Brickellia greenei
Encyclopedia
Brickellia greenei is a species of flowering plant in the daisy family
known by the common name Greene's brickellbush. It is native to the mountain ranges of Oregon
and northern California
, including the northern Sierra Nevada.
This is a perennial herb growing 20 to 50 centimeters tall with several glandular, sticky stems covered in leaves. The oval, toothed leaves are up to 3 centimeters long and sticky with resin glands.
The inflorescence
s hold widely-spaced flower heads
, each about 2 centimeters long and lined with narrow, pointed phyllaries
. Each flower head holds a nearly spherical array of about 60 thready disc florets. The fruit is a hairy cylindrical achene
about 7 millimeters long with a pappus
of bristles.
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 Greene's brickellbush. It is native to the mountain ranges of 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...
and 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...
, including the northern Sierra Nevada.
This is a perennial herb growing 20 to 50 centimeters tall with several glandular, sticky stems covered in leaves. The oval, toothed leaves are up to 3 centimeters long and sticky with resin glands.
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...
s hold widely-spaced 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 about 2 centimeters long and lined with narrow, pointed phyllaries
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...
. Each flower head holds a nearly spherical array of about 60 thready disc florets. The fruit is a hairy cylindrical achene
Achene
An achene is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate and indehiscent...
about 7 millimeters long with 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 bristles.