Calycadenia fremontii
Encyclopedia
Calycadenia fremontii is a species of flowering plant in the daisy family
known by the common name Frémont's western rosinweed (after John C. Frémont
). It is native to northern California
and Oregon
, where it is a common member of the flora in several types of habitat in the mountains, foothills, and valleys. This annual plant is variable in appearance. It produces a rigid, erect, hairy stem reaching a top height anywhere between 10 centimeters and one meter. The leaves are linear in shape and arranged alternately along the stem, especially on the lower part. The largest is up to 8 centimeters long. The inflorescence
bears one or more glandular flower heads
, each with 2 to 6 three-lobed ray florets in shades of white to red to yellow, and up to 20 disc florets at the center. The fruit is an achene
; achenes from the disc florets may have a pappus
of scales.
Asteraceae
The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies...
known by the common name Frémont's western rosinweed (after John C. Frémont
John C. Frémont
John Charles Frémont , was an American military officer, explorer, and the first candidate of the anti-slavery Republican Party for the office of President of the United States. During the 1840s, that era's penny press accorded Frémont the sobriquet The Pathfinder...
). It is native to northern California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
and Oregon
Oregon
Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
, where it is a common member of the flora in several types of habitat in the mountains, foothills, and valleys. This annual plant is variable in appearance. It produces a rigid, erect, hairy stem reaching a top height anywhere between 10 centimeters and one meter. The leaves are linear in shape and arranged alternately along the stem, especially on the lower part. The largest is up to 8 centimeters long. The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
bears one or more glandular flower heads
Head (botany)
The capitulum is considered the most derived form of inflorescence. Flower heads found outside Asteraceae show lesser degrees of specialization....
, each with 2 to 6 three-lobed ray florets in shades of white to red to yellow, and up to 20 disc florets at the center. The fruit is an achene
Achene
An achene is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate and indehiscent...
; achenes from the disc florets may have a pappus
Pappus (flower structure)
The pappus is the modified calyx, the part of an individual disk, ray or ligule floret surrounding the base of the corolla, in flower heads of the plant family Asteraceae. The pappus may be composed of bristles , awns, scales, or may be absent. In some species, the pappus is too small to see...
of scales.