Summary ²

Cirsium brevistylum is a species of thistle known by the common names Indian thistle and clustered thistle. It is native to western North America from southwestern British Columbia to California, where it grows in moist areas in many types of habitat, from mountain forests to chaparral and coastal marshes. This native thistle is annual or biennial, reaching two meters in height and known to exceed three meters at times. There is usually a single stem which...

Sources and Credits

1. (c) Matt Lavin, some rights reserved (CC BY-SA), http://www.flickr.com/photos/35478170@N08/5975948274
2. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Cirsium_brevistylum

More Info

• iNaturalist.ca taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• NatureServe Explorer 2.0
• OregonFlora.org
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online

iNaturalist.ca Map