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Chaparral Ragwort
Senecio aphanactis
About Chaparral Ragwort (Senecio aphanactis) 0 Nurseries Carry This Plant Senecio aphanactis is a species of flowering plant in the aster family known by the common names chaparral ragwort, rayless ragwort, and California groundsel. It is native to California as far north as the San Francisco Bay Area and south into Baja California. It occurs in dry coastal areas, particularly alkali flats. It is an annual herb generally growing 10 to 20 centimeters high from a small taproot. The plant is mostly hairless, but the upper parts, such as the inflorescence, may have woolly hairs. The leaves are linear or lance-shaped, usually with lobed edges, and measure 2 to 4 centimeters long. They sometimes clasp the stem at the bases. The flower head is urn-shaped and covered in phyllaries. The head opens slightly at the top, revealing many yellow disc florets and sometimes one or more tiny yellow ray florets, although these may be absent. The fruit is a long, thin achene coated in ashy gray hairs and tipped with a pappus of long, white bristles.
Plant Description
Plant Type
Plant Type
Annual Herb

4 - 7.9 in tall

Flower Color
Flower Color

Wildlife Supported

Landscaping Information
Natural Setting
Annual Precipitation: 9.0" - 30.9", Summer Precipitation: 0.14" - 0.64", Coldest Month: 41.6" - 55.6", Hottest Month: 62.9" - 79.6", Humidity: 0.92" - 27.32", Elevation: 7" - 2319"

Alternative Names
Common Names: California Groundsel, Rayless Ragwort

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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