Carduus hesperius A.Heller
Carduus hookerianus eriocephalus (A.Gray) A.Nelson
Carduus polyphyllus Rydb.
Carduus scopulorum Greene
Carduus tweedyi Rydb.
Cirsium clokeyi S.F.Blake
Cirsium eriocephalum A.Gray
Cirsium hesperium Rydb.
Cirsium murdockii (S.L.Welsh) Cronquist
Cirsium peckii L.F.Hend.
Cirsium polyphyllum Rydb.
Cirsium scopulorum Cockerell
Cirsium tweedyi Rydb.
Cnicus eatonii A.Gray
Cnicus eriocephalus A.Gray
Cnicus hesperius Eastw.
Common Name: Eaton's Thistle
Cirsium eatonii is a prickly, herbaceous perennial plant growing from a taproot; it produces one to several, fleshy, erect or ascending stems 10 - 150cm tall.
The plant is harvested from the wild for local use as a food, medicine and source of materials.
Western N. America - Oregon, Idaho, Montana, Wyoming, Nevada, Utah, Colorado, New Mexico
Rocky slopes, canyons, pinyon-juniper woodlands to alpine, montane coniferous forests, subalpine forests and, alpine slopes; at elevations from 2,100 - 3,500 metres[
|Other Uses Rating||
|Pollinators||Bees, Flies, Lepidoptera, Beetles, Self
Cirsium species are generally easily grown plants, succeeding in any ordinary garden soil in a sunny position[
Cirsium eatonii is a polymorphic species, generally considered to comprise seven vars, and widely distributed in a high elevation archipelago across the central Rocky Mountains and the Intermountain Region. Several of these vars have at times been considered to be distinct species[
Root - raw or cooked[
]. The root is likely to be rich in inulin, a starch that cannot be digested by humans. This starch thus passes straight through the digestive system and, in some people, ferments to produce flatulence[
]. No more details are given.
The plant has been used to treat wounds, cuts and sores[
The seed of all species of thistles yields a good oil by expression[
]. No details of potential yields etc are given[
Seed - sow early spring or autumn in situ. Germination usually takes place within 2 - 8 weeks at 20°c.