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Lyon's Pentachaeta
Pentachaeta lyonii
About Lyon's Pentachaeta (Pentachaeta lyonii) 0 Nurseries Carry This Plant Pentachaeta lyonii, the Lyon's pentachaeta or Lyon's pygmydaisy, is an annual plant in the aster family. It is endemic to southern California, where it is now known only from a few areas on the heavily developed coastline of Los Angeles and Ventura Counties. This is a federally listed endangered species. At one point in time there were 43 populations of P. lyonii distributed among the Santa Monica Mountains, Simi Valley, Palos Verdes Peninsula and Catalina Island. In a 2006 search only 21 Pentacheata populations could be located, with occurrences on the Palos Verdes Peninsula and Santa Catalina Island having long been deemed extirpated. The most recent area suspected of extirpation is Stunt Ranch where no flowering individuals have been seen since 1990, after an 8 year population decline.
Plant Description
Plant Type
Plant Type
Annual herb

Landscaping Information
Natural Setting
Annual Precipitation: 12.5" - 25.6", Summer Precipitation: 0.14" - 1.40", Coldest Month: 46.0" - 56.9", Hottest Month: 69.7" - 79.5", Humidity: 2.14" - 20.22", Elevation: 33" - 1819"

Alternative Names
Common Names: Lyon's Pygmydaisy

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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