Lasthenia coronaria
Encyclopedia
Lasthenia coronaria is a species of flowering plant in the daisy family
known by the common name royal goldfields. It is native to California
and Baja California
, including Guadalupe Island
. This is an annual herb approaching a maximum height near 40 centimeters. The stem may be branched or not and it bears linear or deeply divided, pointed leaves up to about 6 centimeters long. The leaves, and sometimes the stems, have a coat of glandular hairs. The foliage has a sweet scent. Atop the stems are inflorescence
s of flower heads
with hairy, glandular phyllaries
. The head contains many yellow disc florets with a fringe of small yellow ray florets. The fruit is a hairy achene
up to about 2 millimeters long.
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 royal goldfields. It is native 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...
and Baja California
Baja California
Baja California officially Estado Libre y Soberano de Baja California is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is both the northernmost and westernmost state of Mexico. Before becoming a state in 1953, the area was known as the North...
, including Guadalupe Island
Guadalupe Island
Guadalupe Island, or Isla Guadalupe is a volcanic island located 241 kilometers off the west coast of Mexico's Baja California peninsula and some 400 kilometers southwest of the city of Ensenada in Baja California state, in the Pacific Ocean...
. This is an annual herb approaching a maximum height near 40 centimeters. The stem may be branched or not and it bears linear or deeply divided, pointed leaves up to about 6 centimeters long. The leaves, and sometimes the stems, have a coat of glandular hairs. The foliage has a sweet scent. Atop the stems are 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 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....
with hairy, glandular 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...
. The head contains many yellow disc florets with a fringe of small yellow ray florets. The fruit is a hairy achene
Achene
An achene is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate and indehiscent...
up to about 2 millimeters long.