Cirsium brevifolium

Cirsium brevifolium is a North American species of plants in the tribe Cardueae within the family Asteraceae. Common name is Palouse thistle. The species is native to the northwestern United States, in the States of Washington, Oregon, and Idaho.Biota of North America Program 2014 county distribution map The plant is particularly common in the Palouse Prairie near Pullman, Washington.photo of herbarium specimen at Missouri Botanical Garden, collected near Pullman, Washington, isotype of Cirsium brevifoliumPiper, Charles Vancouver 1906. Contributions from the United States National Herbarium 11: 610–611 as Carduus palousensis Cirsium brevifolium is a perennial herb up to 120 cm (4 feet) tall, with a large taproot. Leaves have spines along the edge. Sometimes there is only one flower head, sometimes a few but not many, with creamy white or pale lavender disc florets but no ray florets.Flora of North America, Palouse thistle, Cirsium brevifolium Nutt.

No narrative description available for this taxon yet.