Erigeron biolettii
Encyclopedia
Erigeron biolettii is a species of flowering plant in the aster family
known by the common names streamside daisy and Bioletti's fleabane. It was named for University of California
Professor of Viticulture
and Enology
Frederick Bioletti when he was an undergraduate. It is endemic to California
, where it is known only from the North Coast Ranges in and around Sonoma County
. This is a perennial herb producing a branching erect stem 30 to 90 centimeters tall. It is hairy and very glandular. The narrow leaves are 2 to 4 centimeters long, equal in size and evenly spaced along the stem. The inflorescence
is a wide array of flower heads
at the tips of stem branches, each just over a centimeter wide. The head is lined with layers of densely glandular purple-tipped phyllaries
and contains many yellow disc florets and no ray florets. The fruit is an achene
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 names streamside daisy and Bioletti's fleabane. It was named for University of California
University of California, Berkeley
The University of California, Berkeley , is a teaching and research university established in 1868 and located in Berkeley, California, USA...
Professor of Viticulture
Viticulture
Viticulture is the science, production and study of grapes which deals with the series of events that occur in the vineyard. When the grapes are used for winemaking, it is also known as viniculture...
and Enology
Oenology
Oenology,[p] œnology , or enology is the science and study of all aspects of wine and winemaking except vine-growing and grape-harvesting, which is a subfield called viticulture. “Viticulture & oenology” is a common designation for training programmes and research centres that include both the...
Frederick Bioletti when he was an undergraduate. It is endemic to 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 it is known only from the North Coast Ranges in and around Sonoma County
Sonoma County, California
Sonoma County, located on the northern coast of the U.S. state of California, is the largest and northernmost of the nine San Francisco Bay Area counties. Its population at the 2010 census was 483,878. Its largest city and county seat is Santa Rosa....
. This is a perennial herb producing a branching erect stem 30 to 90 centimeters tall. It is hairy and very glandular. The narrow leaves are 2 to 4 centimeters long, equal in size and evenly spaced along 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...
is a wide array of 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 the tips of stem branches, each just over a centimeter wide. The head is lined with layers of densely glandular purple-tipped 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...
and contains many yellow disc florets and no 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...
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.