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A number of other names are used in other areas or have been used in the past, including: Canadian thistle, lettuce from hell thistle, California thistle, [10] corn thistle, cursed thistle, field thistle, green thistle, hard thistle, perennial thistle, prickly thistle, setose thistle, small-flowered thistle, way thistle, and stinger-needles ...
Cirsium edule, the edible thistle [2] or Indian thistle, [3] is a species of thistle in the genus Cirsium, native to western North America from southeastern Alaska south through British Columbia to Washington and Oregon, and locally inland to Idaho. [4] It is a larval host to the mylitta crescent and the painted lady. [5]
Cirsium edule Nutt. – edible thistle; Cirsium engelmannii Rydb. – Engelmann thistle, Engelmann's thistle; Cirsium erisithales (Jacq.) Scop. – yellow melancholy thistle; Cirsium esculentum (Siev.) C.A.Mey. Cirsium flodmanii Arthur – Flodman thistle, Flodman's thistle; Cirsium foliosum DC. – Drummond's thistle, elk thistle, leafy ...
Cirsium brevistylum — shortstyle thistle; Cirsium canescens — prairie thistle; Cirsium discolor — field thistle; Cirsium drummondii — Drummond's thistle; Cirsium edule — edible thistle; Cirsium flodmanii — Flodman's thistle; Cirsium foliosum — leafy thistle; Cirsium hillii — Hill's thistle; Cirsium hookerianum — Hooker's thistle
Carduus nutans is a monocarpic herb and is classified as a biennial thistle, though it can have varying phenology depending on climate and habitat. [5] Mature plants can reach 2.7 m (9 ft) in height with multi-branched stems. The leaves are prickly and jagged and can reach up to 40 cm (1.3 ft) in length. [6]
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 spikes on the margins, mostly in the family Asteraceae. Prickles can also occur all ...
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Carduus is a genus of flowering plants in the family Asteraceae, and the tribe Cardueae, one of two genera considered to be true thistles, the other being Cirsium. [2] Plants of the genus are known commonly as plumeless thistles.