Eryngium pinnatisectum

Imperiled  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Apiales
Family: Apiaceae
Genus: Eryngium
Species:
E. pinnatisectum
Binomial name
Eryngium pinnatisectum

Eryngium pinnatisectum is an uncommon species of flowering plant in the family Apiaceae, known by the common names Tuolumne eryngo and Tuolumne button celery.[2]

Distribution

The annual or perennial herb is endemic to central California, within areas of Sacramento County, Amador County, Calaveras County, and Tuolumne County.[3]

It is known from the eastern Central Valley, and adjacent lower Sierra Nevada foothills.[2]

It is a plant of wetlands, in vernal pools, foothill oak woodland (Cismontane woodland), yellow pine forest (Lower montane coniferous forest), freshwater wetlands, and wetland-riparian habitats.[2]

Description

Eryngium pinnatisectum is an erect perennial herb growing up to 0.5 metres (1.6 ft) tall. It has a thick, hairless pale green branching stem.[4]

The greenish-white leaves are long and very narrow, lance-shaped with several sharp lobes, reaching 30 centimeters long.[4]

The inflorescence is an array of spherical flower heads, each surrounded by sharp-pointed, narrow bracts with thickened edges. The pale greenish flowers in the globelike head bloom in white petals.[4] The blooming period is May to August.

Conservation

The plant is a California Native Plant Society listed Endangered species.[3]

References

  1. ↑ "NatureServe Explorer 2.0".
  2. 1 2 3 Calflora
  3. 1 2 California Native Plant Society, Inventory of Rare and Endangered Plants (online edition, v8-02): Eryngium pinnatisectum . accessed 20 February 2017.
  4. 1 2 3 Jepson eFlora


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