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Separate cypselae. Onopordum acanthium (cotton thistle, Scotch (or Scottish) thistle) is a flowering plant in the family Asteraceae.It is native to Europe and Western Asia from the Iberian Peninsula east to Kazakhstan, and north to central Scandinavia, and widely naturalised elsewhere, [1] [2] [3] with especially large populations present in the United States and Australia.
Some species of Onopordum have been introduced as ornamental plants in the temperate regions of North America and Australia, where they have become naturalised in the wild.. In most of these countries, these thistles are considered noxious weeds, especially in Australia where a biological control program has been set up (using the Rosette Crown Weevil, Trichosirocalus briesei).
Fast grow times: “Because you're growing indoors at an ideal temperature, plants thrive and grow quickly,” says Marcus. “Once they mature, you can have a continual harvest for crisp ...
Onopordum acanthium: Cotton thistle Silybum marianum: Blessed milk thistle * Serratula tinctoria: Saw-wort Acroptilon repens: Russian knapweed * Centaurea scabiosa: Greater knapweed Centaurea montana: Perennial cornflower * Centaurea cyanus: Cornflower * Centaurea calcitrapa: Red star-thistle * Centaurea aspera: Rough star-thistle * Centaurea ...
Onopordum acanthium†‡ [2] – cotton thistle, Scotch thistle, Scottish thistle; Packera castoreus – Beaver Mountain groundsel, Beaver Mountain ragwort; Packera malmstenii – Podunk ragwort; Packera musiniensis – Musinea ragwort, Musinea groundsel; Peucephyllum schottii – pygmy cedar, Schott's pygmy cedar, desert fir, desert pine
In addition to growth by cell division, a plant may grow through cell elongation. This occurs when individual cells or groups of cells grow longer. Not all plant cells grow to the same length. When cells on one side of a stem grow longer and faster than cells on the other side, the stem bends to the side of the slower growing cells as a result.
It easily becomes a noxious weed, similar to its relative, Onopordum acanthium. This is a biennial herb producing a sticky, glandular, very spiny stem up to 2 meters tall. The spiny, bright light green leaves are up to 25 centimeters long and are divided into triangular lobes.
Onopordum acanthium; I. Onopordum illyricum; N. Onopordum nervosum; T. Onopordum tauricum This page was last edited on 11 May 2023, at 16:16 (UTC). Text is ...