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
- ^ "NatureServe Explorer 2.0".
- ^ a b c Calflora
- ^ a b California Native Plant Society, Inventory of Rare and Endangered Plants (online edition, v8-02): Eryngium pinnatisectum . accessed 20 February 2017.
- ^ a b c Jepson eFlora
External links
- Calflora Database: Eryngium pinnatisectum (Tuolumne button celery, Tuolumne eryngo)
- Jepson eFlora (TJM2) treatment of Eryngium pinnatisectum
- USDA Plants Profile for Eryngium pinnatisectum (Tuolumne eryngo)
- UC CalPhotos gallery of Eryngium pinnatisectum
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