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Hesperolinon congestum
Also called Marin Western Flax
Hesperolinon congestum, or Marin dwarf flax, is an annual herb, which is known to occur only in San Mateo, San Francisco and Marin County, California, United States. This plant occurs chiefly on serpentine soils, especially in dry native bunch grasses, chaparral or other grasslands at elevations less than 200 meters. The flowers are congested at the tips of the dichotomously branching stems. H. congestum is in flower between April and July. The outlook for this plant depends on survival of only about twenty small colonies, most of which are not actively managed for protection, even though the species is federally and state-listed as threatened. This species is also less commonly known as Marin western flax.
Collection and recognition of the species was made in the late 19th and early 20th centuries by botanical pioneers W.L. Jepson, Alice Eastwood and Katharine Brandegee. Most of these early sightings were made in Tiburon and San Francisco. In the mid-1900s recording arose in San Mateo County, principally in Redwood City (Edgewood Park) and in San Mateo
Glandular dwarf-flax · Brewer's dwarf-flax · California dwarf-flax · Coast Range dwarf-flax · Drymary dwarf-flax · Smallflower dwarf-flax · Napa dwarf-flax · Paskenta Grade dwarf-flax · Dwarf-flax
Text excerpted from the Wikipedia article Hesperolinon congestum by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
