''Lasthenia glabrata'' is a North American species of flowering plant in the family
Asteraceae
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...
known by the common names yellowray goldfields and yellow-rayed lasthenia.
It is
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
to
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
, where it is a resident of
vernal pools and other moist areas in a number of habitat types. It is widespread across much of the state, from
San Diego County
San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the fi ...
to
Tehama County
Tehama County ( ; Wintun for "high water") is a county located in the northern part of the U.S. state of California. As of the 2020 census, the population was 65,829. The county seat and largest city is Red Bluff.
Tehama County comprises th ...
.
Description
''Lasthenia glabrata'' is an annual herb growing up to tall. The thin stem has a few pairs of oppositely-arranged, smooth-edged linear leaves each up to long.
[Flora of North America, ''Lasthenia glabrata'' Lindley]
/ref>Lindley, John 1835. Edwards's Botanical Register 21: plate 1780 plus subsequent text page
full-page color illustration, diagnosis
Diagnosis is the identification of the nature and cause of a certain phenomenon. Diagnosis is used in many different disciplines, with variations in the use of logic, analytics, and experience, to determine " cause and effect". In systems engin ...
in Latin
Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...
, commentary in English[Rydberg, Per Axel 1913. in Britton, Nathaniel Lord, North American Flora 34: 81]
/ref>
The plant flowers in solitary or loosely clustered flower heads
A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...
with 7-15 yellow ray florets surrounding numerous disc floret
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...
s.[
The fruit is an ]achene
An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not ope ...
a few millimeters long with no pappus.[
;Subspecies][
*''Lasthenia glabrata'' subsp. ''glabrata'' - San Francisco Bay area, Orange County, mid part of Central Valley
*''Lasthenia glabrata'' subsp. ''coulteri'' (A.Gray) Ornduff - southern California, northern Central Valley
]
References
External links
Jepson Manual TreatmentCalphotos Photo gallery, University of California
glabrata
Endemic flora of California
Plants described in 1835
Flora without expected TNC conservation status
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