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Delta Button-celery
Eryngium racemosum
  
About Delta Button-celery (Eryngium racemosum) 0 Nurseries Carry This Plant Eryngium racemosum is a rare species of flowering plant in the carrot family known by the common name delta eryngo, or delta button celery. It is endemic to California, where it is known from the Sacramento-San Joaquin River Delta region of the Central Valley up to the rise of the Sierra Nevada foothills. It is a plant of vernally wet and flooded areas near the waterways of the valley, habitat which has been altered and in some areas eliminated by human activity. It is also a member of the flora in the rare alkali sink habitat of the delta. The plant has no federal listing but it is listed as an endangered species on the California state level. It is endemic to California, where it is known from the Sacramento-San Joaquin River Delta region of the Central Valley up to the rise of the Sierra Nevada foothills. It is a plant of vernally wet and flooded areas near the waterways of the valley, habitat which has been altered and in some areas eliminated by human activity. It is also a member of the flora in the rare alkali sink habitat of the delta. The plant has no federal listing but it is listed as an endangered species on the California state level. There are 26 reported occurrences of the plant, but several of these have been extirpated. Threats to the species include habitat destruction via alteration of water regimes and water diversion, changes to waterways by dredging and other maintenance activities, conversion of land to agriculture, and non-native plant species. The plant relies on the seasonal flooding that would occur naturally in the delta; this flooding is strictly contained and prevented today. Eryngium racemosum is a mostly prostrate perennial herb with a slender, branching stem spreading to a maximum length near half a meter. The stem may root at nodes that come in contact with moist soil. The serrated or lobed leaves have blades a few centimeters long and are borne on longer petioles. The inflorescence is a raceme of rounded or oval flower heads, each surrounded by five long, narrow, spiny bracts. The flowers in the head bloom in white or purple-tinged petals in June through September.
Plant Description
Plant Type
Plant Type
Annual Herb, Perennial Herb

Flower Color
Flower Color
White, Purple

Wildlife Supported
 


 
Butterflies & moths hosted ( 1 likely * ) SHOW ALL
*
Agonopterix oregonensis Image
Agonopterix oregonensisAgonopterix oregonensis

Landscaping Information
Natural Setting
Climate
Climate
Annual Precipitation: 9.7" - 54.1", Summer Precipitation: 0.23" - 1.31", Coldest Month: 39.5" - 49.2", Hottest Month: 67.2" - 76.0", Humidity: 0.46" - 22.47", Elevation: 7" - 4150"

Alternative Names
Common Names: Delta Button Celery, Delta Eryngo


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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