| 词条 | Cirsium edule |
| 释义 |
| image = Cirsium_edule_7396.jpg | genus = Cirsium | species = edule | authority = Nutt. | synonyms_ref = [1] | synonyms =
}}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]Cirsium edule is a tall herbaceous perennial plant, reaching {{convert|1|–|2|m|in|abbr=on}} in height. The leaves are very spiny, lobed, 10–30 cm long and 2–5 cm broad (smaller on the upper part of the flower stem). The inflorescence is 3–4 cm diameter, purple, with numerous disc florets but no ray florets. The achenes are 4–5 mm long, with a downy pappus which assists in wind dispersal. It is monocarpic, growing as a low rosette of leaves for a number of years, then sending up the tall flowering stem in spring, with the plant dying after seed maturation.[5] Edible thistle is used by Native Americans for its edible roots and young shoots. The roots are sweet, but contain inulin, which gives some people digestive problems.[6]
References1. ^1 The Plant List, Cirsium edule Nutt. 2. ^{{PLANTS|id=CIED|taxon=Cirsium edule|accessdate=17 January 2016}} 3. ^{{cite web|title=BSBI List 2007 |publisher=Botanical Society of Britain and Ireland |url=http://www.bsbi.org.uk/BSBIList2007.xls |format=xls |archive-url=https://www.webcitation.org/6VqJ46atN?url=http://www.bsbi.org.uk/BSBIList2007.xls |archive-date=2015-01-25 |accessdate=2014-10-17 |deadurl=yes |df= }} 4. ^Biota of North America Program 2014 state-level distribution map 5. ^1 Flora of North America, Edible thistle, cardon, Cirsium edule Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 420. 1841. 6. ^Plants for a Future: Cirsium edule 7. ^[https://www.biodiversitylibrary.org/page/9310433#page/221/mode/1up Keil, David John 2004. Sida 21(1): 213] External links
4 : Cirsium|Flora of North America|Edible plants|Plants described in 1841 |
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