''Pyrrocoma carthamoides'' is a species of flowering plant in the family
Asteraceae known by the common name largeflower goldenweed.
It is native to western North America from
British Columbia to northeastern
California to
Wyoming, where it is known from grassland, woodlands, forests, barren areas, and other habitat. It is a perennial herb growing from a
taproot and producing one or more stems to about half a meter in maximum length, the stems reddish-green and leafy. The largest leaves are at the base of the stem, measuring up to 20 centimeters long, lance-shaped with spiny sawtoothed edges. Leaves higher on the stem are smaller and hairier. The
inflorescence is a single
flower head or a cluster of up to four. Each bell-shaped head is lined with
phyllaries each up to 2 centimeters long. It has many yellow disc florets surrounded by a fringe of yellow ray florets up to 7 millimeters long; ray florets are occasionally absent. The fruit is an
achene
An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not ope ...
which may be well over a centimeter in length including its
pappus.
There are three varieties of this species; var. ''subsquarrosa'' is an uncommon type known only from southwestern
Montana and northwestern
Wyoming.
References
External links
Jepson Manual Treatment: var. ''cusickii''USDA Plants ProfileFlora of North America
carthamoides
{{Astereae-stub