Echium plantagineum plant2 (13919103426)

Autor:

Harry Rose from South West Rocks, Australia

Attribution:

Obraz jest oznaczony jako „Wymagane uznanie autorstwa” (attribution required), ale nie podano żadnych informacji o uznaniu autorstwa. Prawdopodobnie parametr atrybucji został pominięty podczas korzystania z szablonu MediaWiki dla licencji CC-BY. Autorzy mogą znaleźć tutaj przykład prawidłowego korzystania z szablonów.

Credit:

Echium plantagineum plant2

Krótki link:

https://plwiki.pl/b/1099b6

źródło:

Wikimedia Commons

Wymiary:

2592 x 1944 Pixel (2212605 Bytes)

Opis:

Introduced, cool-season, annual or biennial herb; initially forming rosettes, then producing erect flowering stems to 1.2m tall. Rosette leaves are obovate to oblanceolate and densely hairy, with distinct lateral veins. Stem leaves usually have cordate bases. Flowerheads are conical, of many spreading cymes (backward spiraled caterpillar shape). Flowers are zygomorphic, tubular and purplish-blue to purple or pink; 2 stamens are exerted and 3 are not. Flowering is in spring to early summer. Common in grazing land; also along roadsides; more common in poorly managed horse or cattle paddocks. Considered weedy as it has little grazing value & crowds out more productive species. Highly toxic to pigs and horses; only poisonous to sheep after very extended grazing; valued by beekeepers. Best managed using a number of methods (herbicides, grazing, mechanical control). Spray/graze (low rate of herbicide followed by heavy grazing) can be very effective. Spraying once plants are flowering is less effective and will use more herbicide. Biological control options (7 approved) are available; flea beetle, root weevil, crown weevil and pollen beetle are most promising. Repeated slashing may reduce seed set; chipping can be used on small or scattered infestations.

Licencja:

CC BY 2.0

Warunki licencji:

Creative Commons Attribution 2.0