Calycadenia spicata
Encyclopedia
Calycadenia spicata is a species of flowering plant in the daisy family
known by the common name spiked western rosinweed. It is endemic to central California
, where is a common grassland plant in the Central Valley and adjacent Sierra Nevada foothills. This is an annual herb producing a hairy, glandular stem 20 to 60 centimeters tall. The leaves are linear in shape and up to 5 centimeters long, sometimes longest toward the middle of the stem. The inflorescence
bears one or more flower heads
at separate nodes, surrounded by short bract
s tipped with resin glands. The glandular and hairy flower heads have a center of several disc florets as well as whitish, triple-lobed ray florets. The fruit is an achene
; those arising from the disc florets 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 spiked western rosinweed. It is endemic to central 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...
, where is a common grassland plant in the Central Valley and adjacent Sierra Nevada foothills. This is an annual herb producing a hairy, glandular stem 20 to 60 centimeters tall. The leaves are linear in shape and up to 5 centimeters long, sometimes longest toward the middle of the stem. 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 flower heads
Head (botany)
The capitulum is considered the most derived form of inflorescence. Flower heads found outside Asteraceae show lesser degrees of specialization....
at separate nodes, surrounded by short bract
Bract
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis, or cone scale. Bracts are often different from foliage leaves. They may be smaller, larger, or of a different color, shape, or texture...
s tipped with resin glands. The glandular and hairy flower heads have a center of several disc florets as well as whitish, triple-lobed ray florets. 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...
; those arising from the disc florets 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.