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Lessingia arachnoidea
Lessingia arachnoidea is a rare species of flowering plant in the family Asteraceae known by the common name Crystal Springs lessingia. It is endemic to the U.S. state of California, where it is known from a few occurrences in the vicinity of Crystal Springs Reservoir on the San Francisco Peninsula and southward to serpentine soil in Woodside. It may also exist in Sonoma County to the north. The plant grows in chaparral, scrub, grasslands and other local plant communities, on serpentine soils.
This is an annual herb producing a slender, erect stem up to 80 centimeters in maximum height. It is woolly toward the ends of the stems, less so toward the base of the plant. The leaves are narrow and sometimes toothed, the lowest approaching 11 centimeters long and the uppermost reduced in size. The inflorescence is made up of a single flower head at the tip of the slender stem.
San Francisco lessingia · Valley lessingia · Woollyhead lessingia · Lemmon's lessingia · Sierra lessingia · Mt. Tamalpais lessingia · Slenderstem lessingia · Sonoma lessingia · Spring lessingia · Wand lessingia · Vinegarweed
Text excerpted from the Wikipedia article Lessingia arachnoidea by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
