Lasthenia glabrata explained

Lasthenia glabrata is a North American species of flowering plant in the family Asteraceae known by the common names yellowray goldfields and yellow-rayed lasthenia. It is endemic to California, 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 to Tehama County.^[1]

Description

Lasthenia glabrata is an annual herb growing up to 50round=0.5NaNround=0.5 tall. The thin stem has a few pairs of oppositely-arranged, smooth-edged linear leaves each up to 15abbr=offNaNabbr=off long.^{[2] [3] [4]}

The plant flowers in solitary or loosely clustered flower heads with 7-15 yellow ray florets surrounding numerous disc florets.^[2]

The fruit is an achene a few millimeters long with no pappus.^[2]

Subspecies^[2]

• 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

External links

• Jepson Manual Treatment
• Calphotos Photo gallery, University of California

Notes and References

1. http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Lasthenia+glabrata Calflora taxon report, University of California, Lasthenia glabrata Lindley, Yellow rayed Lasthenia, yellow rayed goldfields, yellowray goldfields
2. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067051 Flora of North America, Lasthenia glabrata Lindley
3. https://www.biodiversitylibrary.org/page/239977#page/121/mode/1up Lindley, John 1835. Edwards's Botanical Register 21: plate 1780 plus subsequent text page
4. https://www.biodiversitylibrary.org/page/28762240#page/9/mode/1up Rydberg, Per Axel 1913. in Britton, Nathaniel Lord, North American Flora 34: 81