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Cirsium horridulum is a biennial herb up to 250 centimetres (100 in) tall, with a large taproot and fleshy side roots that sometimes sprout new shoots. Leaves are up to 40 centimetres (16 in) long with thick, sharp spines along the edges.
The following species in the flowering plant genus Cirsium, the plume thistles, are accepted by Plants of the World Online. [1] A 2022 molecular study reassigned many species to other genera, but Cirsium remains a speciose genus. [ 2 ]
Cirsium is a genus of perennial and biennial flowering plants in the Asteraceae, ... Cirsium horridulum Michx. – yellow thistle; Cirsium hydrophilum Boiss.
Cirsium horridulum, native to the United States Index of plants with the same common name This page is an index of articles on plant species (or higher taxonomic groups) with the same common name ( vernacular name).
Milk thistle flowerhead Cirsium arizonicum, showing arachnoid cobwebbiness on stems and leaves, with ants attending aphids that might be taking advantage of the shelter. Thistle is the common name of a group of flowering plants characterized by leaves with sharp prickles on the margins, mostly in the family Asteraceae. Prickles can also occur ...
Pages in category "Cirsium" The following 92 pages are in this category, out of 92 total. ... Cirsium hookerianum; Cirsium horridulum; Cirsium hosokawai;
Cirsium horridulum (Yellow thistle, E) Doellingeria infirma (Appalachian white-aster, SCE) Eupatorium album (White thoroughwort, E) Eurybia radula (Rough aster, E) Eurybia spectabilis (Showy aster, T) Gamochaeta purpurea (Purple cudweed, SCE) Krigia biflora (Two-flowered cynthia, T) Liatris novae-angliae (New England blazing-star, SC)
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