis - capitula. Gorge of "Kochanska" River, 28.08.2020. Photo by Trajche Dimitrovski.
Erigeron canadensis - flowering and fruiting capitula. Gorge of "Kochanska" River, 28.08.2020. Photo by Trajche Dimitrovski.
Erigeron canadensis - flowering and fruiting capitula. Gorge of "Kochanska" River, 28.08.2020. Photo by Trajche Dimitrovski.

References:

Erigeron canadensis. Greuter, W. (2006+): Compositae (pro parte majore). – In: Greuter, W. & Raab-Straube, E. von (ed.): Compositae. Euro+Med Plantbase – the information resource for Euro-Mediterranean plant diversity. http://ww2.bgbm.org/EuroPlusMed/PTaxonDetail.asp?NameCache=Erigeron%20canadensis&PTRefFk=7000000 [Accessed 29.11.2021].

Erigeron canadensis L. Plants of the World Online, Royal Botanic Gardens Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:203653-1 [Accessed 30.11.2021].

Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. (1976). Flora Europaea. Volume 4: Plantaginaceae to Compositae (and Rubiaceae). Cambridge: Cambridge University Press.